Merge branch 'master' into for-2.6.34

author: Jens Axboe <jens.axboe@oracle.com> 2010-02-22 07:48:51 -0500
committer: Jens Axboe <jens.axboe@oracle.com> 2010-02-22 07:48:51 -0500
commit: f11cbd74c5ff3614f6390b4de67a6ffdc614c378 (patch)
tree: 6a30920ade9eeaac5bf6d6263b5d09712e882eb0 /fs
parent: 429c42c9d246f5bda868495c09974312a0177328 (diff)
parent: aea187c46f7d03ce985e55eb1398d0776a15b928 (diff)
158 files changed, 2478 insertions, 1781 deletions
diff --git a/fs/9p/v9fs.c b/fs/9p/v9fs.c
index cf62b05e296a..7d6c2139891d 100644
--- a/fs/9p/v9fs.c
+++ b/fs/9p/v9fs.c
@@ -84,7 +84,7 @@ static const match_table_t tokens = {
 static int v9fs_parse_options(struct v9fs_session_info *v9ses, char *opts)
 {
-        char *options;
+        char *options, *tmp_options;
        substring_t args[MAX_OPT_ARGS];
        char *p;
        int option = 0;
@@ -102,9 +102,12 @@ static int v9fs_parse_options(struct v9fs_session_info *v9ses, char *opts)
        if (!opts)
                return 0;
-        options = kstrdup(opts, GFP_KERNEL);
+        tmp_options = kstrdup(opts, GFP_KERNEL);
-        if (!options)
+        if (!tmp_options) {
+                ret = -ENOMEM;
                goto fail_option_alloc;
+        }
+        options = tmp_options;
        while ((p = strsep(&options, ",")) != NULL) {
                int token;
@@ -159,8 +162,12 @@ static int v9fs_parse_options(struct v9fs_session_info *v9ses, char *opts)
                        break;
                case Opt_cache:
                        s = match_strdup(&args[0]);
-                        if (!s)
+                        if (!s) {
-                                goto fail_option_alloc;
+                                ret = -ENOMEM;
+                                P9_DPRINTK(P9_DEBUG_ERROR,
+                                  "problem allocating copy of cache arg\n");
+                                goto free_and_return;
+                        }
                        if (strcmp(s, "loose") == 0)
                                v9ses->cache = CACHE_LOOSE;
@@ -173,8 +180,12 @@ static int v9fs_parse_options(struct v9fs_session_info *v9ses, char *opts)
                case Opt_access:
                        s = match_strdup(&args[0]);
-                        if (!s)
+                        if (!s) {
-                                goto fail_option_alloc;
+                                ret = -ENOMEM;
+                                P9_DPRINTK(P9_DEBUG_ERROR,
+                                  "problem allocating copy of access arg\n");
+                                goto free_and_return;
+                        }
                        v9ses->flags &= ~V9FS_ACCESS_MASK;
                        if (strcmp(s, "user") == 0)
@@ -194,13 +205,11 @@ static int v9fs_parse_options(struct v9fs_session_info *v9ses, char *opts)
                        continue;
                }
        }
-        kfree(options);
-        return ret;
+free_and_return:
+        kfree(tmp_options);
 fail_option_alloc:
-        P9_DPRINTK(P9_DEBUG_ERROR,
+        return ret;
-                   "failed to allocate copy of option argument\n");
-        return -ENOMEM;
 }
 /**
diff --git a/fs/9p/v9fs_vfs.h b/fs/9p/v9fs_vfs.h
index 3a7560e35865..ed835836e0dc 100644
--- a/fs/9p/v9fs_vfs.h
+++ b/fs/9p/v9fs_vfs.h
@@ -60,3 +60,4 @@ void v9fs_dentry_release(struct dentry *);
 int v9fs_uflags2omode(int uflags, int extended);
 ssize_t v9fs_file_readn(struct file *, char *, char __user *, u32, u64);
+void v9fs_blank_wstat(struct p9_wstat *wstat);
diff --git a/fs/9p/vfs_file.c b/fs/9p/vfs_file.c
index 3902bf43a088..74a0461a9ac0 100644
--- a/fs/9p/vfs_file.c
+++ b/fs/9p/vfs_file.c
@@ -257,6 +257,23 @@ v9fs_file_write(struct file *filp, const char __user * data,
        return total;
 }
+static int v9fs_file_fsync(struct file *filp, struct dentry *dentry,
+                                        int datasync)
+{
+        struct p9_fid *fid;
+        struct p9_wstat wstat;
+        int retval;
+        P9_DPRINTK(P9_DEBUG_VFS, "filp %p dentry %p datasync %x\n", filp,
+                                                dentry, datasync);
+        fid = filp->private_data;
+        v9fs_blank_wstat(&wstat);
+        retval = p9_client_wstat(fid, &wstat);
+        return retval;
+}
 static const struct file_operations v9fs_cached_file_operations = {
        .llseek = generic_file_llseek,
        .read = do_sync_read,
@@ -266,6 +283,7 @@ static const struct file_operations v9fs_cached_file_operations = {
        .release = v9fs_dir_release,
        .lock = v9fs_file_lock,
        .mmap = generic_file_readonly_mmap,
+        .fsync = v9fs_file_fsync,
 };
 const struct file_operations v9fs_file_operations = {
@@ -276,4 +294,5 @@ const struct file_operations v9fs_file_operations = {
        .release = v9fs_dir_release,
        .lock = v9fs_file_lock,
        .mmap = generic_file_readonly_mmap,
+        .fsync = v9fs_file_fsync,
 };
diff --git a/fs/9p/vfs_inode.c b/fs/9p/vfs_inode.c
index 18f74ec4dce9..a407fa3388c0 100644
--- a/fs/9p/vfs_inode.c
+++ b/fs/9p/vfs_inode.c
@@ -176,7 +176,7 @@ int v9fs_uflags2omode(int uflags, int extended)
 *
 */
-static void
+void
 v9fs_blank_wstat(struct p9_wstat *wstat)
 {
        wstat->type = ~0;
@@ -1001,44 +1001,6 @@ done:
 }
 /**
- * v9fs_vfs_readlink - read a symlink's location
- * @dentry: dentry for symlink
- * @buffer: buffer to load symlink location into
- * @buflen: length of buffer
- *
- */
-static int v9fs_vfs_readlink(struct dentry *dentry, char __user * buffer,
-                             int buflen)
-{
-        int retval;
-        int ret;
-        char *link = __getname();
-        if (unlikely(!link))
-                return -ENOMEM;
-        if (buflen > PATH_MAX)
-                buflen = PATH_MAX;
-        P9_DPRINTK(P9_DEBUG_VFS, " dentry: %s (%p)\n", dentry->d_name.name,
-                                                                        dentry);
-        retval = v9fs_readlink(dentry, link, buflen);
-        if (retval > 0) {
-                if ((ret = copy_to_user(buffer, link, retval)) != 0) {
-                        P9_DPRINTK(P9_DEBUG_ERROR,
-                                        "problem copying to user: %d\n", ret);
-                        retval = ret;
-                }
-        }
-        __putname(link);
-        return retval;
-}
-/**
 * v9fs_vfs_follow_link - follow a symlink path
 * @dentry: dentry for symlink
 * @nd: nameidata
@@ -1230,7 +1192,6 @@ static const struct inode_operations v9fs_dir_inode_operations_ext = {
        .rmdir = v9fs_vfs_rmdir,
        .mknod = v9fs_vfs_mknod,
        .rename = v9fs_vfs_rename,
-        .readlink = v9fs_vfs_readlink,
        .getattr = v9fs_vfs_getattr,
        .setattr = v9fs_vfs_setattr,
 };
@@ -1253,7 +1214,7 @@ static const struct inode_operations v9fs_file_inode_operations = {
 };
 static const struct inode_operations v9fs_symlink_inode_operations = {
-        .readlink = v9fs_vfs_readlink,
+        .readlink = generic_readlink,
        .follow_link = v9fs_vfs_follow_link,
        .put_link = v9fs_vfs_put_link,
        .getattr = v9fs_vfs_getattr,
diff --git a/fs/9p/vfs_super.c b/fs/9p/vfs_super.c
index 14a86448572c..69357c0d9899 100644
--- a/fs/9p/vfs_super.c
+++ b/fs/9p/vfs_super.c
@@ -188,7 +188,8 @@ static void v9fs_kill_super(struct super_block *s)
        P9_DPRINTK(P9_DEBUG_VFS, " %p\n", s);
-        v9fs_dentry_release(s->s_root); /* clunk root */
+        if (s->s_root)
+                v9fs_dentry_release(s->s_root); /* clunk root */
        kill_anon_super(s);
diff --git a/fs/affs/affs.h b/fs/affs/affs.h
index e511dc621a2e..0e40caaba456 100644
--- a/fs/affs/affs.h
+++ b/fs/affs/affs.h
@@ -106,8 +106,8 @@ struct affs_sb_info {
        u32 s_last_bmap;
        struct buffer_head *s_bmap_bh;
        char *s_prefix;                 /* Prefix for volumes and assigns. */
-        int s_prefix_len;               /* Length of prefix. */
        char s_volume[32];              /* Volume prefix for absolute symlinks. */
+        spinlock_t symlink_lock;        /* protects the previous two */
 };
 #define SF_INTL         0x0001          /* International filesystem. */
diff --git a/fs/affs/namei.c b/fs/affs/namei.c
index 960d336ec694..d70bbbac6b7b 100644
--- a/fs/affs/namei.c
+++ b/fs/affs/namei.c
@@ -341,10 +341,13 @@ affs_symlink(struct inode *dir, struct dentry *dentry, const char *symname)
        p  = (char *)AFFS_HEAD(bh)->table;
        lc = '/';
        if (*symname == '/') {
+                struct affs_sb_info *sbi = AFFS_SB(sb);
                while (*symname == '/')
                        symname++;
-                while (AFFS_SB(sb)->s_volume[i])        /* Cannot overflow */
+                spin_lock(&sbi->symlink_lock);
-                        *p++ = AFFS_SB(sb)->s_volume[i++];
+                while (sbi->s_volume[i])        /* Cannot overflow */
+                        *p++ = sbi->s_volume[i++];
+                spin_unlock(&sbi->symlink_lock);
        }
        while (i < maxlen && (c = *symname++)) {
                if (c == '.' && lc == '/' && *symname == '.' && symname[1] == '/') {
diff --git a/fs/affs/super.c b/fs/affs/super.c
index 104fdcb3a7fc..d41e9673cd97 100644
--- a/fs/affs/super.c
+++ b/fs/affs/super.c
@@ -203,7 +203,7 @@ parse_options(char *options, uid_t *uid, gid_t *gid, int *mode, int *reserved, s
                switch (token) {
                case Opt_bs:
                        if (match_int(&args[0], &n))
-                                return -EINVAL;
+                                return 0;
                        if (n != 512 && n != 1024 && n != 2048
                            && n != 4096) {
                                printk ("AFFS: Invalid blocksize (512, 1024, 2048, 4096 allowed)\n");
@@ -213,7 +213,7 @@ parse_options(char *options, uid_t *uid, gid_t *gid, int *mode, int *reserved, s
                        break;
                case Opt_mode:
                        if (match_octal(&args[0], &option))
-                                return 1;
+                                return 0;
                        *mode = option & 0777;
                        *mount_opts |= SF_SETMODE;
                        break;
@@ -221,8 +221,6 @@ parse_options(char *options, uid_t *uid, gid_t *gid, int *mode, int *reserved, s
                        *mount_opts |= SF_MUFS;
                        break;
                case Opt_prefix:
-                        /* Free any previous prefix */
-                        kfree(*prefix);
                        *prefix = match_strdup(&args[0]);
                        if (!*prefix)
                                return 0;
@@ -233,21 +231,21 @@ parse_options(char *options, uid_t *uid, gid_t *gid, int *mode, int *reserved, s
                        break;
                case Opt_reserved:
                        if (match_int(&args[0], reserved))
-                                return 1;
+                                return 0;
                        break;
                case Opt_root:
                        if (match_int(&args[0], root))
-                                return 1;
+                                return 0;
                        break;
                case Opt_setgid:
                        if (match_int(&args[0], &option))
-                                return 1;
+                                return 0;
                        *gid = option;
                        *mount_opts |= SF_SETGID;
                        break;
                case Opt_setuid:
                        if (match_int(&args[0], &option))
-                                return -EINVAL;
+                                return 0;
                        *uid = option;
                        *mount_opts |= SF_SETUID;
                        break;
@@ -311,11 +309,14 @@ static int affs_fill_super(struct super_block *sb, void *data, int silent)
                return -ENOMEM;
        sb->s_fs_info = sbi;
        mutex_init(&sbi->s_bmlock);
+        spin_lock_init(&sbi->symlink_lock);
        if (!parse_options(data,&uid,&gid,&i,&reserved,&root_block,
                                &blocksize,&sbi->s_prefix,
                                sbi->s_volume, &mount_flags)) {
                printk(KERN_ERR "AFFS: Error parsing options\n");
+                kfree(sbi->s_prefix);
+                kfree(sbi);
                return -EINVAL;
        }
        /* N.B. after this point s_prefix must be released */
@@ -516,14 +517,18 @@ affs_remount(struct super_block *sb, int *flags, char *data)
        unsigned long            mount_flags;
        int                      res = 0;
        char                    *new_opts = kstrdup(data, GFP_KERNEL);
+        char                     volume[32];
+        char                    *prefix = NULL;
        pr_debug("AFFS: remount(flags=0x%x,opts=\"%s\")\n",*flags,data);
        *flags |= MS_NODIRATIME;
+        memcpy(volume, sbi->s_volume, 32);
        if (!parse_options(data, &uid, &gid, &mode, &reserved, &root_block,
-                           &blocksize, &sbi->s_prefix, sbi->s_volume,
+                           &blocksize, &prefix, volume,
                           &mount_flags)) {
+                kfree(prefix);
                kfree(new_opts);
                return -EINVAL;
        }
@@ -534,6 +539,14 @@ affs_remount(struct super_block *sb, int *flags, char *data)
        sbi->s_mode  = mode;
        sbi->s_uid   = uid;
        sbi->s_gid   = gid;
+        /* protect against readers */
+        spin_lock(&sbi->symlink_lock);
+        if (prefix) {
+                kfree(sbi->s_prefix);
+                sbi->s_prefix = prefix;
+        }
+        memcpy(sbi->s_volume, volume, 32);
+        spin_unlock(&sbi->symlink_lock);
        if ((*flags & MS_RDONLY) == (sb->s_flags & MS_RDONLY)) {
                unlock_kernel();
diff --git a/fs/affs/symlink.c b/fs/affs/symlink.c
index 41782539c907..ee00f08c4f53 100644
--- a/fs/affs/symlink.c
+++ b/fs/affs/symlink.c
@@ -20,7 +20,6 @@ static int affs_symlink_readpage(struct file *file, struct page *page)
        int                      i, j;
        char                     c;
        char                     lc;
-        char                    *pf;
        pr_debug("AFFS: follow_link(ino=%lu)\n",inode->i_ino);
@@ -32,11 +31,15 @@ static int affs_symlink_readpage(struct file *file, struct page *page)
        j  = 0;
        lf = (struct slink_front *)bh->b_data;
        lc = 0;
-        pf = AFFS_SB(inode->i_sb)->s_prefix ? AFFS_SB(inode->i_sb)->s_prefix : "/";
        if (strchr(lf->symname,':')) {  /* Handle assign or volume name */
+                struct affs_sb_info *sbi = AFFS_SB(inode->i_sb);
+                char *pf;
+                spin_lock(&sbi->symlink_lock);
+                pf = sbi->s_prefix ? sbi->s_prefix : "/";
                while (i < 1023 && (c = pf[i]))
                        link[i++] = c;
+                spin_unlock(&sbi->symlink_lock);
                while (i < 1023 && lf->symname[j] != ':')
                        link[i++] = lf->symname[j++];
                if (i < 1023)
diff --git a/fs/befs/linuxvfs.c b/fs/befs/linuxvfs.c
index 33baf27fac78..34ddda888e63 100644
--- a/fs/befs/linuxvfs.c
+++ b/fs/befs/linuxvfs.c
@@ -873,6 +873,7 @@ befs_fill_super(struct super_block *sb, void *data, int silent)
        brelse(bh);
      unacquire_priv_sbp:
+        kfree(befs_sb->mount_opts.iocharset);
        kfree(sb->s_fs_info);
      unacquire_none:
diff --git a/fs/bfs/inode.c b/fs/bfs/inode.c
index 6f60336c6628..8f3d9fd89604 100644
--- a/fs/bfs/inode.c
+++ b/fs/bfs/inode.c
@@ -353,35 +353,35 @@ static int bfs_fill_super(struct super_block *s, void *data, int silent)
        struct inode *inode;
        unsigned i, imap_len;
        struct bfs_sb_info *info;
-        long ret = -EINVAL;
+        int ret = -EINVAL;
        unsigned long i_sblock, i_eblock, i_eoff, s_size;
        info = kzalloc(sizeof(*info), GFP_KERNEL);
        if (!info)
                return -ENOMEM;
+        mutex_init(&info->bfs_lock);
        s->s_fs_info = info;
        sb_set_blocksize(s, BFS_BSIZE);
-        bh = sb_bread(s, 0);
+        info->si_sbh = sb_bread(s, 0);
-        if(!bh)
+        if (!info->si_sbh)
                goto out;
-        bfs_sb = (struct bfs_super_block *)bh->b_data;
+        bfs_sb = (struct bfs_super_block *)info->si_sbh->b_data;
        if (le32_to_cpu(bfs_sb->s_magic) != BFS_MAGIC) {
                if (!silent)
                        printf("No BFS filesystem on %s (magic=%08x)\n", 
                                s->s_id,  le32_to_cpu(bfs_sb->s_magic));
-                goto out;
+                goto out1;
        }
        if (BFS_UNCLEAN(bfs_sb, s) && !silent)
                printf("%s is unclean, continuing\n", s->s_id);
        s->s_magic = BFS_MAGIC;
-        info->si_sbh = bh;
        if (le32_to_cpu(bfs_sb->s_start) > le32_to_cpu(bfs_sb->s_end)) {
                printf("Superblock is corrupted\n");
-                goto out;
+                goto out1;
        }
        info->si_lasti = (le32_to_cpu(bfs_sb->s_start) - BFS_BSIZE) /
@@ -390,7 +390,7 @@ static int bfs_fill_super(struct super_block *s, void *data, int silent)
        imap_len = (info->si_lasti / 8) + 1;
        info->si_imap = kzalloc(imap_len, GFP_KERNEL);
        if (!info->si_imap)
-                goto out;
+                goto out1;
        for (i = 0; i < BFS_ROOT_INO; i++)
                set_bit(i, info->si_imap);
@@ -398,15 +398,13 @@ static int bfs_fill_super(struct super_block *s, void *data, int silent)
        inode = bfs_iget(s, BFS_ROOT_INO);
        if (IS_ERR(inode)) {
                ret = PTR_ERR(inode);
-                kfree(info->si_imap);
+                goto out2;
-                goto out;
        }
        s->s_root = d_alloc_root(inode);
        if (!s->s_root) {
                iput(inode);
                ret = -ENOMEM;
-                kfree(info->si_imap);
+                goto out2;
-                goto out;
        }
        info->si_blocks = (le32_to_cpu(bfs_sb->s_end) + 1) >> BFS_BSIZE_BITS;
@@ -419,10 +417,8 @@ static int bfs_fill_super(struct super_block *s, void *data, int silent)
        bh = sb_bread(s, info->si_blocks - 1);
        if (!bh) {
                printf("Last block not available: %lu\n", info->si_blocks - 1);
-                iput(inode);
                ret = -EIO;
-                kfree(info->si_imap);
+                goto out3;
-                goto out;
        }
        brelse(bh);
@@ -459,11 +455,8 @@ static int bfs_fill_super(struct super_block *s, void *data, int silent)
                        printf("Inode 0x%08x corrupted\n", i);
                        brelse(bh);
-                        s->s_root = NULL;
+                        ret = -EIO;
-                        kfree(info->si_imap);
+                        goto out3;
-                        kfree(info);
-                        s->s_fs_info = NULL;
-                        return -EIO;
                }
                if (!di->i_ino) {
@@ -483,11 +476,17 @@ static int bfs_fill_super(struct super_block *s, void *data, int silent)
                s->s_dirt = 1;
        } 
        dump_imap("read_super", s);
-        mutex_init(&info->bfs_lock);
        return 0;
+out3:
+        dput(s->s_root);
+        s->s_root = NULL;
+out2:
+        kfree(info->si_imap);
+out1:
+        brelse(info->si_sbh);
 out:
-        brelse(bh);
+        mutex_destroy(&info->bfs_lock);
        kfree(info);
        s->s_fs_info = NULL;
        return ret;
diff --git a/fs/binfmt_aout.c b/fs/binfmt_aout.c
index 346b69405363..fdd397099172 100644
--- a/fs/binfmt_aout.c
+++ b/fs/binfmt_aout.c
@@ -264,6 +264,7 @@ static int load_aout_binary(struct linux_binprm * bprm, struct pt_regs * regs)
 #else
        set_personality(PER_LINUX);
 #endif
+        setup_new_exec(bprm);
        current->mm->end_code = ex.a_text +
                (current->mm->start_code = N_TXTADDR(ex));
diff --git a/fs/binfmt_elf.c b/fs/binfmt_elf.c
index edd90c49003c..fd5b2ea5d299 100644
--- a/fs/binfmt_elf.c
+++ b/fs/binfmt_elf.c
@@ -662,27 +662,6 @@ static int load_elf_binary(struct linux_binprm *bprm, struct pt_regs *regs)
                        if (elf_interpreter[elf_ppnt->p_filesz - 1] != '\0')
                                goto out_free_interp;
-                        /*
-                         * The early SET_PERSONALITY here is so that the lookup
-                         * for the interpreter happens in the namespace of the 
-                         * to-be-execed image.  SET_PERSONALITY can select an
-                         * alternate root.
-                         *
-                         * However, SET_PERSONALITY is NOT allowed to switch
-                         * this task into the new images's memory mapping
-                         * policy - that is, TASK_SIZE must still evaluate to
-                         * that which is appropriate to the execing application.
-                         * This is because exit_mmap() needs to have TASK_SIZE
-                         * evaluate to the size of the old image.
-                         *
-                         * So if (say) a 64-bit application is execing a 32-bit
-                         * application it is the architecture's responsibility
-                         * to defer changing the value of TASK_SIZE until the
-                         * switch really is going to happen - do this in
-                         * flush_thread().      - akpm
-                         */
-                        SET_PERSONALITY(loc->elf_ex);
                        interpreter = open_exec(elf_interpreter);
                        retval = PTR_ERR(interpreter);
                        if (IS_ERR(interpreter))
@@ -730,9 +709,6 @@ static int load_elf_binary(struct linux_binprm *bprm, struct pt_regs *regs)
                /* Verify the interpreter has a valid arch */
                if (!elf_check_arch(&loc->interp_elf_ex))
                        goto out_free_dentry;
-        } else {
-                /* Executables without an interpreter also need a personality  */
-                SET_PERSONALITY(loc->elf_ex);
        }
        /* Flush all traces of the currently running executable */
@@ -752,7 +728,8 @@ static int load_elf_binary(struct linux_binprm *bprm, struct pt_regs *regs)
        if (!(current->personality & ADDR_NO_RANDOMIZE) && randomize_va_space)
                current->flags |= PF_RANDOMIZE;
-        arch_pick_mmap_layout(current->mm);
+        setup_new_exec(bprm);
        /* Do this so that we can load the interpreter, if need be.  We will
           change some of these later */
diff --git a/fs/binfmt_elf_fdpic.c b/fs/binfmt_elf_fdpic.c
index c25256a5c5b0..18d77297ccc8 100644
--- a/fs/binfmt_elf_fdpic.c
+++ b/fs/binfmt_elf_fdpic.c
@@ -171,6 +171,9 @@ static int load_elf_fdpic_binary(struct linux_binprm *bprm,
 #ifdef ELF_FDPIC_PLAT_INIT
        unsigned long dynaddr;
 #endif
+#ifndef CONFIG_MMU
+        unsigned long stack_prot;
+#endif
        struct file *interpreter = NULL; /* to shut gcc up */
        char *interpreter_name = NULL;
        int executable_stack;
@@ -316,6 +319,11 @@ static int load_elf_fdpic_binary(struct linux_binprm *bprm,
         * defunct, deceased, etc. after this point we have to exit via
         * error_kill */
        set_personality(PER_LINUX_FDPIC);
+        if (elf_read_implies_exec(&exec_params.hdr, executable_stack))
+                current->personality |= READ_IMPLIES_EXEC;
+        setup_new_exec(bprm);
        set_binfmt(&elf_fdpic_format);
        current->mm->start_code = 0;
@@ -377,9 +385,13 @@ static int load_elf_fdpic_binary(struct linux_binprm *bprm,
        if (stack_size < PAGE_SIZE * 2)
                stack_size = PAGE_SIZE * 2;
+        stack_prot = PROT_READ | PROT_WRITE;
+        if (executable_stack == EXSTACK_ENABLE_X ||
+            (executable_stack == EXSTACK_DEFAULT && VM_STACK_FLAGS & VM_EXEC))
+                stack_prot |= PROT_EXEC;
        down_write(&current->mm->mmap_sem);
-        current->mm->start_brk = do_mmap(NULL, 0, stack_size,
+        current->mm->start_brk = do_mmap(NULL, 0, stack_size, stack_prot,
-                                         PROT_READ | PROT_WRITE | PROT_EXEC,
                                         MAP_PRIVATE | MAP_ANONYMOUS |
                                         MAP_UNINITIALIZED | MAP_GROWSDOWN,
                                         0);
@@ -1798,11 +1810,11 @@ static int elf_fdpic_core_dump(struct coredump_params *cprm)
        ELF_CORE_WRITE_EXTRA_DATA;
 #endif
-        if (file->f_pos != offset) {
+        if (cprm->file->f_pos != offset) {
                /* Sanity check */
                printk(KERN_WARNING
                       "elf_core_dump: file->f_pos (%lld) != offset (%lld)\n",
-                       file->f_pos, offset);
+                       cprm->file->f_pos, offset);
        }
 end_coredump:
diff --git a/fs/binfmt_flat.c b/fs/binfmt_flat.c
index d4a00ea1054c..42c6b4a54445 100644
--- a/fs/binfmt_flat.c
+++ b/fs/binfmt_flat.c
@@ -519,6 +519,7 @@ static int load_flat_file(struct linux_binprm * bprm,
                /* OK, This is the point of no return */
                set_personality(PER_LINUX_32BIT);
+                setup_new_exec(bprm);
        }
        /*
diff --git a/fs/binfmt_som.c b/fs/binfmt_som.c
index 2a9b5330cc5e..cc8560f6c9b0 100644
--- a/fs/binfmt_som.c
+++ b/fs/binfmt_som.c
@@ -227,6 +227,7 @@ load_som_binary(struct linux_binprm * bprm, struct pt_regs * regs)
        /* OK, This is the point of no return */
        current->flags &= ~PF_FORKNOEXEC;
        current->personality = PER_HPUX;
+        setup_new_exec(bprm);
        /* Set the task size for HP-UX processes such that
         * the gateway page is outside the address space.
diff --git a/fs/bio-integrity.c b/fs/bio-integrity.c
index 49a34e7f7306..a16f29e888cd 100644
--- a/fs/bio-integrity.c
+++ b/fs/bio-integrity.c
@@ -61,7 +61,7 @@ static inline unsigned int vecs_to_idx(unsigned int nr)
 static inline int use_bip_pool(unsigned int idx)
 {
-        if (idx == BIOVEC_NR_POOLS)
+        if (idx == BIOVEC_MAX_IDX)
                return 1;
        return 0;
@@ -95,6 +95,7 @@ struct bio_integrity_payload *bio_integrity_alloc_bioset(struct bio *bio,
        /* Use mempool if lower order alloc failed or max vecs were requested */
        if (bip == NULL) {
+                idx = BIOVEC_MAX_IDX;  /* so we free the payload properly later */
                bip = mempool_alloc(bs->bio_integrity_pool, gfp_mask);
                if (unlikely(bip == NULL)) {
diff --git a/fs/bio.c b/fs/bio.c
index 76e6713abf94..88094afc29ea 100644
--- a/fs/bio.c
+++ b/fs/bio.c
@@ -78,7 +78,7 @@ static struct kmem_cache *bio_find_or_create_slab(unsigned int extra_size)
        i = 0;
        while (i < bio_slab_nr) {
-                struct bio_slab *bslab = &bio_slabs[i];
+                bslab = &bio_slabs[i];
                if (!bslab->slab && entry == -1)
                        entry = i;
@@ -542,13 +542,18 @@ static int __bio_add_page(struct request_queue *q, struct bio *bio, struct page
                if (page == prev->bv_page &&
                    offset == prev->bv_offset + prev->bv_len) {
+                        unsigned int prev_bv_len = prev->bv_len;
                        prev->bv_len += len;
                        if (q->merge_bvec_fn) {
                                struct bvec_merge_data bvm = {
+                                        /* prev_bvec is already charged in
+                                           bi_size, discharge it in order to
+                                           simulate merging updated prev_bvec
+                                           as new bvec. */
                                        .bi_bdev = bio->bi_bdev,
                                        .bi_sector = bio->bi_sector,
-                                        .bi_size = bio->bi_size,
+                                        .bi_size = bio->bi_size - prev_bv_len,
                                        .bi_rw = bio->bi_rw,
                                };
diff --git a/fs/block_dev.c b/fs/block_dev.c
index 73d6a735b8f3..d11d0289f3d2 100644
--- a/fs/block_dev.c
+++ b/fs/block_dev.c
@@ -246,7 +246,8 @@ struct super_block *freeze_bdev(struct block_device *bdev)
        if (!sb)
                goto out;
        if (sb->s_flags & MS_RDONLY) {
-                deactivate_locked_super(sb);
+                sb->s_frozen = SB_FREEZE_TRANS;
+                up_write(&sb->s_umount);
                mutex_unlock(&bdev->bd_fsfreeze_mutex);
                return sb;
        }
@@ -307,7 +308,7 @@ int thaw_bdev(struct block_device *bdev, struct super_block *sb)
        BUG_ON(sb->s_bdev != bdev);
        down_write(&sb->s_umount);
        if (sb->s_flags & MS_RDONLY)
-                goto out_deactivate;
+                goto out_unfrozen;
        if (sb->s_op->unfreeze_fs) {
                error = sb->s_op->unfreeze_fs(sb);
@@ -321,11 +322,11 @@ int thaw_bdev(struct block_device *bdev, struct super_block *sb)
                }
        }
+out_unfrozen:
        sb->s_frozen = SB_UNFROZEN;
        smp_wmb();
        wake_up(&sb->s_wait_unfrozen);
-out_deactivate:
        if (sb)
                deactivate_locked_super(sb);
 out_unlock:
diff --git a/fs/btrfs/acl.c b/fs/btrfs/acl.c
index 2e9e69987a82..6df6d6ed74fd 100644
--- a/fs/btrfs/acl.c
+++ b/fs/btrfs/acl.c
@@ -112,12 +112,14 @@ static int btrfs_set_acl(struct btrfs_trans_handle *trans,
        switch (type) {
        case ACL_TYPE_ACCESS:
                mode = inode->i_mode;
-                ret = posix_acl_equiv_mode(acl, &mode);
-                if (ret < 0)
-                        return ret;
-                ret = 0;
-                inode->i_mode = mode;
                name = POSIX_ACL_XATTR_ACCESS;
+                if (acl) {
+                        ret = posix_acl_equiv_mode(acl, &mode);
+                        if (ret < 0)
+                                return ret;
+                        inode->i_mode = mode;
+                }
+                ret = 0;
                break;
        case ACL_TYPE_DEFAULT:
                if (!S_ISDIR(inode->i_mode))
@@ -242,6 +244,7 @@ int btrfs_init_acl(struct btrfs_trans_handle *trans,
                                                    ACL_TYPE_ACCESS);
                        }
                }
+                posix_acl_release(clone);
        }
 failed:
        posix_acl_release(acl);
diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h
index 9f806dd04c27..2aa8ec6a0981 100644
--- a/fs/btrfs/ctree.h
+++ b/fs/btrfs/ctree.h
@@ -1161,6 +1161,7 @@ struct btrfs_root {
 #define BTRFS_MOUNT_SSD_SPREAD          (1 << 8)
 #define BTRFS_MOUNT_NOSSD               (1 << 9)
 #define BTRFS_MOUNT_DISCARD             (1 << 10)
+#define BTRFS_MOUNT_FORCE_COMPRESS      (1 << 11)
 #define btrfs_clear_opt(o, opt)         ((o) &= ~BTRFS_MOUNT_##opt)
 #define btrfs_set_opt(o, opt)           ((o) |= BTRFS_MOUNT_##opt)
diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c
index 009e3bd18f23..2b59201b955c 100644
--- a/fs/btrfs/disk-io.c
+++ b/fs/btrfs/disk-io.c
@@ -1982,7 +1982,12 @@ struct btrfs_root *open_ctree(struct super_block *sb,
        if (!(sb->s_flags & MS_RDONLY)) {
                ret = btrfs_recover_relocation(tree_root);
-                BUG_ON(ret);
+                if (ret < 0) {
+                        printk(KERN_WARNING
+                               "btrfs: failed to recover relocation\n");
+                        err = -EINVAL;
+                        goto fail_trans_kthread;
+                }
        }
        location.objectid = BTRFS_FS_TREE_OBJECTID;
@@ -1993,6 +1998,12 @@ struct btrfs_root *open_ctree(struct super_block *sb,
        if (!fs_info->fs_root)
                goto fail_trans_kthread;
+        if (!(sb->s_flags & MS_RDONLY)) {
+                down_read(&fs_info->cleanup_work_sem);
+                btrfs_orphan_cleanup(fs_info->fs_root);
+                up_read(&fs_info->cleanup_work_sem);
+        }
        return tree_root;
 fail_trans_kthread:
diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c
index 56e50137d0e6..559f72489b3b 100644
--- a/fs/btrfs/extent-tree.c
+++ b/fs/btrfs/extent-tree.c
@@ -83,6 +83,17 @@ static int block_group_bits(struct btrfs_block_group_cache *cache, u64 bits)
        return (cache->flags & bits) == bits;
 }
+void btrfs_get_block_group(struct btrfs_block_group_cache *cache)
+{
+        atomic_inc(&cache->count);
+}
+void btrfs_put_block_group(struct btrfs_block_group_cache *cache)
+{
+        if (atomic_dec_and_test(&cache->count))
+                kfree(cache);
+}
 /*
 * this adds the block group to the fs_info rb tree for the block group
 * cache
@@ -156,7 +167,7 @@ block_group_cache_tree_search(struct btrfs_fs_info *info, u64 bytenr,
                }
        }
        if (ret)
-                atomic_inc(&ret->count);
+                btrfs_get_block_group(ret);
        spin_unlock(&info->block_group_cache_lock);
        return ret;
@@ -407,6 +418,8 @@ err:
        put_caching_control(caching_ctl);
        atomic_dec(&block_group->space_info->caching_threads);
+        btrfs_put_block_group(block_group);
        return 0;
 }
@@ -447,6 +460,7 @@ static int cache_block_group(struct btrfs_block_group_cache *cache)
        up_write(&fs_info->extent_commit_sem);
        atomic_inc(&cache->space_info->caching_threads);
+        btrfs_get_block_group(cache);
        tsk = kthread_run(caching_kthread, cache, "btrfs-cache-%llu\n",
                          cache->key.objectid);
@@ -486,12 +500,6 @@ struct btrfs_block_group_cache *btrfs_lookup_block_group(
        return cache;
 }
-void btrfs_put_block_group(struct btrfs_block_group_cache *cache)
-{
-        if (atomic_dec_and_test(&cache->count))
-                kfree(cache);
-}
 static struct btrfs_space_info *__find_space_info(struct btrfs_fs_info *info,
                                                  u64 flags)
 {
@@ -2582,7 +2590,7 @@ next_block_group(struct btrfs_root *root,
        if (node) {
                cache = rb_entry(node, struct btrfs_block_group_cache,
                                 cache_node);
-                atomic_inc(&cache->count);
+                btrfs_get_block_group(cache);
        } else
                cache = NULL;
        spin_unlock(&root->fs_info->block_group_cache_lock);
@@ -4227,7 +4235,7 @@ search:
                u64 offset;
                int cached;
-                atomic_inc(&block_group->count);
+                btrfs_get_block_group(block_group);
                search_start = block_group->key.objectid;
 have_block_group:
@@ -4315,7 +4323,7 @@ have_block_group:
                                btrfs_put_block_group(block_group);
                                block_group = last_ptr->block_group;
-                                atomic_inc(&block_group->count);
+                                btrfs_get_block_group(block_group);
                                spin_unlock(&last_ptr->lock);
                                spin_unlock(&last_ptr->refill_lock);
@@ -5394,10 +5402,6 @@ static noinline int walk_down_tree(struct btrfs_trans_handle *trans,
        int ret;
        while (level >= 0) {
-                if (path->slots[level] >=
-                    btrfs_header_nritems(path->nodes[level]))
-                        break;
                ret = walk_down_proc(trans, root, path, wc, lookup_info);
                if (ret > 0)
                        break;
@@ -5405,6 +5409,10 @@ static noinline int walk_down_tree(struct btrfs_trans_handle *trans,
                if (level == 0)
                        break;
+                if (path->slots[level] >=
+                    btrfs_header_nritems(path->nodes[level]))
+                        break;
                ret = do_walk_down(trans, root, path, wc, &lookup_info);
                if (ret > 0) {
                        path->slots[level]++;
@@ -7395,9 +7403,7 @@ int btrfs_free_block_groups(struct btrfs_fs_info *info)
                        wait_block_group_cache_done(block_group);
                btrfs_remove_free_space_cache(block_group);
+                btrfs_put_block_group(block_group);
-                WARN_ON(atomic_read(&block_group->count) != 1);
-                kfree(block_group);
                spin_lock(&info->block_group_cache_lock);
        }
diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c
index 96577e8bf9fd..b177ed319612 100644
--- a/fs/btrfs/extent_io.c
+++ b/fs/btrfs/extent_io.c
@@ -3165,10 +3165,9 @@ struct extent_buffer *alloc_extent_buffer(struct extent_io_tree *tree,
                spin_unlock(&tree->buffer_lock);
                goto free_eb;
        }
-        spin_unlock(&tree->buffer_lock);
        /* add one reference for the tree */
        atomic_inc(&eb->refs);
+        spin_unlock(&tree->buffer_lock);
        return eb;
 free_eb:
diff --git a/fs/btrfs/extent_map.c b/fs/btrfs/extent_map.c
index 46bea0f4dc7b..428fcac45f90 100644
--- a/fs/btrfs/extent_map.c
+++ b/fs/btrfs/extent_map.c
@@ -155,20 +155,6 @@ static struct rb_node *__tree_search(struct rb_root *root, u64 offset,
        return NULL;
 }
-/*
- * look for an offset in the tree, and if it can't be found, return
- * the first offset we can find smaller than 'offset'.
- */
-static inline struct rb_node *tree_search(struct rb_root *root, u64 offset)
-{
-        struct rb_node *prev;
-        struct rb_node *ret;
-        ret = __tree_search(root, offset, &prev, NULL);
-        if (!ret)
-                return prev;
-        return ret;
-}
 /* check to see if two extent_map structs are adjacent and safe to merge */
 static int mergable_maps(struct extent_map *prev, struct extent_map *next)
 {
diff --git a/fs/btrfs/file.c b/fs/btrfs/file.c
index feaa13b105d9..6ed434ac037f 100644
--- a/fs/btrfs/file.c
+++ b/fs/btrfs/file.c
@@ -506,7 +506,8 @@ next_slot:
 }
 static int extent_mergeable(struct extent_buffer *leaf, int slot,
-                            u64 objectid, u64 bytenr, u64 *start, u64 *end)
+                            u64 objectid, u64 bytenr, u64 orig_offset,
+                            u64 *start, u64 *end)
 {
        struct btrfs_file_extent_item *fi;
        struct btrfs_key key;
@@ -522,6 +523,7 @@ static int extent_mergeable(struct extent_buffer *leaf, int slot,
        fi = btrfs_item_ptr(leaf, slot, struct btrfs_file_extent_item);
        if (btrfs_file_extent_type(leaf, fi) != BTRFS_FILE_EXTENT_REG ||
            btrfs_file_extent_disk_bytenr(leaf, fi) != bytenr ||
+            btrfs_file_extent_offset(leaf, fi) != key.offset - orig_offset ||
            btrfs_file_extent_compression(leaf, fi) ||
            btrfs_file_extent_encryption(leaf, fi) ||
            btrfs_file_extent_other_encoding(leaf, fi))
@@ -561,6 +563,7 @@ int btrfs_mark_extent_written(struct btrfs_trans_handle *trans,
        u64 split;
        int del_nr = 0;
        int del_slot = 0;
+        int recow;
        int ret;
        btrfs_drop_extent_cache(inode, start, end - 1, 0);
@@ -568,6 +571,7 @@ int btrfs_mark_extent_written(struct btrfs_trans_handle *trans,
        path = btrfs_alloc_path();
        BUG_ON(!path);
 again:
+        recow = 0;
        split = start;
        key.objectid = inode->i_ino;
        key.type = BTRFS_EXTENT_DATA_KEY;
@@ -591,12 +595,60 @@ again:
        bytenr = btrfs_file_extent_disk_bytenr(leaf, fi);
        num_bytes = btrfs_file_extent_disk_num_bytes(leaf, fi);
        orig_offset = key.offset - btrfs_file_extent_offset(leaf, fi);
+        memcpy(&new_key, &key, sizeof(new_key));
+        if (start == key.offset && end < extent_end) {
+                other_start = 0;
+                other_end = start;
+                if (extent_mergeable(leaf, path->slots[0] - 1,
+                                     inode->i_ino, bytenr, orig_offset,
+                                     &other_start, &other_end)) {
+                        new_key.offset = end;
+                        btrfs_set_item_key_safe(trans, root, path, &new_key);
+                        fi = btrfs_item_ptr(leaf, path->slots[0],
+                                            struct btrfs_file_extent_item);
+                        btrfs_set_file_extent_num_bytes(leaf, fi,
+                                                        extent_end - end);
+                        btrfs_set_file_extent_offset(leaf, fi,
+                                                     end - orig_offset);
+                        fi = btrfs_item_ptr(leaf, path->slots[0] - 1,
+                                            struct btrfs_file_extent_item);
+                        btrfs_set_file_extent_num_bytes(leaf, fi,
+                                                        end - other_start);
+                        btrfs_mark_buffer_dirty(leaf);
+                        goto out;
+                }
+        }
+        if (start > key.offset && end == extent_end) {
+                other_start = end;
+                other_end = 0;
+                if (extent_mergeable(leaf, path->slots[0] + 1,
+                                     inode->i_ino, bytenr, orig_offset,
+                                     &other_start, &other_end)) {
+                        fi = btrfs_item_ptr(leaf, path->slots[0],
+                                            struct btrfs_file_extent_item);
+                        btrfs_set_file_extent_num_bytes(leaf, fi,
+                                                        start - key.offset);
+                        path->slots[0]++;
+                        new_key.offset = start;
+                        btrfs_set_item_key_safe(trans, root, path, &new_key);
+                        fi = btrfs_item_ptr(leaf, path->slots[0],
+                                            struct btrfs_file_extent_item);
+                        btrfs_set_file_extent_num_bytes(leaf, fi,
+                                                        other_end - start);
+                        btrfs_set_file_extent_offset(leaf, fi,
+                                                     start - orig_offset);
+                        btrfs_mark_buffer_dirty(leaf);
+                        goto out;
+                }
+        }
        while (start > key.offset || end < extent_end) {
                if (key.offset == start)
                        split = end;
-                memcpy(&new_key, &key, sizeof(new_key));
                new_key.offset = split;
                ret = btrfs_duplicate_item(trans, root, path, &new_key);
                if (ret == -EAGAIN) {
@@ -631,15 +683,18 @@ again:
                        path->slots[0]--;
                        extent_end = end;
                }
+                recow = 1;
        }
-        fi = btrfs_item_ptr(leaf, path->slots[0],
-                            struct btrfs_file_extent_item);
        other_start = end;
        other_end = 0;
-        if (extent_mergeable(leaf, path->slots[0] + 1, inode->i_ino,
+        if (extent_mergeable(leaf, path->slots[0] + 1,
-                             bytenr, &other_start, &other_end)) {
+                             inode->i_ino, bytenr, orig_offset,
+                             &other_start, &other_end)) {
+                if (recow) {
+                        btrfs_release_path(root, path);
+                        goto again;
+                }
                extent_end = other_end;
                del_slot = path->slots[0] + 1;
                del_nr++;
@@ -650,8 +705,13 @@ again:
        }
        other_start = 0;
        other_end = start;
-        if (extent_mergeable(leaf, path->slots[0] - 1, inode->i_ino,
+        if (extent_mergeable(leaf, path->slots[0] - 1,
-                             bytenr, &other_start, &other_end)) {
+                             inode->i_ino, bytenr, orig_offset,
+                             &other_start, &other_end)) {
+                if (recow) {
+                        btrfs_release_path(root, path);
+                        goto again;
+                }
                key.offset = other_start;
                del_slot = path->slots[0];
                del_nr++;
@@ -661,21 +721,23 @@ again:
                BUG_ON(ret);
        }
        if (del_nr == 0) {
+                fi = btrfs_item_ptr(leaf, path->slots[0],
+                           struct btrfs_file_extent_item);
                btrfs_set_file_extent_type(leaf, fi,
                                           BTRFS_FILE_EXTENT_REG);
                btrfs_mark_buffer_dirty(leaf);
-                goto out;
+        } else {
-        }
+                fi = btrfs_item_ptr(leaf, del_slot - 1,
+                           struct btrfs_file_extent_item);
-        fi = btrfs_item_ptr(leaf, del_slot - 1,
+                btrfs_set_file_extent_type(leaf, fi,
-                            struct btrfs_file_extent_item);
+                                           BTRFS_FILE_EXTENT_REG);
-        btrfs_set_file_extent_type(leaf, fi, BTRFS_FILE_EXTENT_REG);
+                btrfs_set_file_extent_num_bytes(leaf, fi,
-        btrfs_set_file_extent_num_bytes(leaf, fi,
+                                                extent_end - key.offset);
-                                        extent_end - key.offset);
+                btrfs_mark_buffer_dirty(leaf);
-        btrfs_mark_buffer_dirty(leaf);
-        ret = btrfs_del_items(trans, root, path, del_slot, del_nr);
+                ret = btrfs_del_items(trans, root, path, del_slot, del_nr);
-        BUG_ON(ret);
+                BUG_ON(ret);
+        }
 out:
        btrfs_free_path(path);
        return 0;
@@ -1073,7 +1135,7 @@ int btrfs_sync_file(struct file *file, struct dentry *dentry, int datasync)
        }
        mutex_lock(&dentry->d_inode->i_mutex);
 out:
-        return ret > 0 ? EIO : ret;
+        return ret > 0 ? -EIO : ret;
 }
 static const struct vm_operations_struct btrfs_file_vm_ops = {
diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index 5440bab23635..4deb280f8969 100644
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -483,7 +483,8 @@ again:
                nr_pages_ret = 0;
                /* flag the file so we don't compress in the future */
-                BTRFS_I(inode)->flags |= BTRFS_INODE_NOCOMPRESS;
+                if (!btrfs_test_opt(root, FORCE_COMPRESS))
+                        BTRFS_I(inode)->flags |= BTRFS_INODE_NOCOMPRESS;
        }
        if (will_compress) {
                *num_added += 1;
@@ -1680,24 +1681,6 @@ static int insert_reserved_file_extent(struct btrfs_trans_handle *trans,
 * before we start the transaction.  It limits the amount of btree
 * reads required while inside the transaction.
 */
-static noinline void reada_csum(struct btrfs_root *root,
-                                struct btrfs_path *path,
-                                struct btrfs_ordered_extent *ordered_extent)
-{
-        struct btrfs_ordered_sum *sum;
-        u64 bytenr;
-        sum = list_entry(ordered_extent->list.next, struct btrfs_ordered_sum,
-                         list);
-        bytenr = sum->sums[0].bytenr;
-        /*
-         * we don't care about the results, the point of this search is
-         * just to get the btree leaves into ram
-         */
-        btrfs_lookup_csum(NULL, root->fs_info->csum_root, path, bytenr, 0);
-}
 /* as ordered data IO finishes, this gets called so we can finish
 * an ordered extent if the range of bytes in the file it covers are
 * fully written.
@@ -1708,7 +1691,6 @@ static int btrfs_finish_ordered_io(struct inode *inode, u64 start, u64 end)
        struct btrfs_trans_handle *trans;
        struct btrfs_ordered_extent *ordered_extent = NULL;
        struct extent_io_tree *io_tree = &BTRFS_I(inode)->io_tree;
-        struct btrfs_path *path;
        int compressed = 0;
        int ret;
@@ -1716,32 +1698,9 @@ static int btrfs_finish_ordered_io(struct inode *inode, u64 start, u64 end)
        if (!ret)
                return 0;
-        /*
+        ordered_extent = btrfs_lookup_ordered_extent(inode, start);
-         * before we join the transaction, try to do some of our IO.
-         * This will limit the amount of IO that we have to do with
-         * the transaction running.  We're unlikely to need to do any
-         * IO if the file extents are new, the disk_i_size checks
-         * covers the most common case.
-         */
-        if (start < BTRFS_I(inode)->disk_i_size) {
-                path = btrfs_alloc_path();
-                if (path) {
-                        ret = btrfs_lookup_file_extent(NULL, root, path,
-                                                       inode->i_ino,
-                                                       start, 0);
-                        ordered_extent = btrfs_lookup_ordered_extent(inode,
-                                                                     start);
-                        if (!list_empty(&ordered_extent->list)) {
-                                btrfs_release_path(root, path);
-                                reada_csum(root, path, ordered_extent);
-                        }
-                        btrfs_free_path(path);
-                }
-        }
-        if (!ordered_extent)
-                ordered_extent = btrfs_lookup_ordered_extent(inode, start);
        BUG_ON(!ordered_extent);
        if (test_bit(BTRFS_ORDERED_NOCOW, &ordered_extent->flags)) {
                BUG_ON(!list_empty(&ordered_extent->list));
                ret = btrfs_ordered_update_i_size(inode, 0, ordered_extent);
@@ -3995,7 +3954,11 @@ skip:
        /* Reached end of directory/root. Bump pos past the last item. */
        if (key_type == BTRFS_DIR_INDEX_KEY)
-                filp->f_pos = INT_LIMIT(off_t);
+                /*
+                 * 32-bit glibc will use getdents64, but then strtol -
+                 * so the last number we can serve is this.
+                 */
+                filp->f_pos = 0x7fffffff;
        else
                filp->f_pos++;
 nopos:
@@ -5789,7 +5752,7 @@ out_fail:
 }
 static int prealloc_file_range(struct inode *inode, u64 start, u64 end,
-                               u64 alloc_hint, int mode)
+                        u64 alloc_hint, int mode, loff_t actual_len)
 {
        struct btrfs_trans_handle *trans;
        struct btrfs_root *root = BTRFS_I(inode)->root;
@@ -5798,6 +5761,7 @@ static int prealloc_file_range(struct inode *inode, u64 start, u64 end,
        u64 cur_offset = start;
        u64 num_bytes = end - start;
        int ret = 0;
+        u64 i_size;
        while (num_bytes > 0) {
                alloc_size = min(num_bytes, root->fs_info->max_extent);
@@ -5835,9 +5799,15 @@ static int prealloc_file_range(struct inode *inode, u64 start, u64 end,
                inode->i_ctime = CURRENT_TIME;
                BTRFS_I(inode)->flags |= BTRFS_INODE_PREALLOC;
                if (!(mode & FALLOC_FL_KEEP_SIZE) &&
-                    cur_offset > inode->i_size) {
+                        (actual_len > inode->i_size) &&
-                        i_size_write(inode, cur_offset);
+                        (cur_offset > inode->i_size)) {
-                        btrfs_ordered_update_i_size(inode, cur_offset, NULL);
+                        if (cur_offset > actual_len)
+                                i_size  = actual_len;
+                        else
+                                i_size = cur_offset;
+                        i_size_write(inode, i_size);
+                        btrfs_ordered_update_i_size(inode, i_size, NULL);
                }
                ret = btrfs_update_inode(trans, root, inode);
@@ -5930,7 +5900,7 @@ static long btrfs_fallocate(struct inode *inode, int mode,
                     !test_bit(EXTENT_FLAG_PREALLOC, &em->flags))) {
                        ret = prealloc_file_range(inode,
                                                  cur_offset, last_byte,
-                                                  alloc_hint, mode);
+                                                alloc_hint, mode, offset+len);
                        if (ret < 0) {
                                free_extent_map(em);
                                break;
diff --git a/fs/btrfs/ordered-data.c b/fs/btrfs/ordered-data.c
index b10a49d4bc6a..5c2a9e78a949 100644
--- a/fs/btrfs/ordered-data.c
+++ b/fs/btrfs/ordered-data.c
@@ -626,6 +626,8 @@ int btrfs_ordered_update_i_size(struct inode *inode, u64 offset,
        if (ordered)
                offset = entry_end(ordered);
+        else
+                offset = ALIGN(offset, BTRFS_I(inode)->root->sectorsize);
        mutex_lock(&tree->mutex);
        disk_i_size = BTRFS_I(inode)->disk_i_size;
diff --git a/fs/btrfs/relocation.c b/fs/btrfs/relocation.c
index a9728680eca8..ab7ab5318745 100644
--- a/fs/btrfs/relocation.c
+++ b/fs/btrfs/relocation.c
@@ -3281,8 +3281,10 @@ static noinline_for_stack int relocate_block_group(struct reloc_control *rc)
                return -ENOMEM;
        path = btrfs_alloc_path();
-        if (!path)
+        if (!path) {
+                kfree(cluster);
                return -ENOMEM;
+        }
        rc->extents_found = 0;
        rc->extents_skipped = 0;
@@ -3762,7 +3764,8 @@ out:
                                       BTRFS_DATA_RELOC_TREE_OBJECTID);
                if (IS_ERR(fs_root))
                        err = PTR_ERR(fs_root);
-                btrfs_orphan_cleanup(fs_root);
+                else
+                        btrfs_orphan_cleanup(fs_root);
        }
        return err;
 }
diff --git a/fs/btrfs/super.c b/fs/btrfs/super.c
index 3f9b45704fcd..8a1ea6e64575 100644
--- a/fs/btrfs/super.c
+++ b/fs/btrfs/super.c
@@ -66,7 +66,8 @@ enum {
        Opt_degraded, Opt_subvol, Opt_device, Opt_nodatasum, Opt_nodatacow,
        Opt_max_extent, Opt_max_inline, Opt_alloc_start, Opt_nobarrier,
        Opt_ssd, Opt_nossd, Opt_ssd_spread, Opt_thread_pool, Opt_noacl,
-        Opt_compress, Opt_notreelog, Opt_ratio, Opt_flushoncommit,
+        Opt_compress, Opt_compress_force, Opt_notreelog, Opt_ratio,
+        Opt_flushoncommit,
        Opt_discard, Opt_err,
 };
@@ -82,6 +83,7 @@ static match_table_t tokens = {
        {Opt_alloc_start, "alloc_start=%s"},
        {Opt_thread_pool, "thread_pool=%d"},
        {Opt_compress, "compress"},
+        {Opt_compress_force, "compress-force"},
        {Opt_ssd, "ssd"},
        {Opt_ssd_spread, "ssd_spread"},
        {Opt_nossd, "nossd"},
@@ -173,6 +175,11 @@ int btrfs_parse_options(struct btrfs_root *root, char *options)
                        printk(KERN_INFO "btrfs: use compression\n");
                        btrfs_set_opt(info->mount_opt, COMPRESS);
                        break;
+                case Opt_compress_force:
+                        printk(KERN_INFO "btrfs: forcing compression\n");
+                        btrfs_set_opt(info->mount_opt, FORCE_COMPRESS);
+                        btrfs_set_opt(info->mount_opt, COMPRESS);
+                        break;
                case Opt_ssd:
                        printk(KERN_INFO "btrfs: use ssd allocation scheme\n");
                        btrfs_set_opt(info->mount_opt, SSD);
diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c
index 198cff28766d..41ecbb2347f2 100644
--- a/fs/btrfs/volumes.c
+++ b/fs/btrfs/volumes.c
@@ -1135,7 +1135,7 @@ int btrfs_rm_device(struct btrfs_root *root, char *device_path)
                root->fs_info->avail_metadata_alloc_bits;
        if ((all_avail & BTRFS_BLOCK_GROUP_RAID10) &&
-            root->fs_info->fs_devices->rw_devices <= 4) {
+            root->fs_info->fs_devices->num_devices <= 4) {
                printk(KERN_ERR "btrfs: unable to go below four devices "
                       "on raid10\n");
                ret = -EINVAL;
@@ -1143,7 +1143,7 @@ int btrfs_rm_device(struct btrfs_root *root, char *device_path)
        }
        if ((all_avail & BTRFS_BLOCK_GROUP_RAID1) &&
-            root->fs_info->fs_devices->rw_devices <= 2) {
+            root->fs_info->fs_devices->num_devices <= 2) {
                printk(KERN_ERR "btrfs: unable to go below two "
                       "devices on raid1\n");
                ret = -EINVAL;
@@ -1434,8 +1434,8 @@ int btrfs_init_new_device(struct btrfs_root *root, char *device_path)
                return -EINVAL;
        bdev = open_bdev_exclusive(device_path, 0, root->fs_info->bdev_holder);
-        if (!bdev)
+        if (IS_ERR(bdev))
-                return -EIO;
+                return PTR_ERR(bdev);
        if (root->fs_info->fs_devices->seeding) {
                seeding_dev = 1;
@@ -2538,6 +2538,11 @@ int btrfs_chunk_readonly(struct btrfs_root *root, u64 chunk_offset)
        if (!em)
                return 1;
+        if (btrfs_test_opt(root, DEGRADED)) {
+                free_extent_map(em);
+                return 0;
+        }
        map = (struct map_lookup *)em->bdev;
        for (i = 0; i < map->num_stripes; i++) {
                if (!map->stripes[i].dev->writeable) {
@@ -2649,8 +2654,10 @@ again:
        em = lookup_extent_mapping(em_tree, logical, *length);
        read_unlock(&em_tree->lock);
-        if (!em && unplug_page)
+        if (!em && unplug_page) {
+                kfree(multi);
                return 0;
+        }
        if (!em) {
                printk(KERN_CRIT "unable to find logical %llu len %llu\n",
diff --git a/fs/cachefiles/namei.c b/fs/cachefiles/namei.c
index 14ac4806e291..eeb4986ea7db 100644
--- a/fs/cachefiles/namei.c
+++ b/fs/cachefiles/namei.c
@@ -348,7 +348,17 @@ int cachefiles_delete_object(struct cachefiles_cache *cache,
        dir = dget_parent(object->dentry);
        mutex_lock_nested(&dir->d_inode->i_mutex, I_MUTEX_PARENT);
-        ret = cachefiles_bury_object(cache, dir, object->dentry);
+        /* we need to check that our parent is _still_ our parent - it may have
+         * been renamed */
+        if (dir == object->dentry->d_parent) {
+                ret = cachefiles_bury_object(cache, dir, object->dentry);
+        } else {
+                /* it got moved, presumably by cachefilesd culling it, so it's
+                 * no longer in the key path and we can ignore it */
+                mutex_unlock(&dir->d_inode->i_mutex);
+                ret = 0;
+        }
        dput(dir);
        _leave(" = %d", ret);
diff --git a/fs/cifs/CHANGES b/fs/cifs/CHANGES
index 094ea65afc85..49503d2edc7e 100644
--- a/fs/cifs/CHANGES
+++ b/fs/cifs/CHANGES
@@ -1,3 +1,7 @@
+Version 1.62
+------------
+Add sockopt=TCP_NODELAY mount option.
 Version 1.61
 ------------
 Fix append problem to Samba servers (files opened with O_APPEND could
@@ -5,7 +9,9 @@ have duplicated data). Fix oops in cifs_lookup. Workaround problem
 mounting to OS/400 Netserve. Fix oops in cifs_get_tcp_session.
 Disable use of server inode numbers when server only
 partially supports them (e.g. for one server querying inode numbers on
-FindFirst fails but QPathInfo queries works).
+FindFirst fails but QPathInfo queries works). Fix oops with dfs in 
+cifs_put_smb_ses. Fix mmap to work on directio mounts (needed
+for OpenOffice when on forcedirectio mount e.g.)
 Version 1.60
 -------------
diff --git a/fs/cifs/cifs_dfs_ref.c b/fs/cifs/cifs_dfs_ref.c
index fea9e898c4ba..b44ce0a0711c 100644
--- a/fs/cifs/cifs_dfs_ref.c
+++ b/fs/cifs/cifs_dfs_ref.c
@@ -269,7 +269,7 @@ static int add_mount_helper(struct vfsmount *newmnt, struct nameidata *nd,
        int err;
        mntget(newmnt);
-        err = do_add_mount(newmnt, &nd->path, nd->path.mnt->mnt_flags, mntlist);
+        err = do_add_mount(newmnt, &nd->path, nd->path.mnt->mnt_flags | MNT_SHRINKABLE, mntlist);
        switch (err) {
        case 0:
                path_put(&nd->path);
@@ -371,7 +371,6 @@ cifs_dfs_follow_mountpoint(struct dentry *dentry, struct nameidata *nd)
        if (IS_ERR(mnt))
                goto out_err;
-        nd->path.mnt->mnt_flags |= MNT_SHRINKABLE;
        rc = add_mount_helper(mnt, nd, &cifs_dfs_automount_list);
 out:
diff --git a/fs/cifs/cifsfs.c b/fs/cifs/cifsfs.c
index 29f1da761bbf..8c6a03627176 100644
--- a/fs/cifs/cifsfs.c
+++ b/fs/cifs/cifsfs.c
@@ -758,7 +758,7 @@ const struct file_operations cifs_file_ops = {
 };
 const struct file_operations cifs_file_direct_ops = {
-        /* no mmap, no aio, no readv -
+        /* no aio, no readv -
           BB reevaluate whether they can be done with directio, no cache */
        .read = cifs_user_read,
        .write = cifs_user_write,
@@ -767,6 +767,7 @@ const struct file_operations cifs_file_direct_ops = {
        .lock = cifs_lock,
        .fsync = cifs_fsync,
        .flush = cifs_flush,
+        .mmap = cifs_file_mmap,
        .splice_read = generic_file_splice_read,
 #ifdef CONFIG_CIFS_POSIX
        .unlocked_ioctl  = cifs_ioctl,
diff --git a/fs/cifs/cifsfs.h b/fs/cifs/cifsfs.h
index ac2b24c192f8..78c1b86d55f6 100644
--- a/fs/cifs/cifsfs.h
+++ b/fs/cifs/cifsfs.h
@@ -113,5 +113,5 @@ extern long cifs_ioctl(struct file *filep, unsigned int cmd, unsigned long arg);
 extern const struct export_operations cifs_export_ops;
 #endif /* EXPERIMENTAL */
-#define CIFS_VERSION   "1.61"
+#define CIFS_VERSION   "1.62"
 #endif                          /* _CIFSFS_H */
diff --git a/fs/cifs/cifsglob.h b/fs/cifs/cifsglob.h
index 4b35f7ec0583..ed751bb657db 100644
--- a/fs/cifs/cifsglob.h
+++ b/fs/cifs/cifsglob.h
@@ -149,6 +149,7 @@ struct TCP_Server_Info {
        bool svlocal:1;                 /* local server or remote */
        bool noblocksnd;                /* use blocking sendmsg */
        bool noautotune;                /* do not autotune send buf sizes */
+        bool tcp_nodelay;
        atomic_t inFlight;  /* number of requests on the wire to server */
 #ifdef CONFIG_CIFS_STATS2
        atomic_t inSend; /* requests trying to send */
diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c
index 63ea83ff687f..2e9e09ca0e30 100644
--- a/fs/cifs/connect.c
+++ b/fs/cifs/connect.c
@@ -98,7 +98,7 @@ struct smb_vol {
        bool nostrictsync:1; /* do not force expensive SMBflush on every sync */
        unsigned int rsize;
        unsigned int wsize;
-        unsigned int sockopt;
+        bool sockopt_tcp_nodelay:1;
        unsigned short int port;
        char *prepath;
 };
@@ -1142,9 +1142,11 @@ cifs_parse_mount_options(char *options, const char *devname,
                                        simple_strtoul(value, &value, 0);
                        }
                } else if (strnicmp(data, "sockopt", 5) == 0) {
-                        if (value && *value) {
+                        if (!value || !*value) {
-                                vol->sockopt =
+                                cERROR(1, ("no socket option specified"));
-                                        simple_strtoul(value, &value, 0);
+                                continue;
+                        } else if (strnicmp(value, "TCP_NODELAY", 11) == 0) {
+                                vol->sockopt_tcp_nodelay = 1;
                        }
                } else if (strnicmp(data, "netbiosname", 4) == 0) {
                        if (!value || !*value || (*value == ' ')) {
@@ -1514,6 +1516,7 @@ cifs_get_tcp_session(struct smb_vol *volume_info)
        tcp_ses->noblocksnd = volume_info->noblocksnd;
        tcp_ses->noautotune = volume_info->noautotune;
+        tcp_ses->tcp_nodelay = volume_info->sockopt_tcp_nodelay;
        atomic_set(&tcp_ses->inFlight, 0);
        init_waitqueue_head(&tcp_ses->response_q);
        init_waitqueue_head(&tcp_ses->request_q);
@@ -1764,6 +1767,7 @@ static int
 ipv4_connect(struct TCP_Server_Info *server)
 {
        int rc = 0;
+        int val;
        bool connected = false;
        __be16 orig_port = 0;
        struct socket *socket = server->ssocket;
@@ -1845,6 +1849,14 @@ ipv4_connect(struct TCP_Server_Info *server)
                        socket->sk->sk_rcvbuf = 140 * 1024;
        }
+        if (server->tcp_nodelay) {
+                val = 1;
+                rc = kernel_setsockopt(socket, SOL_TCP, TCP_NODELAY,
+                                (char *)&val, sizeof(val));
+                if (rc)
+                        cFYI(1, ("set TCP_NODELAY socket option error %d", rc));
+        }
         cFYI(1, ("sndbuf %d rcvbuf %d rcvtimeo 0x%lx",
                 socket->sk->sk_sndbuf,
                 socket->sk->sk_rcvbuf, socket->sk->sk_rcvtimeo));
@@ -1916,6 +1928,7 @@ static int
 ipv6_connect(struct TCP_Server_Info *server)
 {
        int rc = 0;
+        int val;
        bool connected = false;
        __be16 orig_port = 0;
        struct socket *socket = server->ssocket;
@@ -1987,6 +2000,15 @@ ipv6_connect(struct TCP_Server_Info *server)
         */
        socket->sk->sk_rcvtimeo = 7 * HZ;
        socket->sk->sk_sndtimeo = 5 * HZ;
+        if (server->tcp_nodelay) {
+                val = 1;
+                rc = kernel_setsockopt(socket, SOL_TCP, TCP_NODELAY,
+                                (char *)&val, sizeof(val));
+                if (rc)
+                        cFYI(1, ("set TCP_NODELAY socket option error %d", rc));
+        }
        server->ssocket = socket;
        return rc;
@@ -2287,12 +2309,12 @@ int
 cifs_mount(struct super_block *sb, struct cifs_sb_info *cifs_sb,
                char *mount_data_global, const char *devname)
 {
-        int rc = 0;
+        int rc;
        int xid;
        struct smb_vol *volume_info;
-        struct cifsSesInfo *pSesInfo = NULL;
+        struct cifsSesInfo *pSesInfo;
-        struct cifsTconInfo *tcon = NULL;
+        struct cifsTconInfo *tcon;
-        struct TCP_Server_Info *srvTcp = NULL;
+        struct TCP_Server_Info *srvTcp;
        char   *full_path;
        char *mount_data = mount_data_global;
 #ifdef CONFIG_CIFS_DFS_UPCALL
@@ -2301,6 +2323,10 @@ cifs_mount(struct super_block *sb, struct cifs_sb_info *cifs_sb,
        int referral_walks_count = 0;
 try_mount_again:
 #endif
+        rc = 0;
+        tcon = NULL;
+        pSesInfo = NULL;
+        srvTcp = NULL;
        full_path = NULL;
        xid = GetXid();
@@ -2597,6 +2623,7 @@ remote_path_check:
                        cleanup_volume_info(&volume_info);
                        referral_walks_count++;
+                        FreeXid(xid);
                        goto try_mount_again;
                }
 #else /* No DFS support, return error on mount */
diff --git a/fs/cifs/inode.c b/fs/cifs/inode.c
index cf18ee765590..e3fda978f481 100644
--- a/fs/cifs/inode.c
+++ b/fs/cifs/inode.c
@@ -1762,8 +1762,18 @@ cifs_setattr_unix(struct dentry *direntry, struct iattr *attrs)
                                        CIFS_MOUNT_MAP_SPECIAL_CHR);
        }
-        if (!rc)
+        if (!rc) {
                rc = inode_setattr(inode, attrs);
+                /* force revalidate when any of these times are set since some
+                   of the fs types (eg ext3, fat) do not have fine enough
+                   time granularity to match protocol, and we do not have a
+                   a way (yet) to query the server fs's time granularity (and
+                   whether it rounds times down).
+                */
+                if (!rc && (attrs->ia_valid & (ATTR_MTIME | ATTR_CTIME)))
+                        cifsInode->time = 0;
+        }
 out:
        kfree(args);
        kfree(full_path);
diff --git a/fs/cifs/readdir.c b/fs/cifs/readdir.c
index f84062f9a985..c343b14ba2d3 100644
--- a/fs/cifs/readdir.c
+++ b/fs/cifs/readdir.c
@@ -77,6 +77,11 @@ cifs_readdir_lookup(struct dentry *parent, struct qstr *name,
        cFYI(1, ("For %s", name->name));
+        if (parent->d_op && parent->d_op->d_hash)
+                parent->d_op->d_hash(parent, name);
+        else
+                name->hash = full_name_hash(name->name, name->len);
        dentry = d_lookup(parent, name);
        if (dentry) {
                /* FIXME: check for inode number changes? */
@@ -666,12 +671,11 @@ static int cifs_get_name_from_search_buf(struct qstr *pqst,
                                           min(len, max_len), nlt,
                                           cifs_sb->mnt_cifs_flags &
                                                CIFS_MOUNT_MAP_SPECIAL_CHR);
+                pqst->len -= nls_nullsize(nlt);
        } else {
                pqst->name = filename;
                pqst->len = len;
        }
-        pqst->hash = full_name_hash(pqst->name, pqst->len);
-/*      cFYI(1, ("filldir on %s",pqst->name));  */
        return rc;
 }
diff --git a/fs/cifs/sess.c b/fs/cifs/sess.c
index 7085a6275c4c..aaa9c1c5a5bd 100644
--- a/fs/cifs/sess.c
+++ b/fs/cifs/sess.c
@@ -223,9 +223,9 @@ static void unicode_ssetup_strings(char **pbcc_area, struct cifsSesInfo *ses,
                /* null user mount */
                *bcc_ptr = 0;
                *(bcc_ptr+1) = 0;
-        } else { /* 300 should be long enough for any conceivable user name */
+        } else {
                bytes_ret = cifs_strtoUCS((__le16 *) bcc_ptr, ses->userName,
-                                          300, nls_cp);
+                                          MAX_USERNAME_SIZE, nls_cp);
        }
        bcc_ptr += 2 * bytes_ret;
        bcc_ptr += 2; /* account for null termination */
@@ -246,11 +246,10 @@ static void ascii_ssetup_strings(char **pbcc_area, struct cifsSesInfo *ses,
        /* copy user */
        if (ses->userName == NULL) {
                /* BB what about null user mounts - check that we do this BB */
-        } else { /* 300 should be long enough for any conceivable user name */
+        } else {
-                strncpy(bcc_ptr, ses->userName, 300);
+                strncpy(bcc_ptr, ses->userName, MAX_USERNAME_SIZE);
        }
-        /* BB improve check for overflow */
+        bcc_ptr += strnlen(ses->userName, MAX_USERNAME_SIZE);
-        bcc_ptr += strnlen(ses->userName, 300);
        *bcc_ptr = 0;
        bcc_ptr++; /* account for null termination */
diff --git a/fs/compat_ioctl.c b/fs/compat_ioctl.c
index 332dd00f0894..0ca9ec4a79c3 100644
--- a/fs/compat_ioctl.c
+++ b/fs/compat_ioctl.c
@@ -301,6 +301,12 @@ static int sg_ioctl_trans(unsigned int fd, unsigned int cmd,
        u32 data;
        void __user *dxferp;
        int err;
+        int interface_id;
+        if (get_user(interface_id, &sgio32->interface_id))
+                return -EFAULT;
+        if (interface_id != 'S')
+                return sys_ioctl(fd, cmd, (unsigned long)sgio32);
        if (get_user(iovec_count, &sgio32->iovec_count))
                return -EFAULT;
@@ -936,6 +942,7 @@ COMPATIBLE_IOCTL(TCSETSF)
 COMPATIBLE_IOCTL(TIOCLINUX)
 COMPATIBLE_IOCTL(TIOCSBRK)
 COMPATIBLE_IOCTL(TIOCCBRK)
+COMPATIBLE_IOCTL(TIOCGSID)
 COMPATIBLE_IOCTL(TIOCGICOUNT)
 /* Little t */
 COMPATIBLE_IOCTL(TIOCGETD)
@@ -1005,6 +1012,9 @@ COMPATIBLE_IOCTL(SCSI_IOCTL_SEND_COMMAND)
 COMPATIBLE_IOCTL(SCSI_IOCTL_PROBE_HOST)
 COMPATIBLE_IOCTL(SCSI_IOCTL_GET_PCI)
 #endif
+/* Big V (don't complain on serial console) */
+IGNORE_IOCTL(VT_OPENQRY)
+IGNORE_IOCTL(VT_GETMODE)
 /* Little p (/dev/rtc, /dev/envctrl, etc.) */
 COMPATIBLE_IOCTL(RTC_AIE_ON)
 COMPATIBLE_IOCTL(RTC_AIE_OFF)
@@ -1035,6 +1045,8 @@ COMPATIBLE_IOCTL(FIOQSIZE)
 #ifdef CONFIG_BLOCK
 /* loop */
 IGNORE_IOCTL(LOOP_CLR_FD)
+/* md calls this on random blockdevs */
+IGNORE_IOCTL(RAID_VERSION)
 /* SG stuff */
 COMPATIBLE_IOCTL(SG_SET_TIMEOUT)
 COMPATIBLE_IOCTL(SG_GET_TIMEOUT)
diff --git a/fs/configfs/symlink.c b/fs/configfs/symlink.c
index c8afa6b1d91d..32a5f46b1157 100644
--- a/fs/configfs/symlink.c
+++ b/fs/configfs/symlink.c
@@ -121,8 +121,10 @@ static int get_target(const char *symname, struct path *path,
                                ret = -ENOENT;
                                path_put(path);
                        }
-                } else
+                } else {
                        ret = -EPERM;
+                        path_put(path);
+                }
        }
        return ret;
diff --git a/fs/debugfs/inode.c b/fs/debugfs/inode.c
index b486169f42bf..274ac865bae8 100644
--- a/fs/debugfs/inode.c
+++ b/fs/debugfs/inode.c
@@ -160,15 +160,8 @@ static int debugfs_create_by_name(const char *name, mode_t mode,
         * block. A pointer to that is in the struct vfsmount that we
         * have around.
         */
-        if (!parent) {
+        if (!parent)
-                if (debugfs_mount && debugfs_mount->mnt_sb) {
+                parent = debugfs_mount->mnt_sb->s_root;
-                        parent = debugfs_mount->mnt_sb->s_root;
-                }
-        }
-        if (!parent) {
-                pr_debug("debugfs: Ah! can not find a parent!\n");
-                return -EFAULT;
-        }
        *dentry = NULL;
        mutex_lock(&parent->d_inode->i_mutex);
diff --git a/fs/ecryptfs/crypto.c b/fs/ecryptfs/crypto.c
index fbb6e5eed697..7cb0a59f4b9d 100644
--- a/fs/ecryptfs/crypto.c
+++ b/fs/ecryptfs/crypto.c
@@ -1748,7 +1748,7 @@ ecryptfs_process_key_cipher(struct crypto_blkcipher **key_tfm,
                            char *cipher_name, size_t *key_size)
 {
        char dummy_key[ECRYPTFS_MAX_KEY_BYTES];
-        char *full_alg_name;
+        char *full_alg_name = NULL;
        int rc;
        *key_tfm = NULL;
@@ -1763,7 +1763,6 @@ ecryptfs_process_key_cipher(struct crypto_blkcipher **key_tfm,
        if (rc)
                goto out;
        *key_tfm = crypto_alloc_blkcipher(full_alg_name, 0, CRYPTO_ALG_ASYNC);
-        kfree(full_alg_name);
        if (IS_ERR(*key_tfm)) {
                rc = PTR_ERR(*key_tfm);
                printk(KERN_ERR "Unable to allocate crypto cipher with name "
@@ -1786,6 +1785,7 @@ ecryptfs_process_key_cipher(struct crypto_blkcipher **key_tfm,
                goto out;
        }
 out:
+        kfree(full_alg_name);
        return rc;
 }
diff --git a/fs/ecryptfs/file.c b/fs/ecryptfs/file.c
index 9e944057001b..678172b61be2 100644
--- a/fs/ecryptfs/file.c
+++ b/fs/ecryptfs/file.c
@@ -158,7 +158,7 @@ static int ecryptfs_open(struct inode *inode, struct file *file)
        struct dentry *ecryptfs_dentry = file->f_path.dentry;
        /* Private value of ecryptfs_dentry allocated in
         * ecryptfs_lookup() */
-        struct dentry *lower_dentry = ecryptfs_dentry_to_lower(ecryptfs_dentry);
+        struct dentry *lower_dentry;
        struct ecryptfs_file_info *file_info;
        mount_crypt_stat = &ecryptfs_superblock_to_private(
@@ -191,13 +191,6 @@ static int ecryptfs_open(struct inode *inode, struct file *file)
                                      | ECRYPTFS_ENCRYPTED);
        }
        mutex_unlock(&crypt_stat->cs_mutex);
-        if ((ecryptfs_inode_to_private(inode)->lower_file->f_flags & O_RDONLY)
-            && !(file->f_flags & O_RDONLY)) {
-                rc = -EPERM;
-                printk(KERN_WARNING "%s: Lower persistent file is RO; eCryptfs "
-                       "file must hence be opened RO\n", __func__);
-                goto out;
-        }
        if (!ecryptfs_inode_to_private(inode)->lower_file) {
                rc = ecryptfs_init_persistent_file(ecryptfs_dentry);
                if (rc) {
@@ -208,6 +201,13 @@ static int ecryptfs_open(struct inode *inode, struct file *file)
                        goto out;
                }
        }
+        if ((ecryptfs_inode_to_private(inode)->lower_file->f_flags & O_RDONLY)
+            && !(file->f_flags & O_RDONLY)) {
+                rc = -EPERM;
+                printk(KERN_WARNING "%s: Lower persistent file is RO; eCryptfs "
+                       "file must hence be opened RO\n", __func__);
+                goto out;
+        }
        ecryptfs_set_file_lower(
                file, ecryptfs_inode_to_private(inode)->lower_file);
        if (S_ISDIR(ecryptfs_dentry->d_inode->i_mode)) {
@@ -299,7 +299,6 @@ static int ecryptfs_ioctl(struct inode *inode, struct file *file,
 const struct file_operations ecryptfs_dir_fops = {
        .readdir = ecryptfs_readdir,
        .ioctl = ecryptfs_ioctl,
-        .mmap = generic_file_mmap,
        .open = ecryptfs_open,
        .flush = ecryptfs_flush,
        .release = ecryptfs_release,
diff --git a/fs/ecryptfs/inode.c b/fs/ecryptfs/inode.c
index 429ca0b3ba08..4a430ab4115c 100644
--- a/fs/ecryptfs/inode.c
+++ b/fs/ecryptfs/inode.c
@@ -282,7 +282,8 @@ int ecryptfs_lookup_and_interpose_lower(struct dentry *ecryptfs_dentry,
                goto out;
        }
        rc = ecryptfs_interpose(lower_dentry, ecryptfs_dentry,
-                                ecryptfs_dir_inode->i_sb, 1);
+                                ecryptfs_dir_inode->i_sb,
+                                ECRYPTFS_INTERPOSE_FLAG_D_ADD);
        if (rc) {
                printk(KERN_ERR "%s: Error interposing; rc = [%d]\n",
                       __func__, rc);
@@ -463,9 +464,6 @@ out_lock:
        unlock_dir(lower_dir_dentry);
        dput(lower_new_dentry);
        dput(lower_old_dentry);
-        d_drop(lower_old_dentry);
-        d_drop(new_dentry);
-        d_drop(old_dentry);
        return rc;
 }
@@ -614,6 +612,7 @@ ecryptfs_rename(struct inode *old_dir, struct dentry *old_dentry,
        struct dentry *lower_new_dentry;
        struct dentry *lower_old_dir_dentry;
        struct dentry *lower_new_dir_dentry;
+        struct dentry *trap = NULL;
        lower_old_dentry = ecryptfs_dentry_to_lower(old_dentry);
        lower_new_dentry = ecryptfs_dentry_to_lower(new_dentry);
@@ -621,7 +620,17 @@ ecryptfs_rename(struct inode *old_dir, struct dentry *old_dentry,
        dget(lower_new_dentry);
        lower_old_dir_dentry = dget_parent(lower_old_dentry);
        lower_new_dir_dentry = dget_parent(lower_new_dentry);
-        lock_rename(lower_old_dir_dentry, lower_new_dir_dentry);
+        trap = lock_rename(lower_old_dir_dentry, lower_new_dir_dentry);
+        /* source should not be ancestor of target */
+        if (trap == lower_old_dentry) {
+                rc = -EINVAL;
+                goto out_lock;
+        }
+        /* target should not be ancestor of source */
+        if (trap == lower_new_dentry) {
+                rc = -ENOTEMPTY;
+                goto out_lock;
+        }
        rc = vfs_rename(lower_old_dir_dentry->d_inode, lower_old_dentry,
                        lower_new_dir_dentry->d_inode, lower_new_dentry);
        if (rc)
@@ -715,31 +724,31 @@ static void *ecryptfs_follow_link(struct dentry *dentry, struct nameidata *nd)
        /* Released in ecryptfs_put_link(); only release here on error */
        buf = kmalloc(len, GFP_KERNEL);
        if (!buf) {
-                rc = -ENOMEM;
+                buf = ERR_PTR(-ENOMEM);
                goto out;
        }
        old_fs = get_fs();
        set_fs(get_ds());
        rc = dentry->d_inode->i_op->readlink(dentry, (char __user *)buf, len);
        set_fs(old_fs);
-        if (rc < 0)
+        if (rc < 0) {
-                goto out_free;
+                kfree(buf);
-        else
+                buf = ERR_PTR(rc);
+        } else
                buf[rc] = '\0';
-        rc = 0;
-        nd_set_link(nd, buf);
-        goto out;
-out_free:
-        kfree(buf);
 out:
-        return ERR_PTR(rc);
+        nd_set_link(nd, buf);
+        return NULL;
 }
 static void
 ecryptfs_put_link(struct dentry *dentry, struct nameidata *nd, void *ptr)
 {
-        /* Free the char* */
+        char *buf = nd_get_link(nd);
-        kfree(nd_get_link(nd));
+        if (!IS_ERR(buf)) {
+                /* Free the char* */
+                kfree(buf);
+        }
 }
 /**
@@ -772,18 +781,23 @@ upper_size_to_lower_size(struct ecryptfs_crypt_stat *crypt_stat,
 }
 /**
- * ecryptfs_truncate
+ * truncate_upper
 * @dentry: The ecryptfs layer dentry
- * @new_length: The length to expand the file to
+ * @ia: Address of the ecryptfs inode's attributes
+ * @lower_ia: Address of the lower inode's attributes
 *
 * Function to handle truncations modifying the size of the file. Note
 * that the file sizes are interpolated. When expanding, we are simply
- * writing strings of 0's out. When truncating, we need to modify the
+ * writing strings of 0's out. When truncating, we truncate the upper
- * underlying file size according to the page index interpolations.
+ * inode and update the lower_ia according to the page index
+ * interpolations. If ATTR_SIZE is set in lower_ia->ia_valid upon return,
+ * the caller must use lower_ia in a call to notify_change() to perform
+ * the truncation of the lower inode.
 *
 * Returns zero on success; non-zero otherwise
 */
-int ecryptfs_truncate(struct dentry *dentry, loff_t new_length)
+static int truncate_upper(struct dentry *dentry, struct iattr *ia,
+                          struct iattr *lower_ia)
 {
        int rc = 0;
        struct inode *inode = dentry->d_inode;
@@ -794,8 +808,10 @@ int ecryptfs_truncate(struct dentry *dentry, loff_t new_length)
        loff_t lower_size_before_truncate;
        loff_t lower_size_after_truncate;
-        if (unlikely((new_length == i_size)))
+        if (unlikely((ia->ia_size == i_size))) {
+                lower_ia->ia_valid &= ~ATTR_SIZE;
                goto out;
+        }
        crypt_stat = &ecryptfs_inode_to_private(dentry->d_inode)->crypt_stat;
        /* Set up a fake ecryptfs file, this is used to interface with
         * the file in the underlying filesystem so that the
@@ -815,28 +831,30 @@ int ecryptfs_truncate(struct dentry *dentry, loff_t new_length)
                &fake_ecryptfs_file,
                ecryptfs_inode_to_private(dentry->d_inode)->lower_file);
        /* Switch on growing or shrinking file */
-        if (new_length > i_size) {
+        if (ia->ia_size > i_size) {
                char zero[] = { 0x00 };
+                lower_ia->ia_valid &= ~ATTR_SIZE;
                /* Write a single 0 at the last position of the file;
                 * this triggers code that will fill in 0's throughout
                 * the intermediate portion of the previous end of the
                 * file and the new and of the file */
                rc = ecryptfs_write(&fake_ecryptfs_file, zero,
-                                    (new_length - 1), 1);
+                                    (ia->ia_size - 1), 1);
-        } else { /* new_length < i_size_read(inode) */
+        } else { /* ia->ia_size < i_size_read(inode) */
-                /* We're chopping off all the pages down do the page
+                /* We're chopping off all the pages down to the page
-                 * in which new_length is located. Fill in the end of
+                 * in which ia->ia_size is located. Fill in the end of
-                 * that page from (new_length & ~PAGE_CACHE_MASK) to
+                 * that page from (ia->ia_size & ~PAGE_CACHE_MASK) to
                 * PAGE_CACHE_SIZE with zeros. */
                size_t num_zeros = (PAGE_CACHE_SIZE
-                                    - (new_length & ~PAGE_CACHE_MASK));
+                                    - (ia->ia_size & ~PAGE_CACHE_MASK));
                if (!(crypt_stat->flags & ECRYPTFS_ENCRYPTED)) {
-                        rc = vmtruncate(inode, new_length);
+                        rc = vmtruncate(inode, ia->ia_size);
                        if (rc)
                                goto out_free;
-                        rc = vmtruncate(lower_dentry->d_inode, new_length);
+                        lower_ia->ia_size = ia->ia_size;
+                        lower_ia->ia_valid |= ATTR_SIZE;
                        goto out_free;
                }
                if (num_zeros) {
@@ -848,7 +866,7 @@ int ecryptfs_truncate(struct dentry *dentry, loff_t new_length)
                                goto out_free;
                        }
                        rc = ecryptfs_write(&fake_ecryptfs_file, zeros_virt,
-                                            new_length, num_zeros);
+                                            ia->ia_size, num_zeros);
                        kfree(zeros_virt);
                        if (rc) {
                                printk(KERN_ERR "Error attempting to zero out "
@@ -857,7 +875,7 @@ int ecryptfs_truncate(struct dentry *dentry, loff_t new_length)
                                goto out_free;
                        }
                }
-                vmtruncate(inode, new_length);
+                vmtruncate(inode, ia->ia_size);
                rc = ecryptfs_write_inode_size_to_metadata(inode);
                if (rc) {
                        printk(KERN_ERR "Problem with "
@@ -870,10 +888,12 @@ int ecryptfs_truncate(struct dentry *dentry, loff_t new_length)
                lower_size_before_truncate =
                    upper_size_to_lower_size(crypt_stat, i_size);
                lower_size_after_truncate =
-                    upper_size_to_lower_size(crypt_stat, new_length);
+                    upper_size_to_lower_size(crypt_stat, ia->ia_size);
-                if (lower_size_after_truncate < lower_size_before_truncate)
+                if (lower_size_after_truncate < lower_size_before_truncate) {
-                        vmtruncate(lower_dentry->d_inode,
+                        lower_ia->ia_size = lower_size_after_truncate;
-                                   lower_size_after_truncate);
+                        lower_ia->ia_valid |= ATTR_SIZE;
+                } else
+                        lower_ia->ia_valid &= ~ATTR_SIZE;
        }
 out_free:
        if (ecryptfs_file_to_private(&fake_ecryptfs_file))
@@ -883,6 +903,33 @@ out:
        return rc;
 }
+/**
+ * ecryptfs_truncate
+ * @dentry: The ecryptfs layer dentry
+ * @new_length: The length to expand the file to
+ *
+ * Simple function that handles the truncation of an eCryptfs inode and
+ * its corresponding lower inode.
+ *
+ * Returns zero on success; non-zero otherwise
+ */
+int ecryptfs_truncate(struct dentry *dentry, loff_t new_length)
+{
+        struct iattr ia = { .ia_valid = ATTR_SIZE, .ia_size = new_length };
+        struct iattr lower_ia = { .ia_valid = 0 };
+        int rc;
+        rc = truncate_upper(dentry, &ia, &lower_ia);
+        if (!rc && lower_ia.ia_valid & ATTR_SIZE) {
+                struct dentry *lower_dentry = ecryptfs_dentry_to_lower(dentry);
+                mutex_lock(&lower_dentry->d_inode->i_mutex);
+                rc = notify_change(lower_dentry, &lower_ia);
+                mutex_unlock(&lower_dentry->d_inode->i_mutex);
+        }
+        return rc;
+}
 static int
 ecryptfs_permission(struct inode *inode, int mask)
 {
@@ -905,6 +952,7 @@ static int ecryptfs_setattr(struct dentry *dentry, struct iattr *ia)
 {
        int rc = 0;
        struct dentry *lower_dentry;
+        struct iattr lower_ia;
        struct inode *inode;
        struct inode *lower_inode;
        struct ecryptfs_crypt_stat *crypt_stat;
@@ -943,15 +991,11 @@ static int ecryptfs_setattr(struct dentry *dentry, struct iattr *ia)
                }
        }
        mutex_unlock(&crypt_stat->cs_mutex);
+        memcpy(&lower_ia, ia, sizeof(lower_ia));
+        if (ia->ia_valid & ATTR_FILE)
+                lower_ia.ia_file = ecryptfs_file_to_lower(ia->ia_file);
        if (ia->ia_valid & ATTR_SIZE) {
-                ecryptfs_printk(KERN_DEBUG,
+                rc = truncate_upper(dentry, ia, &lower_ia);
-                                "ia->ia_valid = [0x%x] ATTR_SIZE" " = [0x%x]\n",
-                                ia->ia_valid, ATTR_SIZE);
-                rc = ecryptfs_truncate(dentry, ia->ia_size);
-                /* ecryptfs_truncate handles resizing of the lower file */
-                ia->ia_valid &= ~ATTR_SIZE;
-                ecryptfs_printk(KERN_DEBUG, "ia->ia_valid = [%x]\n",
-                                ia->ia_valid);
                if (rc < 0)
                        goto out;
        }
@@ -960,17 +1004,32 @@ static int ecryptfs_setattr(struct dentry *dentry, struct iattr *ia)
         * mode change is for clearing setuid/setgid bits. Allow lower fs
         * to interpret this in its own way.
         */
-        if (ia->ia_valid & (ATTR_KILL_SUID | ATTR_KILL_SGID))
+        if (lower_ia.ia_valid & (ATTR_KILL_SUID | ATTR_KILL_SGID))
-                ia->ia_valid &= ~ATTR_MODE;
+                lower_ia.ia_valid &= ~ATTR_MODE;
        mutex_lock(&lower_dentry->d_inode->i_mutex);
-        rc = notify_change(lower_dentry, ia);
+        rc = notify_change(lower_dentry, &lower_ia);
        mutex_unlock(&lower_dentry->d_inode->i_mutex);
 out:
        fsstack_copy_attr_all(inode, lower_inode);
        return rc;
 }
+int ecryptfs_getattr(struct vfsmount *mnt, struct dentry *dentry,
+                     struct kstat *stat)
+{
+        struct kstat lower_stat;
+        int rc;
+        rc = vfs_getattr(ecryptfs_dentry_to_lower_mnt(dentry),
+                         ecryptfs_dentry_to_lower(dentry), &lower_stat);
+        if (!rc) {
+                generic_fillattr(dentry->d_inode, stat);
+                stat->blocks = lower_stat.blocks;
+        }
+        return rc;
+}
 int
 ecryptfs_setxattr(struct dentry *dentry, const char *name, const void *value,
                  size_t size, int flags)
@@ -1100,6 +1159,7 @@ const struct inode_operations ecryptfs_dir_iops = {
 const struct inode_operations ecryptfs_main_iops = {
        .permission = ecryptfs_permission,
        .setattr = ecryptfs_setattr,
+        .getattr = ecryptfs_getattr,
        .setxattr = ecryptfs_setxattr,
        .getxattr = ecryptfs_getxattr,
        .listxattr = ecryptfs_listxattr,
diff --git a/fs/ecryptfs/main.c b/fs/ecryptfs/main.c
index 567bc4b9f70a..ea2f92101dfe 100644
--- a/fs/ecryptfs/main.c
+++ b/fs/ecryptfs/main.c
@@ -585,8 +585,8 @@ out:
 *                        with as much information as it can before needing
 *                        the lower filesystem.
 * ecryptfs_read_super(): this accesses the lower filesystem and uses
- *                        ecryptfs_interpolate to perform most of the linking
+ *                        ecryptfs_interpose to perform most of the linking
- * ecryptfs_interpolate(): links the lower filesystem into ecryptfs
+ * ecryptfs_interpose(): links the lower filesystem into ecryptfs (inode.c)
 */
 static int ecryptfs_get_sb(struct file_system_type *fs_type, int flags,
                        const char *dev_name, void *raw_data,
diff --git a/fs/eventfd.c b/fs/eventfd.c
index d26402ff06ea..7758cc382ef0 100644
--- a/fs/eventfd.c
+++ b/fs/eventfd.c
@@ -135,26 +135,71 @@ static unsigned int eventfd_poll(struct file *file, poll_table *wait)
        return events;
 }
-static ssize_t eventfd_read(struct file *file, char __user *buf, size_t count,
+static void eventfd_ctx_do_read(struct eventfd_ctx *ctx, __u64 *cnt)
-                            loff_t *ppos)
+{
+        *cnt = (ctx->flags & EFD_SEMAPHORE) ? 1 : ctx->count;
+        ctx->count -= *cnt;
+}
+/**
+ * eventfd_ctx_remove_wait_queue - Read the current counter and removes wait queue.
+ * @ctx: [in] Pointer to eventfd context.
+ * @wait: [in] Wait queue to be removed.
+ * @cnt: [out] Pointer to the 64bit conter value.
+ *
+ * Returns zero if successful, or the following error codes:
+ *
+ * -EAGAIN      : The operation would have blocked.
+ *
+ * This is used to atomically remove a wait queue entry from the eventfd wait
+ * queue head, and read/reset the counter value.
+ */
+int eventfd_ctx_remove_wait_queue(struct eventfd_ctx *ctx, wait_queue_t *wait,
+                                  __u64 *cnt)
+{
+        unsigned long flags;
+        spin_lock_irqsave(&ctx->wqh.lock, flags);
+        eventfd_ctx_do_read(ctx, cnt);
+        __remove_wait_queue(&ctx->wqh, wait);
+        if (*cnt != 0 && waitqueue_active(&ctx->wqh))
+                wake_up_locked_poll(&ctx->wqh, POLLOUT);
+        spin_unlock_irqrestore(&ctx->wqh.lock, flags);
+        return *cnt != 0 ? 0 : -EAGAIN;
+}
+EXPORT_SYMBOL_GPL(eventfd_ctx_remove_wait_queue);
+/**
+ * eventfd_ctx_read - Reads the eventfd counter or wait if it is zero.
+ * @ctx: [in] Pointer to eventfd context.
+ * @no_wait: [in] Different from zero if the operation should not block.
+ * @cnt: [out] Pointer to the 64bit conter value.
+ *
+ * Returns zero if successful, or the following error codes:
+ *
+ * -EAGAIN      : The operation would have blocked but @no_wait was nonzero.
+ * -ERESTARTSYS : A signal interrupted the wait operation.
+ *
+ * If @no_wait is zero, the function might sleep until the eventfd internal
+ * counter becomes greater than zero.
+ */
+ssize_t eventfd_ctx_read(struct eventfd_ctx *ctx, int no_wait, __u64 *cnt)
 {
-        struct eventfd_ctx *ctx = file->private_data;
        ssize_t res;
-        __u64 ucnt = 0;
        DECLARE_WAITQUEUE(wait, current);
-        if (count < sizeof(ucnt))
-                return -EINVAL;
        spin_lock_irq(&ctx->wqh.lock);
+        *cnt = 0;
        res = -EAGAIN;
        if (ctx->count > 0)
-                res = sizeof(ucnt);
+                res = 0;
-        else if (!(file->f_flags & O_NONBLOCK)) {
+        else if (!no_wait) {
                __add_wait_queue(&ctx->wqh, &wait);
-                for (res = 0;;) {
+                for (;;) {
                        set_current_state(TASK_INTERRUPTIBLE);
                        if (ctx->count > 0) {
-                                res = sizeof(ucnt);
+                                res = 0;
                                break;
                        }
                        if (signal_pending(current)) {
@@ -168,18 +213,32 @@ static ssize_t eventfd_read(struct file *file, char __user *buf, size_t count,
                __remove_wait_queue(&ctx->wqh, &wait);
                __set_current_state(TASK_RUNNING);
        }
-        if (likely(res > 0)) {
+        if (likely(res == 0)) {
-                ucnt = (ctx->flags & EFD_SEMAPHORE) ? 1 : ctx->count;
+                eventfd_ctx_do_read(ctx, cnt);
-                ctx->count -= ucnt;
                if (waitqueue_active(&ctx->wqh))
                        wake_up_locked_poll(&ctx->wqh, POLLOUT);
        }
        spin_unlock_irq(&ctx->wqh.lock);
-        if (res > 0 && put_user(ucnt, (__u64 __user *) buf))
-                return -EFAULT;
        return res;
 }
+EXPORT_SYMBOL_GPL(eventfd_ctx_read);
+static ssize_t eventfd_read(struct file *file, char __user *buf, size_t count,
+                            loff_t *ppos)
+{
+        struct eventfd_ctx *ctx = file->private_data;
+        ssize_t res;
+        __u64 cnt;
+        if (count < sizeof(cnt))
+                return -EINVAL;
+        res = eventfd_ctx_read(ctx, file->f_flags & O_NONBLOCK, &cnt);
+        if (res < 0)
+                return res;
+        return put_user(cnt, (__u64 __user *) buf) ? -EFAULT : sizeof(cnt);
+}
 static ssize_t eventfd_write(struct file *file, const char __user *buf, size_t count,
                             loff_t *ppos)
diff --git a/fs/exec.c b/fs/exec.c
index 632b02e34ec7..e95c692ef0e4 100644
--- a/fs/exec.c
+++ b/fs/exec.c
@@ -571,6 +571,9 @@ int setup_arg_pages(struct linux_binprm *bprm,
        struct vm_area_struct *prev = NULL;
        unsigned long vm_flags;
        unsigned long stack_base;
+        unsigned long stack_size;
+        unsigned long stack_expand;
+        unsigned long rlim_stack;
 #ifdef CONFIG_STACK_GROWSUP
        /* Limit stack size to 1GB */
@@ -627,10 +630,24 @@ int setup_arg_pages(struct linux_binprm *bprm,
                        goto out_unlock;
        }
+        stack_expand = EXTRA_STACK_VM_PAGES * PAGE_SIZE;
+        stack_size = vma->vm_end - vma->vm_start;
+        /*
+         * Align this down to a page boundary as expand_stack
+         * will align it up.
+         */
+        rlim_stack = rlimit(RLIMIT_STACK) & PAGE_MASK;
+        rlim_stack = min(rlim_stack, stack_size);
 #ifdef CONFIG_STACK_GROWSUP
-        stack_base = vma->vm_end + EXTRA_STACK_VM_PAGES * PAGE_SIZE;
+        if (stack_size + stack_expand > rlim_stack)
+                stack_base = vma->vm_start + rlim_stack;
+        else
+                stack_base = vma->vm_end + stack_expand;
 #else
-        stack_base = vma->vm_start - EXTRA_STACK_VM_PAGES * PAGE_SIZE;
+        if (stack_size + stack_expand > rlim_stack)
+                stack_base = vma->vm_end - rlim_stack;
+        else
+                stack_base = vma->vm_start - stack_expand;
 #endif
        ret = expand_stack(vma, stack_base);
        if (ret)
@@ -941,9 +958,7 @@ void set_task_comm(struct task_struct *tsk, char *buf)
 int flush_old_exec(struct linux_binprm * bprm)
 {
-        char * name;
+        int retval;
-        int i, ch, retval;
-        char tcomm[sizeof(current->comm)];
        /*
         * Make sure we have a private signal table and that
@@ -964,6 +979,25 @@ int flush_old_exec(struct linux_binprm * bprm)
        bprm->mm = NULL;                /* We're using it now */
+        current->flags &= ~PF_RANDOMIZE;
+        flush_thread();
+        current->personality &= ~bprm->per_clear;
+        return 0;
+out:
+        return retval;
+}
+EXPORT_SYMBOL(flush_old_exec);
+void setup_new_exec(struct linux_binprm * bprm)
+{
+        int i, ch;
+        char * name;
+        char tcomm[sizeof(current->comm)];
+        arch_pick_mmap_layout(current->mm);
        /* This is the point of no return */
        current->sas_ss_sp = current->sas_ss_size = 0;
@@ -985,9 +1019,6 @@ int flush_old_exec(struct linux_binprm * bprm)
        tcomm[i] = '\0';
        set_task_comm(current, tcomm);
-        current->flags &= ~PF_RANDOMIZE;
-        flush_thread();
        /* Set the new mm task size. We have to do that late because it may
         * depend on TIF_32BIT which is only updated in flush_thread() on
         * some architectures like powerpc
@@ -1003,8 +1034,6 @@ int flush_old_exec(struct linux_binprm * bprm)
                set_dumpable(current->mm, suid_dumpable);
        }
-        current->personality &= ~bprm->per_clear;
        /*
         * Flush performance counters when crossing a
         * security domain:
@@ -1019,14 +1048,8 @@ int flush_old_exec(struct linux_binprm * bprm)
                        
        flush_signal_handlers(current, 0);
        flush_old_files(current->files);
-        return 0;
-out:
-        return retval;
 }
+EXPORT_SYMBOL(setup_new_exec);
-EXPORT_SYMBOL(flush_old_exec);
 /*
 * Prepare credentials and lock ->cred_guard_mutex.
diff --git a/fs/exofs/inode.c b/fs/exofs/inode.c
index 698a8636d39c..2afbcebeda71 100644
--- a/fs/exofs/inode.c
+++ b/fs/exofs/inode.c
@@ -738,13 +738,28 @@ static int exofs_write_begin_export(struct file *file,
                                        fsdata);
 }
+static int exofs_write_end(struct file *file, struct address_space *mapping,
+                        loff_t pos, unsigned len, unsigned copied,
+                        struct page *page, void *fsdata)
+{
+        struct inode *inode = mapping->host;
+        /* According to comment in simple_write_end i_mutex is held */
+        loff_t i_size = inode->i_size;
+        int ret;
+        ret = simple_write_end(file, mapping,pos, len, copied, page, fsdata);
+        if (i_size != inode->i_size)
+                mark_inode_dirty(inode);
+        return ret;
+}
 const struct address_space_operations exofs_aops = {
        .readpage       = exofs_readpage,
        .readpages      = exofs_readpages,
        .writepage      = exofs_writepage,
        .writepages     = exofs_writepages,
        .write_begin    = exofs_write_begin_export,
-        .write_end      = simple_write_end,
+        .write_end      = exofs_write_end,
 };
 /******************************************************************************
diff --git a/fs/exofs/pnfs.h b/fs/exofs/pnfs.h
index 423033addd1f..c52e9888b8ab 100644
--- a/fs/exofs/pnfs.h
+++ b/fs/exofs/pnfs.h
@@ -15,13 +15,7 @@
 #ifndef __EXOFS_PNFS_H__
 #define __EXOFS_PNFS_H__
-#if defined(CONFIG_PNFS)
+#if ! defined(__PNFS_OSD_XDR_H__)
-/* FIXME: move this file to: linux/exportfs/pnfs_osd_xdr.h */
-#include "../nfs/objlayout/pnfs_osd_xdr.h"
-#else /* defined(CONFIG_PNFS) */
 enum pnfs_iomode {
        IOMODE_READ = 1,
@@ -46,6 +40,6 @@ struct pnfs_osd_data_map {
        u32     odm_raid_algorithm;
 };
-#endif /* else defined(CONFIG_PNFS) */
+#endif /* ! defined(__PNFS_OSD_XDR_H__) */
 #endif /* __EXOFS_PNFS_H__ */
diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h
index 56f9271ee8cc..874d169a193e 100644
--- a/fs/ext4/ext4.h
+++ b/fs/ext4/ext4.h
@@ -361,14 +361,11 @@ struct ext4_new_group_data {
           so set the magic i_delalloc_reserve_flag after taking the 
           inode allocation semaphore for */
 #define EXT4_GET_BLOCKS_DELALLOC_RESERVE        0x0004
-        /* Call ext4_da_update_reserve_space() after successfully 
-           allocating the blocks */
-#define EXT4_GET_BLOCKS_UPDATE_RESERVE_SPACE    0x0008
        /* caller is from the direct IO path, request to creation of an
        unitialized extents if not allocated, split the uninitialized
        extent if blocks has been preallocated already*/
-#define EXT4_GET_BLOCKS_DIO                     0x0010
+#define EXT4_GET_BLOCKS_DIO                     0x0008
-#define EXT4_GET_BLOCKS_CONVERT                 0x0020
+#define EXT4_GET_BLOCKS_CONVERT                 0x0010
 #define EXT4_GET_BLOCKS_DIO_CREATE_EXT          (EXT4_GET_BLOCKS_DIO|\
                                         EXT4_GET_BLOCKS_CREATE_UNINIT_EXT)
        /* Convert extent to initialized after direct IO complete */
@@ -699,6 +696,8 @@ struct ext4_inode_info {
        unsigned int i_reserved_meta_blocks;
        unsigned int i_allocated_meta_blocks;
        unsigned short i_delalloc_reserved_flag;
+        sector_t i_da_metadata_calc_last_lblock;
+        int i_da_metadata_calc_len;
        /* on-disk additional length */
        __u16 i_extra_isize;
@@ -1441,6 +1440,8 @@ extern int ext4_block_truncate_page(handle_t *handle,
 extern int ext4_page_mkwrite(struct vm_area_struct *vma, struct vm_fault *vmf);
 extern qsize_t *ext4_get_reserved_space(struct inode *inode);
 extern int flush_aio_dio_completed_IO(struct inode *inode);
+extern void ext4_da_update_reserve_space(struct inode *inode,
+                                        int used, int quota_claim);
 /* ioctl.c */
 extern long ext4_ioctl(struct file *, unsigned int, unsigned long);
 extern long ext4_compat_ioctl(struct file *, unsigned int, unsigned long);
diff --git a/fs/ext4/ext4_extents.h b/fs/ext4/ext4_extents.h
index 2ca686454e87..bdb6ce7e2eb4 100644
--- a/fs/ext4/ext4_extents.h
+++ b/fs/ext4/ext4_extents.h
@@ -225,7 +225,8 @@ static inline void ext4_ext_mark_initialized(struct ext4_extent *ext)
        ext->ee_len = cpu_to_le16(ext4_ext_get_actual_len(ext));
 }
-extern int ext4_ext_calc_metadata_amount(struct inode *inode, int blocks);
+extern int ext4_ext_calc_metadata_amount(struct inode *inode,
+                                         sector_t lblocks);
 extern ext4_fsblk_t ext_pblock(struct ext4_extent *ex);
 extern ext4_fsblk_t idx_pblock(struct ext4_extent_idx *);
 extern void ext4_ext_store_pblock(struct ext4_extent *, ext4_fsblk_t);
diff --git a/fs/ext4/extents.c b/fs/ext4/extents.c
index 91ae46098ea4..765a4826b118 100644
--- a/fs/ext4/extents.c
+++ b/fs/ext4/extents.c
@@ -296,29 +296,44 @@ static inline int ext4_ext_space_root_idx(struct inode *inode, int check)
 * to allocate @blocks
 * Worse case is one block per extent
 */
-int ext4_ext_calc_metadata_amount(struct inode *inode, int blocks)
+int ext4_ext_calc_metadata_amount(struct inode *inode, sector_t lblock)
 {
-        int lcap, icap, rcap, leafs, idxs, num;
+        struct ext4_inode_info *ei = EXT4_I(inode);
-        int newextents = blocks;
+        int idxs, num = 0;
-        rcap = ext4_ext_space_root_idx(inode, 0);
-        lcap = ext4_ext_space_block(inode, 0);
-        icap = ext4_ext_space_block_idx(inode, 0);
-        /* number of new leaf blocks needed */
+        idxs = ((inode->i_sb->s_blocksize - sizeof(struct ext4_extent_header))
-        num = leafs = (newextents + lcap - 1) / lcap;
+                / sizeof(struct ext4_extent_idx));
        /*
-         * Worse case, we need separate index block(s)
+         * If the new delayed allocation block is contiguous with the
-         * to link all new leaf blocks
+         * previous da block, it can share index blocks with the
+         * previous block, so we only need to allocate a new index
+         * block every idxs leaf blocks.  At ldxs**2 blocks, we need
+         * an additional index block, and at ldxs**3 blocks, yet
+         * another index blocks.
         */
-        idxs = (leafs + icap - 1) / icap;
+        if (ei->i_da_metadata_calc_len &&
-        do {
+            ei->i_da_metadata_calc_last_lblock+1 == lblock) {
-                num += idxs;
+                if ((ei->i_da_metadata_calc_len % idxs) == 0)
-                idxs = (idxs + icap - 1) / icap;
+                        num++;
-        } while (idxs > rcap);
+                if ((ei->i_da_metadata_calc_len % (idxs*idxs)) == 0)
+                        num++;
+                if ((ei->i_da_metadata_calc_len % (idxs*idxs*idxs)) == 0) {
+                        num++;
+                        ei->i_da_metadata_calc_len = 0;
+                } else
+                        ei->i_da_metadata_calc_len++;
+                ei->i_da_metadata_calc_last_lblock++;
+                return num;
+        }
-        return num;
+        /*
+         * In the worst case we need a new set of index blocks at
+         * every level of the inode's extent tree.
+         */
+        ei->i_da_metadata_calc_len = 1;
+        ei->i_da_metadata_calc_last_lblock = lblock;
+        return ext_depth(inode) + 1;
 }
 static int
@@ -3117,7 +3132,19 @@ out:
                unmap_underlying_metadata_blocks(inode->i_sb->s_bdev,
                                        newblock + max_blocks,
                                        allocated - max_blocks);
+                allocated = max_blocks;
        }
+        /*
+         * If we have done fallocate with the offset that is already
+         * delayed allocated, we would have block reservation
+         * and quota reservation done in the delayed write path.
+         * But fallocate would have already updated quota and block
+         * count for this offset. So cancel these reservation
+         */
+        if (flags & EXT4_GET_BLOCKS_DELALLOC_RESERVE)
+                ext4_da_update_reserve_space(inode, allocated, 0);
 map_out:
        set_buffer_mapped(bh_result);
 out1:
@@ -3353,9 +3380,18 @@ int ext4_ext_get_blocks(handle_t *handle, struct inode *inode,
        /* previous routine could use block we allocated */
        newblock = ext_pblock(&newex);
        allocated = ext4_ext_get_actual_len(&newex);
+        if (allocated > max_blocks)
+                allocated = max_blocks;
        set_buffer_new(bh_result);
        /*
+         * Update reserved blocks/metadata blocks after successful
+         * block allocation which had been deferred till now.
+         */
+        if (flags & EXT4_GET_BLOCKS_DELALLOC_RESERVE)
+                ext4_da_update_reserve_space(inode, allocated, 1);
+        /*
         * Cache the extent and update transaction to commit on fdatasync only
         * when it is _not_ an uninitialized extent.
         */
diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c
index 84eeb8f515a3..e11952404e02 100644
--- a/fs/ext4/inode.c
+++ b/fs/ext4/inode.c
@@ -1009,49 +1009,56 @@ qsize_t *ext4_get_reserved_space(struct inode *inode)
        return &EXT4_I(inode)->i_reserved_quota;
 }
 #endif
 /*
 * Calculate the number of metadata blocks need to reserve
- * to allocate @blocks for non extent file based file
+ * to allocate a new block at @lblocks for non extent file based file
 */
-static int ext4_indirect_calc_metadata_amount(struct inode *inode, int blocks)
+static int ext4_indirect_calc_metadata_amount(struct inode *inode,
+                                              sector_t lblock)
 {
-        int icap = EXT4_ADDR_PER_BLOCK(inode->i_sb);
+        struct ext4_inode_info *ei = EXT4_I(inode);
-        int ind_blks, dind_blks, tind_blks;
+        int dind_mask = EXT4_ADDR_PER_BLOCK(inode->i_sb) - 1;
+        int blk_bits;
-        /* number of new indirect blocks needed */
-        ind_blks = (blocks + icap - 1) / icap;
-        dind_blks = (ind_blks + icap - 1) / icap;
+        if (lblock < EXT4_NDIR_BLOCKS)
+                return 0;
-        tind_blks = 1;
+        lblock -= EXT4_NDIR_BLOCKS;
-        return ind_blks + dind_blks + tind_blks;
+        if (ei->i_da_metadata_calc_len &&
+            (lblock & dind_mask) == ei->i_da_metadata_calc_last_lblock) {
+                ei->i_da_metadata_calc_len++;
+                return 0;
+        }
+        ei->i_da_metadata_calc_last_lblock = lblock & dind_mask;
+        ei->i_da_metadata_calc_len = 1;
+        blk_bits = roundup_pow_of_two(lblock + 1);
+        return (blk_bits / EXT4_ADDR_PER_BLOCK_BITS(inode->i_sb)) + 1;
 }
 /*
 * Calculate the number of metadata blocks need to reserve
- * to allocate given number of blocks
+ * to allocate a block located at @lblock
 */
-static int ext4_calc_metadata_amount(struct inode *inode, int blocks)
+static int ext4_calc_metadata_amount(struct inode *inode, sector_t lblock)
 {
-        if (!blocks)
-                return 0;
        if (EXT4_I(inode)->i_flags & EXT4_EXTENTS_FL)
-                return ext4_ext_calc_metadata_amount(inode, blocks);
+                return ext4_ext_calc_metadata_amount(inode, lblock);
-        return ext4_indirect_calc_metadata_amount(inode, blocks);
+        return ext4_indirect_calc_metadata_amount(inode, lblock);
 }
 /*
 * Called with i_data_sem down, which is important since we can call
 * ext4_discard_preallocations() from here.
 */
-static void ext4_da_update_reserve_space(struct inode *inode, int used)
+void ext4_da_update_reserve_space(struct inode *inode,
+                                        int used, int quota_claim)
 {
        struct ext4_sb_info *sbi = EXT4_SB(inode->i_sb);
        struct ext4_inode_info *ei = EXT4_I(inode);
-        int mdb_free = 0;
+        int mdb_free = 0, allocated_meta_blocks = 0;
        spin_lock(&ei->i_block_reservation_lock);
        if (unlikely(used > ei->i_reserved_data_blocks)) {
@@ -1067,6 +1074,7 @@ static void ext4_da_update_reserve_space(struct inode *inode, int used)
        ei->i_reserved_data_blocks -= used;
        used += ei->i_allocated_meta_blocks;
        ei->i_reserved_meta_blocks -= ei->i_allocated_meta_blocks;
+        allocated_meta_blocks = ei->i_allocated_meta_blocks;
        ei->i_allocated_meta_blocks = 0;
        percpu_counter_sub(&sbi->s_dirtyblocks_counter, used);
@@ -1076,16 +1084,31 @@ static void ext4_da_update_reserve_space(struct inode *inode, int used)
                 * only when we have written all of the delayed
                 * allocation blocks.
                 */
-                mdb_free = ei->i_allocated_meta_blocks;
+                mdb_free = ei->i_reserved_meta_blocks;
+                ei->i_reserved_meta_blocks = 0;
+                ei->i_da_metadata_calc_len = 0;
                percpu_counter_sub(&sbi->s_dirtyblocks_counter, mdb_free);
-                ei->i_allocated_meta_blocks = 0;
        }
        spin_unlock(&EXT4_I(inode)->i_block_reservation_lock);
        /* Update quota subsystem */
-        vfs_dq_claim_block(inode, used);
+        if (quota_claim) {
-        if (mdb_free)
+                vfs_dq_claim_block(inode, used);
-                vfs_dq_release_reservation_block(inode, mdb_free);
+                if (mdb_free)
+                        vfs_dq_release_reservation_block(inode, mdb_free);
+        } else {
+                /*
+                 * We did fallocate with an offset that is already delayed
+                 * allocated. So on delayed allocated writeback we should
+                 * not update the quota for allocated blocks. But then
+                 * converting an fallocate region to initialized region would
+                 * have caused a metadata allocation. So claim quota for
+                 * that
+                 */
+                if (allocated_meta_blocks)
+                        vfs_dq_claim_block(inode, allocated_meta_blocks);
+                vfs_dq_release_reservation_block(inode, mdb_free + used);
+        }
        /*
         * If we have done all the pending block allocations and if
@@ -1285,18 +1308,20 @@ int ext4_get_blocks(handle_t *handle, struct inode *inode, sector_t block,
                         */
                        EXT4_I(inode)->i_state &= ~EXT4_STATE_EXT_MIGRATE;
                }
-        }
+                /*
+                 * Update reserved blocks/metadata blocks after successful
+                 * block allocation which had been deferred till now. We don't
+                 * support fallocate for non extent files. So we can update
+                 * reserve space here.
+                 */
+                if ((retval > 0) &&
+                        (flags & EXT4_GET_BLOCKS_DELALLOC_RESERVE))
+                        ext4_da_update_reserve_space(inode, retval, 1);
+        }
        if (flags & EXT4_GET_BLOCKS_DELALLOC_RESERVE)
                EXT4_I(inode)->i_delalloc_reserved_flag = 0;
-        /*
-         * Update reserved blocks/metadata blocks after successful
-         * block allocation which had been deferred till now.
-         */
-        if ((retval > 0) && (flags & EXT4_GET_BLOCKS_UPDATE_RESERVE_SPACE))
-                ext4_da_update_reserve_space(inode, retval);
        up_write((&EXT4_I(inode)->i_data_sem));
        if (retval > 0 && buffer_mapped(bh)) {
                int ret = check_block_validity(inode, "file system "
@@ -1802,12 +1827,15 @@ static int ext4_journalled_write_end(struct file *file,
        return ret ? ret : copied;
 }
-static int ext4_da_reserve_space(struct inode *inode, int nrblocks)
+/*
+ * Reserve a single block located at lblock
+ */
+static int ext4_da_reserve_space(struct inode *inode, sector_t lblock)
 {
        int retries = 0;
        struct ext4_sb_info *sbi = EXT4_SB(inode->i_sb);
        struct ext4_inode_info *ei = EXT4_I(inode);
-        unsigned long md_needed, md_reserved, total = 0;
+        unsigned long md_needed, md_reserved;
        /*
         * recalculate the amount of metadata blocks to reserve
@@ -1817,8 +1845,7 @@ static int ext4_da_reserve_space(struct inode *inode, int nrblocks)
 repeat:
        spin_lock(&ei->i_block_reservation_lock);
        md_reserved = ei->i_reserved_meta_blocks;
-        md_needed = ext4_calc_metadata_amount(inode, nrblocks);
+        md_needed = ext4_calc_metadata_amount(inode, lblock);
-        total = md_needed + nrblocks;
        spin_unlock(&ei->i_block_reservation_lock);
        /*
@@ -1826,31 +1853,19 @@ repeat:
         * later. Real quota accounting is done at pages writeout
         * time.
         */
-        if (vfs_dq_reserve_block(inode, total)) {
+        if (vfs_dq_reserve_block(inode, md_needed + 1))
-                /* 
-                 * We tend to badly over-estimate the amount of
-                 * metadata blocks which are needed, so if we have
-                 * reserved any metadata blocks, try to force out the
-                 * inode and see if we have any better luck.
-                 */
-                if (md_reserved && retries++ <= 3)
-                        goto retry;
                return -EDQUOT;
-        }
-        if (ext4_claim_free_blocks(sbi, total)) {
+        if (ext4_claim_free_blocks(sbi, md_needed + 1)) {
-                vfs_dq_release_reservation_block(inode, total);
+                vfs_dq_release_reservation_block(inode, md_needed + 1);
                if (ext4_should_retry_alloc(inode->i_sb, &retries)) {
-                retry:
-                        if (md_reserved)
-                                write_inode_now(inode, (retries == 3));
                        yield();
                        goto repeat;
                }
                return -ENOSPC;
        }
        spin_lock(&ei->i_block_reservation_lock);
-        ei->i_reserved_data_blocks += nrblocks;
+        ei->i_reserved_data_blocks++;
        ei->i_reserved_meta_blocks += md_needed;
        spin_unlock(&ei->i_block_reservation_lock);
@@ -1889,8 +1904,9 @@ static void ext4_da_release_space(struct inode *inode, int to_free)
                 * only when we have written all of the delayed
                 * allocation blocks.
                 */
-                to_free += ei->i_allocated_meta_blocks;
+                to_free += ei->i_reserved_meta_blocks;
-                ei->i_allocated_meta_blocks = 0;
+                ei->i_reserved_meta_blocks = 0;
+                ei->i_da_metadata_calc_len = 0;
        }
        /* update fs dirty blocks counter */
@@ -2203,10 +2219,10 @@ static int mpage_da_map_blocks(struct mpage_da_data *mpd)
         * variables are updated after the blocks have been allocated.
         */
        new.b_state = 0;
-        get_blocks_flags = (EXT4_GET_BLOCKS_CREATE |
+        get_blocks_flags = EXT4_GET_BLOCKS_CREATE;
-                            EXT4_GET_BLOCKS_DELALLOC_RESERVE);
        if (mpd->b_state & (1 << BH_Delay))
-                get_blocks_flags |= EXT4_GET_BLOCKS_UPDATE_RESERVE_SPACE;
+                get_blocks_flags |= EXT4_GET_BLOCKS_DELALLOC_RESERVE;
        blks = ext4_get_blocks(handle, mpd->inode, next, max_blocks,
                               &new, get_blocks_flags);
        if (blks < 0) {
@@ -2504,7 +2520,7 @@ static int ext4_da_get_block_prep(struct inode *inode, sector_t iblock,
                 * XXX: __block_prepare_write() unmaps passed block,
                 * is it OK?
                 */
-                ret = ext4_da_reserve_space(inode, 1);
+                ret = ext4_da_reserve_space(inode, iblock);
                if (ret)
                        /* not enough space to reserve */
                        return ret;
@@ -3022,7 +3038,7 @@ static int ext4_da_write_begin(struct file *file, struct address_space *mapping,
                               loff_t pos, unsigned len, unsigned flags,
                               struct page **pagep, void **fsdata)
 {
-        int ret, retries = 0;
+        int ret, retries = 0, quota_retries = 0;
        struct page *page;
        pgoff_t index;
        unsigned from, to;
@@ -3081,6 +3097,22 @@ retry:
        if (ret == -ENOSPC && ext4_should_retry_alloc(inode->i_sb, &retries))
                goto retry;
+        if ((ret == -EDQUOT) &&
+            EXT4_I(inode)->i_reserved_meta_blocks &&
+            (quota_retries++ < 3)) {
+                /*
+                 * Since we often over-estimate the number of meta
+                 * data blocks required, we may sometimes get a
+                 * spurios out of quota error even though there would
+                 * be enough space once we write the data blocks and
+                 * find out how many meta data blocks were _really_
+                 * required.  So try forcing the inode write to see if
+                 * that helps.
+                 */
+                write_inode_now(inode, (quota_retries == 3));
+                goto retry;
+        }
 out:
        return ret;
 }
diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index 7cccb35c0f4d..735c20d5fd56 100644
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -702,6 +702,7 @@ static struct inode *ext4_alloc_inode(struct super_block *sb)
        ei->i_reserved_data_blocks = 0;
        ei->i_reserved_meta_blocks = 0;
        ei->i_allocated_meta_blocks = 0;
+        ei->i_da_metadata_calc_len = 0;
        ei->i_delalloc_reserved_flag = 0;
        spin_lock_init(&(ei->i_block_reservation_lock));
 #ifdef CONFIG_QUOTA
diff --git a/fs/fcntl.c b/fs/fcntl.c
index 2cf93ec40a67..97e01dc0d95f 100644
--- a/fs/fcntl.c
+++ b/fs/fcntl.c
@@ -618,60 +618,90 @@ static DEFINE_RWLOCK(fasync_lock);
 static struct kmem_cache *fasync_cache __read_mostly;
 /*
- * fasync_helper() is used by almost all character device drivers
+ * Remove a fasync entry. If successfully removed, return
- * to set up the fasync queue. It returns negative on error, 0 if it did
+ * positive and clear the FASYNC flag. If no entry exists,
- * no changes and positive if it added/deleted the entry.
+ * do nothing and return 0.
+ *
+ * NOTE! It is very important that the FASYNC flag always
+ * match the state "is the filp on a fasync list".
+ *
+ * We always take the 'filp->f_lock', in since fasync_lock
+ * needs to be irq-safe.
 */
-int fasync_helper(int fd, struct file * filp, int on, struct fasync_struct **fapp)
+static int fasync_remove_entry(struct file *filp, struct fasync_struct **fapp)
 {
        struct fasync_struct *fa, **fp;
-        struct fasync_struct *new = NULL;
        int result = 0;
-        if (on) {
+        spin_lock(&filp->f_lock);
-                new = kmem_cache_alloc(fasync_cache, GFP_KERNEL);
+        write_lock_irq(&fasync_lock);
-                if (!new)
+        for (fp = fapp; (fa = *fp) != NULL; fp = &fa->fa_next) {
-                        return -ENOMEM;
+                if (fa->fa_file != filp)
+                        continue;
+                *fp = fa->fa_next;
+                kmem_cache_free(fasync_cache, fa);
+                filp->f_flags &= ~FASYNC;
+                result = 1;
+                break;
        }
+        write_unlock_irq(&fasync_lock);
+        spin_unlock(&filp->f_lock);
+        return result;
+}
+/*
+ * Add a fasync entry. Return negative on error, positive if
+ * added, and zero if did nothing but change an existing one.
+ *
+ * NOTE! It is very important that the FASYNC flag always
+ * match the state "is the filp on a fasync list".
+ */
+static int fasync_add_entry(int fd, struct file *filp, struct fasync_struct **fapp)
+{
+        struct fasync_struct *new, *fa, **fp;
+        int result = 0;
+        new = kmem_cache_alloc(fasync_cache, GFP_KERNEL);
+        if (!new)
+                return -ENOMEM;
-        /*
-         * We need to take f_lock first since it's not an IRQ-safe
-         * lock.
-         */
        spin_lock(&filp->f_lock);
        write_lock_irq(&fasync_lock);
        for (fp = fapp; (fa = *fp) != NULL; fp = &fa->fa_next) {
-                if (fa->fa_file == filp) {
+                if (fa->fa_file != filp)
-                        if(on) {
+                        continue;
-                                fa->fa_fd = fd;
+                fa->fa_fd = fd;
-                                kmem_cache_free(fasync_cache, new);
+                kmem_cache_free(fasync_cache, new);
-                        } else {
+                goto out;
-                                *fp = fa->fa_next;
-                                kmem_cache_free(fasync_cache, fa);
-                                result = 1;
-                        }
-                        goto out;
-                }
        }
-        if (on) {
+        new->magic = FASYNC_MAGIC;
-                new->magic = FASYNC_MAGIC;
+        new->fa_file = filp;
-                new->fa_file = filp;
+        new->fa_fd = fd;
-                new->fa_fd = fd;
+        new->fa_next = *fapp;
-                new->fa_next = *fapp;
+        *fapp = new;
-                *fapp = new;
+        result = 1;
-                result = 1;
+        filp->f_flags |= FASYNC;
-        }
 out:
-        if (on)
-                filp->f_flags |= FASYNC;
-        else
-                filp->f_flags &= ~FASYNC;
        write_unlock_irq(&fasync_lock);
        spin_unlock(&filp->f_lock);
        return result;
 }
+/*
+ * fasync_helper() is used by almost all character device drivers
+ * to set up the fasync queue, and for regular files by the file
+ * lease code. It returns negative on error, 0 if it did no changes
+ * and positive if it added/deleted the entry.
+ */
+int fasync_helper(int fd, struct file * filp, int on, struct fasync_struct **fapp)
+{
+        if (!on)
+                return fasync_remove_entry(filp, fapp);
+        return fasync_add_entry(fd, filp, fapp);
+}
 EXPORT_SYMBOL(fasync_helper);
 void __kill_fasync(struct fasync_struct *fa, int sig, int band)
diff --git a/fs/file_table.c b/fs/file_table.c
index 69652c5bd5f0..b98404b54383 100644
--- a/fs/file_table.c
+++ b/fs/file_table.c
@@ -253,6 +253,7 @@ void __fput(struct file *file)
        if (file->f_op && file->f_op->release)
                file->f_op->release(inode, file);
        security_file_free(file);
+        ima_file_free(file);
        if (unlikely(S_ISCHR(inode->i_mode) && inode->i_cdev != NULL))
                cdev_put(inode->i_cdev);
        fops_put(file->f_op);
diff --git a/fs/fs-writeback.c b/fs/fs-writeback.c
index f6c2155e0026..1a7c42c64ff4 100644
--- a/fs/fs-writeback.c
+++ b/fs/fs-writeback.c
@@ -242,6 +242,7 @@ static void bdi_sync_writeback(struct backing_dev_info *bdi,
 /**
 * bdi_start_writeback - start writeback
 * @bdi: the backing device to write from
+ * @sb: write inodes from this super_block
 * @nr_pages: the number of pages to write
 *
 * Description:
diff --git a/fs/fuse/file.c b/fs/fuse/file.c
index c18913a777ae..a9f5e137f1d3 100644
--- a/fs/fuse/file.c
+++ b/fs/fuse/file.c
@@ -828,6 +828,9 @@ static ssize_t fuse_fill_write_pages(struct fuse_req *req,
                if (!page)
                        break;
+                if (mapping_writably_mapped(mapping))
+                        flush_dcache_page(page);
                pagefault_disable();
                tmp = iov_iter_copy_from_user_atomic(page, ii, offset, bytes);
                pagefault_enable();
diff --git a/fs/gfs2/bmap.c b/fs/gfs2/bmap.c
index 6d47379e794b..583e823307ae 100644
--- a/fs/gfs2/bmap.c
+++ b/fs/gfs2/bmap.c
@@ -541,7 +541,7 @@ static int gfs2_bmap_alloc(struct inode *inode, const sector_t lblock,
                                *ptr++ = cpu_to_be64(bn++);
                        break;
                }
-        } while (state != ALLOC_DATA);
+        } while ((state != ALLOC_DATA) || !dblock);
        ip->i_height = height;
        gfs2_add_inode_blocks(&ip->i_inode, alloced);
diff --git a/fs/gfs2/file.c b/fs/gfs2/file.c
index 4eb308aa3234..a6abbae8a278 100644
--- a/fs/gfs2/file.c
+++ b/fs/gfs2/file.c
@@ -569,6 +569,40 @@ static int gfs2_fsync(struct file *file, struct dentry *dentry, int datasync)
        return ret;
 }
+/**
+ * gfs2_file_aio_write - Perform a write to a file
+ * @iocb: The io context
+ * @iov: The data to write
+ * @nr_segs: Number of @iov segments
+ * @pos: The file position
+ *
+ * We have to do a lock/unlock here to refresh the inode size for
+ * O_APPEND writes, otherwise we can land up writing at the wrong
+ * offset. There is still a race, but provided the app is using its
+ * own file locking, this will make O_APPEND work as expected.
+ *
+ */
+static ssize_t gfs2_file_aio_write(struct kiocb *iocb, const struct iovec *iov,
+                                   unsigned long nr_segs, loff_t pos)
+{
+        struct file *file = iocb->ki_filp;
+        if (file->f_flags & O_APPEND) {
+                struct dentry *dentry = file->f_dentry;
+                struct gfs2_inode *ip = GFS2_I(dentry->d_inode);
+                struct gfs2_holder gh;
+                int ret;
+                ret = gfs2_glock_nq_init(ip->i_gl, LM_ST_SHARED, 0, &gh);
+                if (ret)
+                        return ret;
+                gfs2_glock_dq_uninit(&gh);
+        }
+        return generic_file_aio_write(iocb, iov, nr_segs, pos);
+}
 #ifdef CONFIG_GFS2_FS_LOCKING_DLM
 /**
@@ -711,7 +745,7 @@ const struct file_operations gfs2_file_fops = {
        .read           = do_sync_read,
        .aio_read       = generic_file_aio_read,
        .write          = do_sync_write,
-        .aio_write      = generic_file_aio_write,
+        .aio_write      = gfs2_file_aio_write,
        .unlocked_ioctl = gfs2_ioctl,
        .mmap           = gfs2_mmap,
        .open           = gfs2_open,
@@ -741,7 +775,7 @@ const struct file_operations gfs2_file_fops_nolock = {
        .read           = do_sync_read,
        .aio_read       = generic_file_aio_read,
        .write          = do_sync_write,
-        .aio_write      = generic_file_aio_write,
+        .aio_write      = gfs2_file_aio_write,
        .unlocked_ioctl = gfs2_ioctl,
        .mmap           = gfs2_mmap,
        .open           = gfs2_open,
diff --git a/fs/gfs2/glock.c b/fs/gfs2/glock.c
index f455a03a09e2..f42663325931 100644
--- a/fs/gfs2/glock.c
+++ b/fs/gfs2/glock.c
@@ -769,6 +769,7 @@ int gfs2_glock_get(struct gfs2_sbd *sdp, u64 number,
        if (!gl)
                return -ENOMEM;
+        atomic_inc(&sdp->sd_glock_disposal);
        gl->gl_flags = 0;
        gl->gl_name = name;
        atomic_set(&gl->gl_ref, 1);
@@ -1538,6 +1539,9 @@ void gfs2_gl_hash_clear(struct gfs2_sbd *sdp)
                up_write(&gfs2_umount_flush_sem);
                msleep(10);
        }
+        flush_workqueue(glock_workqueue);
+        wait_event(sdp->sd_glock_wait, atomic_read(&sdp->sd_glock_disposal) == 0);
+        gfs2_dump_lockstate(sdp);
 }
 void gfs2_glock_finish_truncate(struct gfs2_inode *ip)
diff --git a/fs/gfs2/glock.h b/fs/gfs2/glock.h
index 13f0bd228132..c0262faf4725 100644
--- a/fs/gfs2/glock.h
+++ b/fs/gfs2/glock.h
@@ -123,7 +123,7 @@ struct lm_lockops {
        int (*lm_mount) (struct gfs2_sbd *sdp, const char *fsname);
        void (*lm_unmount) (struct gfs2_sbd *sdp);
        void (*lm_withdraw) (struct gfs2_sbd *sdp);
-        void (*lm_put_lock) (struct kmem_cache *cachep, void *gl);
+        void (*lm_put_lock) (struct kmem_cache *cachep, struct gfs2_glock *gl);
        unsigned int (*lm_lock) (struct gfs2_glock *gl,
                                 unsigned int req_state, unsigned int flags);
        void (*lm_cancel) (struct gfs2_glock *gl);
diff --git a/fs/gfs2/incore.h b/fs/gfs2/incore.h
index 4792200978c8..bc0ad158e6b4 100644
--- a/fs/gfs2/incore.h
+++ b/fs/gfs2/incore.h
@@ -544,6 +544,8 @@ struct gfs2_sbd {
        struct gfs2_holder sd_live_gh;
        struct gfs2_glock *sd_rename_gl;
        struct gfs2_glock *sd_trans_gl;
+        wait_queue_head_t sd_glock_wait;
+        atomic_t sd_glock_disposal;
        /* Inode Stuff */
diff --git a/fs/gfs2/lock_dlm.c b/fs/gfs2/lock_dlm.c
index 46df988323bc..0e5e0e7022e5 100644
--- a/fs/gfs2/lock_dlm.c
+++ b/fs/gfs2/lock_dlm.c
@@ -21,6 +21,7 @@ static void gdlm_ast(void *arg)
 {
        struct gfs2_glock *gl = arg;
        unsigned ret = gl->gl_state;
+        struct gfs2_sbd *sdp = gl->gl_sbd;
        BUG_ON(gl->gl_lksb.sb_flags & DLM_SBF_DEMOTED);
@@ -30,6 +31,8 @@ static void gdlm_ast(void *arg)
        switch (gl->gl_lksb.sb_status) {
        case -DLM_EUNLOCK: /* Unlocked, so glock can be freed */
                kmem_cache_free(gfs2_glock_cachep, gl);
+                if (atomic_dec_and_test(&sdp->sd_glock_disposal))
+                        wake_up(&sdp->sd_glock_wait);
                return;
        case -DLM_ECANCEL: /* Cancel while getting lock */
                ret |= LM_OUT_CANCELED;
@@ -164,14 +167,16 @@ static unsigned int gdlm_lock(struct gfs2_glock *gl,
        return LM_OUT_ASYNC;
 }
-static void gdlm_put_lock(struct kmem_cache *cachep, void *ptr)
+static void gdlm_put_lock(struct kmem_cache *cachep, struct gfs2_glock *gl)
 {
-        struct gfs2_glock *gl = ptr;
+        struct gfs2_sbd *sdp = gl->gl_sbd;
-        struct lm_lockstruct *ls = &gl->gl_sbd->sd_lockstruct;
+        struct lm_lockstruct *ls = &sdp->sd_lockstruct;
        int error;
        if (gl->gl_lksb.sb_lkid == 0) {
                kmem_cache_free(cachep, gl);
+                if (atomic_dec_and_test(&sdp->sd_glock_disposal))
+                        wake_up(&sdp->sd_glock_wait);
                return;
        }
diff --git a/fs/gfs2/meta_io.c b/fs/gfs2/meta_io.c
index cb8d7a93d5ec..6f68a5f18eb8 100644
--- a/fs/gfs2/meta_io.c
+++ b/fs/gfs2/meta_io.c
@@ -121,7 +121,7 @@ struct inode *gfs2_aspace_get(struct gfs2_sbd *sdp)
        if (aspace) {
                mapping_set_gfp_mask(aspace->i_mapping, GFP_NOFS);
                aspace->i_mapping->a_ops = &aspace_aops;
-                aspace->i_size = ~0ULL;
+                aspace->i_size = MAX_LFS_FILESIZE;
                ip = GFS2_I(aspace);
                clear_bit(GIF_USER, &ip->i_flags);
                insert_inode_hash(aspace);
diff --git a/fs/gfs2/ops_fstype.c b/fs/gfs2/ops_fstype.c
index edfee24f3636..a86ed6381566 100644
--- a/fs/gfs2/ops_fstype.c
+++ b/fs/gfs2/ops_fstype.c
@@ -82,6 +82,8 @@ static struct gfs2_sbd *init_sbd(struct super_block *sb)
        gfs2_tune_init(&sdp->sd_tune);
+        init_waitqueue_head(&sdp->sd_glock_wait);
+        atomic_set(&sdp->sd_glock_disposal, 0);
        spin_lock_init(&sdp->sd_statfs_spin);
        spin_lock_init(&sdp->sd_rindex_spin);
@@ -723,7 +725,7 @@ static int init_journal(struct gfs2_sbd *sdp, int undo)
                goto fail;
        }
-        error = -EINVAL;
+        error = -EUSERS;
        if (!gfs2_jindex_size(sdp)) {
                fs_err(sdp, "no journals!\n");
                goto fail_jindex;
@@ -983,9 +985,17 @@ static const match_table_t nolock_tokens = {
        { Opt_err, NULL },
 };
+static void nolock_put_lock(struct kmem_cache *cachep, struct gfs2_glock *gl)
+{
+        struct gfs2_sbd *sdp = gl->gl_sbd;
+        kmem_cache_free(cachep, gl);
+        if (atomic_dec_and_test(&sdp->sd_glock_disposal))
+                wake_up(&sdp->sd_glock_wait);
+}
 static const struct lm_lockops nolock_ops = {
        .lm_proto_name = "lock_nolock",
-        .lm_put_lock = kmem_cache_free,
+        .lm_put_lock = nolock_put_lock,
        .lm_tokens = &nolock_tokens,
 };
diff --git a/fs/gfs2/ops_inode.c b/fs/gfs2/ops_inode.c
index 247436c10deb..84350e1be66d 100644
--- a/fs/gfs2/ops_inode.c
+++ b/fs/gfs2/ops_inode.c
@@ -748,7 +748,7 @@ static int gfs2_rename(struct inode *odir, struct dentry *odentry,
        struct gfs2_rgrpd *nrgd;
        unsigned int num_gh;
        int dir_rename = 0;
-        int alloc_required;
+        int alloc_required = 0;
        unsigned int x;
        int error;
@@ -867,7 +867,9 @@ static int gfs2_rename(struct inode *odir, struct dentry *odentry,
                        goto out_gunlock;
        }
-        alloc_required = error = gfs2_diradd_alloc_required(ndir, &ndentry->d_name);
+        if (nip == NULL)
+                alloc_required = gfs2_diradd_alloc_required(ndir, &ndentry->d_name);
+        error = alloc_required;
        if (error < 0)
                goto out_gunlock;
        error = 0;
@@ -1086,7 +1088,8 @@ static void *gfs2_follow_link(struct dentry *dentry, struct nameidata *nd)
                error = vfs_follow_link(nd, buf);
                if (buf != array)
                        kfree(buf);
-        }
+        } else
+                path_put(&nd->path);
        return ERR_PTR(error);
 }
diff --git a/fs/gfs2/rgrp.c b/fs/gfs2/rgrp.c
index 0608f490c295..503b842f3ba2 100644
--- a/fs/gfs2/rgrp.c
+++ b/fs/gfs2/rgrp.c
@@ -591,11 +591,7 @@ static int gfs2_ri_update(struct gfs2_inode *ip)
        u64 rgrp_count = ip->i_disksize;
        int error;
-        if (do_div(rgrp_count, sizeof(struct gfs2_rindex))) {
+        do_div(rgrp_count, sizeof(struct gfs2_rindex));
-                gfs2_consist_inode(ip);
-                return -EIO;
-        }
        clear_rgrpdi(sdp);
        file_ra_state_init(&ra_state, inode->i_mapping);
@@ -915,7 +911,7 @@ void gfs2_rgrp_repolish_clones(struct gfs2_rgrpd *rgd)
 struct gfs2_alloc *gfs2_alloc_get(struct gfs2_inode *ip)
 {
        BUG_ON(ip->i_alloc != NULL);
-        ip->i_alloc = kzalloc(sizeof(struct gfs2_alloc), GFP_KERNEL);
+        ip->i_alloc = kzalloc(sizeof(struct gfs2_alloc), GFP_NOFS);
        return ip->i_alloc;
 }
diff --git a/fs/gfs2/super.c b/fs/gfs2/super.c
index c282ad41f3d1..b9dd3da22c0a 100644
--- a/fs/gfs2/super.c
+++ b/fs/gfs2/super.c
@@ -21,6 +21,7 @@
 #include <linux/gfs2_ondisk.h>
 #include <linux/crc32.h>
 #include <linux/time.h>
+#include <linux/wait.h>
 #include "gfs2.h"
 #include "incore.h"
diff --git a/fs/gfs2/xattr.c b/fs/gfs2/xattr.c
index 8a04108e0c22..c2ebdf2c01d4 100644
--- a/fs/gfs2/xattr.c
+++ b/fs/gfs2/xattr.c
@@ -1296,6 +1296,7 @@ fail:
 int gfs2_xattr_acl_chmod(struct gfs2_inode *ip, struct iattr *attr, char *data)
 {
+        struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);
        struct gfs2_ea_location el;
        struct buffer_head *dibh;
        int error;
@@ -1305,16 +1306,17 @@ int gfs2_xattr_acl_chmod(struct gfs2_inode *ip, struct iattr *attr, char *data)
                return error;
        if (GFS2_EA_IS_STUFFED(el.el_ea)) {
-                error = gfs2_trans_begin(GFS2_SB(&ip->i_inode), RES_DINODE + RES_EATTR, 0);
+                error = gfs2_trans_begin(sdp, RES_DINODE + RES_EATTR, 0);
-                if (error)
+                if (error == 0) {
-                        return error;
+                        gfs2_trans_add_bh(ip->i_gl, el.el_bh, 1);
+                        memcpy(GFS2_EA2DATA(el.el_ea), data,
-                gfs2_trans_add_bh(ip->i_gl, el.el_bh, 1);
+                               GFS2_EA_DATA_LEN(el.el_ea));
-                memcpy(GFS2_EA2DATA(el.el_ea), data,
+                }
-                       GFS2_EA_DATA_LEN(el.el_ea));
+        } else {
-        } else
                error = ea_acl_chmod_unstuffed(ip, el.el_ea, data);
+        }
+        brelse(el.el_bh);
        if (error)
                return error;
@@ -1327,8 +1329,7 @@ int gfs2_xattr_acl_chmod(struct gfs2_inode *ip, struct iattr *attr, char *data)
                brelse(dibh);
        }
-        gfs2_trans_end(GFS2_SB(&ip->i_inode));
+        gfs2_trans_end(sdp);
        return error;
 }
diff --git a/fs/hppfs/hppfs.c b/fs/hppfs/hppfs.c
index a5089a6dd67a..7239efc690d8 100644
--- a/fs/hppfs/hppfs.c
+++ b/fs/hppfs/hppfs.c
@@ -646,22 +646,27 @@ static const struct super_operations hppfs_sbops = {
 static int hppfs_readlink(struct dentry *dentry, char __user *buffer,
                          int buflen)
 {
-        struct dentry *proc_dentry;
+        struct dentry *proc_dentry = HPPFS_I(dentry->d_inode)->proc_dentry;
-        proc_dentry = HPPFS_I(dentry->d_inode)->proc_dentry;
        return proc_dentry->d_inode->i_op->readlink(proc_dentry, buffer,
                                                    buflen);
 }
 static void *hppfs_follow_link(struct dentry *dentry, struct nameidata *nd)
 {
-        struct dentry *proc_dentry;
+        struct dentry *proc_dentry = HPPFS_I(dentry->d_inode)->proc_dentry;
-        proc_dentry = HPPFS_I(dentry->d_inode)->proc_dentry;
        return proc_dentry->d_inode->i_op->follow_link(proc_dentry, nd);
 }
+static void hppfs_put_link(struct dentry *dentry, struct nameidata *nd,
+                           void *cookie)
+{
+        struct dentry *proc_dentry = HPPFS_I(dentry->d_inode)->proc_dentry;
+        if (proc_dentry->d_inode->i_op->put_link)
+                proc_dentry->d_inode->i_op->put_link(proc_dentry, nd, cookie);
+}
 static const struct inode_operations hppfs_dir_iops = {
        .lookup         = hppfs_lookup,
 };
@@ -669,6 +674,7 @@ static const struct inode_operations hppfs_dir_iops = {
 static const struct inode_operations hppfs_link_iops = {
        .readlink       = hppfs_readlink,
        .follow_link    = hppfs_follow_link,
+        .put_link       = hppfs_put_link,
 };
 static struct inode *get_inode(struct super_block *sb, struct dentry *dentry)
diff --git a/fs/namei.c b/fs/namei.c
index b55440baf7ab..a4855af776a8 100644
--- a/fs/namei.c
+++ b/fs/namei.c
@@ -561,6 +561,7 @@ static __always_inline int __do_follow_link(struct path *path, struct nameidata
                dget(dentry);
        }
        mntget(path->mnt);
+        nd->last_type = LAST_BIND;
        cookie = dentry->d_inode->i_op->follow_link(dentry, nd);
        error = PTR_ERR(cookie);
        if (!IS_ERR(cookie)) {
@@ -822,6 +823,17 @@ fail:
 }
 /*
+ * This is a temporary kludge to deal with "automount" symlinks; proper
+ * solution is to trigger them on follow_mount(), so that do_lookup()
+ * would DTRT.  To be killed before 2.6.34-final.
+ */
+static inline int follow_on_final(struct inode *inode, unsigned lookup_flags)
+{
+        return inode && unlikely(inode->i_op->follow_link) &&
+                ((lookup_flags & LOOKUP_FOLLOW) || S_ISDIR(inode->i_mode));
+}
+/*
 * Name resolution.
 * This is the basic name resolution function, turning a pathname into
 * the final dentry. We expect 'base' to be positive and a directory.
@@ -941,8 +953,7 @@ last_component:
                if (err)
                        break;
                inode = next.dentry->d_inode;
-                if ((lookup_flags & LOOKUP_FOLLOW)
+                if (follow_on_final(inode, lookup_flags)) {
-                    && inode && inode->i_op->follow_link) {
                        err = do_follow_link(&next, nd);
                        if (err)
                                goto return_err;
@@ -1603,11 +1614,12 @@ struct file *do_filp_open(int dfd, const char *pathname,
        struct file *filp;
        struct nameidata nd;
        int error;
-        struct path path, save;
+        struct path path;
        struct dentry *dir;
        int count = 0;
        int will_truncate;
        int flag = open_to_namei_flags(open_flag);
+        int force_reval = 0;
        /*
         * O_SYNC is implemented as __O_SYNC|O_DSYNC.  As many places only
@@ -1619,7 +1631,7 @@ struct file *do_filp_open(int dfd, const char *pathname,
                open_flag |= O_DSYNC;
        if (!acc_mode)
-                acc_mode = MAY_OPEN | ACC_MODE(flag);
+                acc_mode = MAY_OPEN | ACC_MODE(open_flag);
        /* O_TRUNC implies we need access checks for write permissions */
        if (flag & O_TRUNC)
@@ -1659,9 +1671,12 @@ struct file *do_filp_open(int dfd, const char *pathname,
        /*
         * Create - we need to know the parent.
         */
+reval:
        error = path_init(dfd, pathname, LOOKUP_PARENT, &nd);
        if (error)
                return ERR_PTR(error);
+        if (force_reval)
+                nd.flags |= LOOKUP_REVAL;
        error = path_walk(pathname, &nd);
        if (error) {
                if (nd.root.mnt)
@@ -1731,8 +1746,7 @@ do_last:
                if (nd.root.mnt)
                        path_put(&nd.root);
                if (!IS_ERR(filp)) {
-                        error = ima_path_check(&filp->f_path, filp->f_mode &
+                        error = ima_file_check(filp, acc_mode);
-                                       (MAY_READ | MAY_WRITE | MAY_EXEC));
                        if (error) {
                                fput(filp);
                                filp = ERR_PTR(error);
@@ -1792,8 +1806,7 @@ ok:
        }
        filp = nameidata_to_filp(&nd);
        if (!IS_ERR(filp)) {
-                error = ima_path_check(&filp->f_path, filp->f_mode &
+                error = ima_file_check(filp, acc_mode);
-                               (MAY_READ | MAY_WRITE | MAY_EXEC));
                if (error) {
                        fput(filp);
                        filp = ERR_PTR(error);
@@ -1853,17 +1866,7 @@ do_link:
        error = security_inode_follow_link(path.dentry, &nd);
        if (error)
                goto exit_dput;
-        save = nd.path;
-        path_get(&save);
        error = __do_follow_link(&path, &nd);
-        if (error == -ESTALE) {
-                /* nd.path had been dropped */
-                nd.path = save;
-                path_get(&nd.path);
-                nd.flags |= LOOKUP_REVAL;
-                error = __do_follow_link(&path, &nd);
-        }
-        path_put(&save);
        path_put(&path);
        if (error) {
                /* Does someone understand code flow here? Or it is only
@@ -1873,6 +1876,10 @@ do_link:
                release_open_intent(&nd);
                if (nd.root.mnt)
                        path_put(&nd.root);
+                if (error == -ESTALE && !force_reval) {
+                        force_reval = 1;
+                        goto reval;
+                }
                return ERR_PTR(error);
        }
        nd.flags &= ~LOOKUP_PARENT;
diff --git a/fs/namespace.c b/fs/namespace.c
index 7d70d63ceb29..c768f733c8d6 100644
--- a/fs/namespace.c
+++ b/fs/namespace.c
@@ -965,10 +965,12 @@ EXPORT_SYMBOL(may_umount_tree);
 int may_umount(struct vfsmount *mnt)
 {
        int ret = 1;
+        down_read(&namespace_sem);
        spin_lock(&vfsmount_lock);
        if (propagate_mount_busy(mnt, 2))
                ret = 0;
        spin_unlock(&vfsmount_lock);
+        up_read(&namespace_sem);
        return ret;
 }
@@ -1352,12 +1354,12 @@ static int attach_recursive_mnt(struct vfsmount *source_mnt,
        if (err)
                goto out_cleanup_ids;
+        spin_lock(&vfsmount_lock);
        if (IS_MNT_SHARED(dest_mnt)) {
                for (p = source_mnt; p; p = next_mnt(p, source_mnt))
                        set_mnt_shared(p);
        }
-        spin_lock(&vfsmount_lock);
        if (parent_path) {
                detach_mnt(source_mnt, parent_path);
                attach_mnt(source_mnt, path);
@@ -1534,8 +1536,12 @@ static int do_remount(struct path *path, int flags, int mnt_flags,
                err = change_mount_flags(path->mnt, flags);
        else
                err = do_remount_sb(sb, flags, data, 0);
-        if (!err)
+        if (!err) {
+                spin_lock(&vfsmount_lock);
+                mnt_flags |= path->mnt->mnt_flags & MNT_PNODE_MASK;
                path->mnt->mnt_flags = mnt_flags;
+                spin_unlock(&vfsmount_lock);
+        }
        up_write(&sb->s_umount);
        if (!err) {
                security_sb_post_remount(path->mnt, flags, data);
@@ -1665,6 +1671,8 @@ int do_add_mount(struct vfsmount *newmnt, struct path *path,
 {
        int err;
+        mnt_flags &= ~(MNT_SHARED | MNT_WRITE_HOLD);
        down_write(&namespace_sem);
        /* Something was mounted here while we slept */
        while (d_mountpoint(path->dentry) &&
diff --git a/fs/nfs/dir.c b/fs/nfs/dir.c
index 2c5ace4f00a7..3c7f03b669fb 100644
--- a/fs/nfs/dir.c
+++ b/fs/nfs/dir.c
@@ -1615,6 +1615,7 @@ static int nfs_rename(struct inode *old_dir, struct dentry *old_dentry,
                                goto out;
                        new_dentry = dentry;
+                        rehash = NULL;
                        new_inode = NULL;
                }
        }
diff --git a/fs/nfs/direct.c b/fs/nfs/direct.c
index e1d415e97849..0d289823e856 100644
--- a/fs/nfs/direct.c
+++ b/fs/nfs/direct.c
@@ -342,6 +342,7 @@ static ssize_t nfs_direct_read_schedule_segment(struct nfs_direct_req *dreq,
                data->res.fattr = &data->fattr;
                data->res.eof = 0;
                data->res.count = bytes;
+                nfs_fattr_init(&data->fattr);
                msg.rpc_argp = &data->args;
                msg.rpc_resp = &data->res;
@@ -575,6 +576,7 @@ static void nfs_direct_commit_schedule(struct nfs_direct_req *dreq)
        data->res.count = 0;
        data->res.fattr = &data->fattr;
        data->res.verf = &data->verf;
+        nfs_fattr_init(&data->fattr);
        NFS_PROTO(data->inode)->commit_setup(data, &msg);
@@ -766,6 +768,7 @@ static ssize_t nfs_direct_write_schedule_segment(struct nfs_direct_req *dreq,
                data->res.fattr = &data->fattr;
                data->res.count = bytes;
                data->res.verf = &data->verf;
+                nfs_fattr_init(&data->fattr);
                task_setup_data.task = &data->task;
                task_setup_data.callback_data = data;
diff --git a/fs/nfs/file.c b/fs/nfs/file.c
index 6b891328f332..63f2071d6445 100644
--- a/fs/nfs/file.c
+++ b/fs/nfs/file.c
@@ -486,6 +486,8 @@ static int nfs_release_page(struct page *page, gfp_t gfp)
 {
        dfprintk(PAGECACHE, "NFS: release_page(%p)\n", page);
+        if (gfp & __GFP_WAIT)
+                nfs_wb_page(page->mapping->host, page);
        /* If PagePrivate() is set, then the page is not freeable */
        if (PagePrivate(page))
                return 0;
diff --git a/fs/nfs/fscache.c b/fs/nfs/fscache.c
index fa588006588d..237874f1af23 100644
--- a/fs/nfs/fscache.c
+++ b/fs/nfs/fscache.c
@@ -354,12 +354,11 @@ void nfs_fscache_reset_inode_cookie(struct inode *inode)
 */
 int nfs_fscache_release_page(struct page *page, gfp_t gfp)
 {
-        struct nfs_inode *nfsi = NFS_I(page->mapping->host);
-        struct fscache_cookie *cookie = nfsi->fscache;
-        BUG_ON(!cookie);
        if (PageFsCache(page)) {
+                struct nfs_inode *nfsi = NFS_I(page->mapping->host);
+                struct fscache_cookie *cookie = nfsi->fscache;
+                BUG_ON(!cookie);
                dfprintk(FSCACHE, "NFS: fscache releasepage (0x%p/0x%p/0x%p)\n",
                         cookie, page, nfsi);
diff --git a/fs/nfs/inode.c b/fs/nfs/inode.c
index faa091865ad0..f141bde7756a 100644
--- a/fs/nfs/inode.c
+++ b/fs/nfs/inode.c
@@ -1261,8 +1261,10 @@ static int nfs_update_inode(struct inode *inode, struct nfs_fattr *fattr)
        if (fattr->valid & NFS_ATTR_FATTR_MODE) {
                if ((inode->i_mode & S_IALLUGO) != (fattr->mode & S_IALLUGO)) {
+                        umode_t newmode = inode->i_mode & S_IFMT;
+                        newmode |= fattr->mode & S_IALLUGO;
+                        inode->i_mode = newmode;
                        invalid |= NFS_INO_INVALID_ATTR|NFS_INO_INVALID_ACCESS|NFS_INO_INVALID_ACL;
-                        inode->i_mode = fattr->mode;
                }
        } else if (server->caps & NFS_CAP_MODE)
                invalid |= save_cache_validity & (NFS_INO_INVALID_ATTR
diff --git a/fs/nfs/mount_clnt.c b/fs/nfs/mount_clnt.c
index 0adefc40cc89..59047f8d7d72 100644
--- a/fs/nfs/mount_clnt.c
+++ b/fs/nfs/mount_clnt.c
@@ -120,7 +120,7 @@ static struct {
        { .status = MNT3ERR_INVAL,              .errno = -EINVAL,       },
        { .status = MNT3ERR_NAMETOOLONG,        .errno = -ENAMETOOLONG, },
        { .status = MNT3ERR_NOTSUPP,            .errno = -ENOTSUPP,     },
-        { .status = MNT3ERR_SERVERFAULT,        .errno = -ESERVERFAULT, },
+        { .status = MNT3ERR_SERVERFAULT,        .errno = -EREMOTEIO,    },
 };
 struct mountres {
diff --git a/fs/nfs/nfs2xdr.c b/fs/nfs/nfs2xdr.c
index 5e078b222b4e..7bc2da8efd4a 100644
--- a/fs/nfs/nfs2xdr.c
+++ b/fs/nfs/nfs2xdr.c
@@ -699,7 +699,7 @@ static struct {
        { NFSERR_BAD_COOKIE,    -EBADCOOKIE     },
        { NFSERR_NOTSUPP,       -ENOTSUPP       },
        { NFSERR_TOOSMALL,      -ETOOSMALL      },
-        { NFSERR_SERVERFAULT,   -ESERVERFAULT   },
+        { NFSERR_SERVERFAULT,   -EREMOTEIO      },
        { NFSERR_BADTYPE,       -EBADTYPE       },
        { NFSERR_JUKEBOX,       -EJUKEBOX       },
        { -1,                   -EIO            }
diff --git a/fs/nfs/nfs4_fs.h b/fs/nfs/nfs4_fs.h
index 865265bdca03..0c6fda33d66e 100644
--- a/fs/nfs/nfs4_fs.h
+++ b/fs/nfs/nfs4_fs.h
@@ -146,6 +146,7 @@ enum {
        NFS_O_RDWR_STATE,               /* OPEN stateid has read/write state */
        NFS_STATE_RECLAIM_REBOOT,       /* OPEN stateid server rebooted */
        NFS_STATE_RECLAIM_NOGRACE,      /* OPEN stateid needs to recover state */
+        NFS_STATE_POSIX_LOCKS,          /* Posix locks are supported */
 };
 struct nfs4_state {
@@ -277,6 +278,7 @@ extern void nfs4_state_set_mode_locked(struct nfs4_state *, fmode_t);
 extern void nfs4_schedule_state_recovery(struct nfs_client *);
 extern void nfs4_schedule_state_manager(struct nfs_client *);
 extern int nfs4_state_mark_reclaim_nograce(struct nfs_client *clp, struct nfs4_state *state);
+extern int nfs4_state_mark_reclaim_reboot(struct nfs_client *clp, struct nfs4_state *state);
 extern void nfs41_handle_sequence_flag_errors(struct nfs_client *clp, u32 flags);
 extern void nfs4_put_lock_state(struct nfs4_lock_state *lsp);
 extern int nfs4_set_lock_state(struct nfs4_state *state, struct file_lock *fl);
diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
index 198d51d17c13..375f0fae2c6a 100644
--- a/fs/nfs/nfs4proc.c
+++ b/fs/nfs/nfs4proc.c
@@ -249,19 +249,15 @@ static int nfs4_handle_exception(const struct nfs_server *server, int errorcode,
                        if (state == NULL)
                                break;
                        nfs4_state_mark_reclaim_nograce(clp, state);
-                case -NFS4ERR_STALE_CLIENTID:
+                        goto do_state_recovery;
                case -NFS4ERR_STALE_STATEID:
-                case -NFS4ERR_EXPIRED:
+                        if (state == NULL)
-                        nfs4_schedule_state_recovery(clp);
-                        ret = nfs4_wait_clnt_recover(clp);
-                        if (ret == 0)
-                                exception->retry = 1;
-#if !defined(CONFIG_NFS_V4_1)
-                        break;
-#else /* !defined(CONFIG_NFS_V4_1) */
-                        if (!nfs4_has_session(server->nfs_client))
                                break;
-                        /* FALLTHROUGH */
+                        nfs4_state_mark_reclaim_reboot(clp, state);
+                case -NFS4ERR_STALE_CLIENTID:
+                case -NFS4ERR_EXPIRED:
+                        goto do_state_recovery;
+#if defined(CONFIG_NFS_V4_1)
                case -NFS4ERR_BADSESSION:
                case -NFS4ERR_BADSLOT:
                case -NFS4ERR_BAD_HIGH_SLOT:
@@ -274,7 +270,7 @@ static int nfs4_handle_exception(const struct nfs_server *server, int errorcode,
                        nfs4_schedule_state_recovery(clp);
                        exception->retry = 1;
                        break;
-#endif /* !defined(CONFIG_NFS_V4_1) */
+#endif /* defined(CONFIG_NFS_V4_1) */
                case -NFS4ERR_FILE_OPEN:
                        if (exception->timeout > HZ) {
                                /* We have retried a decent amount, time to
@@ -293,6 +289,12 @@ static int nfs4_handle_exception(const struct nfs_server *server, int errorcode,
        }
        /* We failed to handle the error */
        return nfs4_map_errors(ret);
+do_state_recovery:
+        nfs4_schedule_state_recovery(clp);
+        ret = nfs4_wait_clnt_recover(clp);
+        if (ret == 0)
+                exception->retry = 1;
+        return ret;
 }
@@ -1658,6 +1660,8 @@ static int _nfs4_do_open(struct inode *dir, struct path *path, fmode_t fmode, in
        status = PTR_ERR(state);
        if (IS_ERR(state))
                goto err_opendata_put;
+        if ((opendata->o_res.rflags & NFS4_OPEN_RESULT_LOCKTYPE_POSIX) != 0)
+                set_bit(NFS_STATE_POSIX_LOCKS, &state->flags);
        nfs4_opendata_put(opendata);
        nfs4_put_state_owner(sp);
        *res = state;
@@ -3422,15 +3426,14 @@ _nfs4_async_handle_error(struct rpc_task *task, const struct nfs_server *server,
                        if (state == NULL)
                                break;
                        nfs4_state_mark_reclaim_nograce(clp, state);
-                case -NFS4ERR_STALE_CLIENTID:
+                        goto do_state_recovery;
                case -NFS4ERR_STALE_STATEID:
+                        if (state == NULL)
+                                break;
+                        nfs4_state_mark_reclaim_reboot(clp, state);
+                case -NFS4ERR_STALE_CLIENTID:
                case -NFS4ERR_EXPIRED:
-                        rpc_sleep_on(&clp->cl_rpcwaitq, task, NULL);
+                        goto do_state_recovery;
-                        nfs4_schedule_state_recovery(clp);
-                        if (test_bit(NFS4CLNT_MANAGER_RUNNING, &clp->cl_state) == 0)
-                                rpc_wake_up_queued_task(&clp->cl_rpcwaitq, task);
-                        task->tk_status = 0;
-                        return -EAGAIN;
 #if defined(CONFIG_NFS_V4_1)
                case -NFS4ERR_BADSESSION:
                case -NFS4ERR_BADSLOT:
@@ -3458,6 +3461,13 @@ _nfs4_async_handle_error(struct rpc_task *task, const struct nfs_server *server,
        }
        task->tk_status = nfs4_map_errors(task->tk_status);
        return 0;
+do_state_recovery:
+        rpc_sleep_on(&clp->cl_rpcwaitq, task, NULL);
+        nfs4_schedule_state_recovery(clp);
+        if (test_bit(NFS4CLNT_MANAGER_RUNNING, &clp->cl_state) == 0)
+                rpc_wake_up_queued_task(&clp->cl_rpcwaitq, task);
+        task->tk_status = 0;
+        return -EAGAIN;
 }
 static int
@@ -4088,6 +4098,28 @@ static const struct rpc_call_ops nfs4_recover_lock_ops = {
        .rpc_release = nfs4_lock_release,
 };
+static void nfs4_handle_setlk_error(struct nfs_server *server, struct nfs4_lock_state *lsp, int new_lock_owner, int error)
+{
+        struct nfs_client *clp = server->nfs_client;
+        struct nfs4_state *state = lsp->ls_state;
+        switch (error) {
+        case -NFS4ERR_ADMIN_REVOKED:
+        case -NFS4ERR_BAD_STATEID:
+        case -NFS4ERR_EXPIRED:
+                if (new_lock_owner != 0 ||
+                   (lsp->ls_flags & NFS_LOCK_INITIALIZED) != 0)
+                        nfs4_state_mark_reclaim_nograce(clp, state);
+                lsp->ls_seqid.flags &= ~NFS_SEQID_CONFIRMED;
+                break;
+        case -NFS4ERR_STALE_STATEID:
+                if (new_lock_owner != 0 ||
+                    (lsp->ls_flags & NFS_LOCK_INITIALIZED) != 0)
+                        nfs4_state_mark_reclaim_reboot(clp, state);
+                lsp->ls_seqid.flags &= ~NFS_SEQID_CONFIRMED;
+        };
+}
 static int _nfs4_do_setlk(struct nfs4_state *state, int cmd, struct file_lock *fl, int recovery_type)
 {
        struct nfs4_lockdata *data;
@@ -4126,6 +4158,9 @@ static int _nfs4_do_setlk(struct nfs4_state *state, int cmd, struct file_lock *f
        ret = nfs4_wait_for_completion_rpc_task(task);
        if (ret == 0) {
                ret = data->rpc_status;
+                if (ret)
+                        nfs4_handle_setlk_error(data->server, data->lsp,
+                                        data->arg.new_lock_owner, ret);
        } else
                data->cancelled = 1;
        rpc_put_task(task);
@@ -4181,8 +4216,11 @@ static int _nfs4_proc_setlk(struct nfs4_state *state, int cmd, struct file_lock
 {
        struct nfs_inode *nfsi = NFS_I(state->inode);
        unsigned char fl_flags = request->fl_flags;
-        int status;
+        int status = -ENOLCK;
+        if ((fl_flags & FL_POSIX) &&
+                        !test_bit(NFS_STATE_POSIX_LOCKS, &state->flags))
+                goto out;
        /* Is this a delegated open? */
        status = nfs4_set_lock_state(state, request);
        if (status != 0)
diff --git a/fs/nfs/nfs4state.c b/fs/nfs/nfs4state.c
index 6d263ed79e92..c1e2733f4fa4 100644
--- a/fs/nfs/nfs4state.c
+++ b/fs/nfs/nfs4state.c
@@ -901,7 +901,7 @@ void nfs4_schedule_state_recovery(struct nfs_client *clp)
        nfs4_schedule_state_manager(clp);
 }
-static int nfs4_state_mark_reclaim_reboot(struct nfs_client *clp, struct nfs4_state *state)
+int nfs4_state_mark_reclaim_reboot(struct nfs_client *clp, struct nfs4_state *state)
 {
        set_bit(NFS_STATE_RECLAIM_REBOOT, &state->flags);
diff --git a/fs/nfs/nfs4xdr.c b/fs/nfs/nfs4xdr.c
index e437fd6a819f..5cd5184b56db 100644
--- a/fs/nfs/nfs4xdr.c
+++ b/fs/nfs/nfs4xdr.c
@@ -4631,7 +4631,7 @@ static int decode_sequence(struct xdr_stream *xdr,
         * If the server returns different values for sessionID, slotID or
         * sequence number, the server is looney tunes.
         */
-        status = -ESERVERFAULT;
+        status = -EREMOTEIO;
        if (memcmp(id.data, res->sr_session->sess_id.data,
                   NFS4_MAX_SESSIONID_LEN)) {
@@ -5774,7 +5774,7 @@ static struct {
        { NFS4ERR_BAD_COOKIE,   -EBADCOOKIE     },
        { NFS4ERR_NOTSUPP,      -ENOTSUPP       },
        { NFS4ERR_TOOSMALL,     -ETOOSMALL      },
-        { NFS4ERR_SERVERFAULT,  -ESERVERFAULT   },
+        { NFS4ERR_SERVERFAULT,  -EREMOTEIO      },
        { NFS4ERR_BADTYPE,      -EBADTYPE       },
        { NFS4ERR_LOCKED,       -EAGAIN         },
        { NFS4ERR_SYMLINK,      -ELOOP          },
@@ -5801,7 +5801,7 @@ nfs4_stat_to_errno(int stat)
        }
        if (stat <= 10000 || stat > 10100) {
                /* The server is looney tunes. */
-                return -ESERVERFAULT;
+                return -EREMOTEIO;
        }
        /* If we cannot translate the error, the recovery routines should
         * handle it.
diff --git a/fs/nfs/pagelist.c b/fs/nfs/pagelist.c
index e2975939126a..a12c45b65dd4 100644
--- a/fs/nfs/pagelist.c
+++ b/fs/nfs/pagelist.c
@@ -176,6 +176,12 @@ void nfs_release_request(struct nfs_page *req)
        kref_put(&req->wb_kref, nfs_free_request);
 }
+static int nfs_wait_bit_uninterruptible(void *word)
+{
+        io_schedule();
+        return 0;
+}
 /**
 * nfs_wait_on_request - Wait for a request to complete.
 * @req: request to wait upon.
@@ -186,14 +192,9 @@ void nfs_release_request(struct nfs_page *req)
 int
 nfs_wait_on_request(struct nfs_page *req)
 {
-        int ret = 0;
+        return wait_on_bit(&req->wb_flags, PG_BUSY,
+                        nfs_wait_bit_uninterruptible,
-        if (!test_bit(PG_BUSY, &req->wb_flags))
+                        TASK_UNINTERRUPTIBLE);
-                goto out;
-        ret = out_of_line_wait_on_bit(&req->wb_flags, PG_BUSY,
-                        nfs_wait_bit_killable, TASK_KILLABLE);
-out:
-        return ret;
 }
 /**
diff --git a/fs/nfs/super.c b/fs/nfs/super.c
index ce907efc5508..f1afee4eea77 100644
--- a/fs/nfs/super.c
+++ b/fs/nfs/super.c
@@ -243,6 +243,7 @@ static int  nfs_show_stats(struct seq_file *, struct vfsmount *);
 static int nfs_get_sb(struct file_system_type *, int, const char *, void *, struct vfsmount *);
 static int nfs_xdev_get_sb(struct file_system_type *fs_type,
                int flags, const char *dev_name, void *raw_data, struct vfsmount *mnt);
+static void nfs_put_super(struct super_block *);
 static void nfs_kill_super(struct super_block *);
 static int nfs_remount(struct super_block *sb, int *flags, char *raw_data);
@@ -266,6 +267,7 @@ static const struct super_operations nfs_sops = {
        .alloc_inode    = nfs_alloc_inode,
        .destroy_inode  = nfs_destroy_inode,
        .write_inode    = nfs_write_inode,
+        .put_super      = nfs_put_super,
        .statfs         = nfs_statfs,
        .clear_inode    = nfs_clear_inode,
        .umount_begin   = nfs_umount_begin,
@@ -335,6 +337,7 @@ static const struct super_operations nfs4_sops = {
        .alloc_inode    = nfs_alloc_inode,
        .destroy_inode  = nfs_destroy_inode,
        .write_inode    = nfs_write_inode,
+        .put_super      = nfs_put_super,
        .statfs         = nfs_statfs,
        .clear_inode    = nfs4_clear_inode,
        .umount_begin   = nfs_umount_begin,
@@ -2258,6 +2261,17 @@ error_splat_super:
 }
 /*
+ * Ensure that we unregister the bdi before kill_anon_super
+ * releases the device name
+ */
+static void nfs_put_super(struct super_block *s)
+{
+        struct nfs_server *server = NFS_SB(s);
+        bdi_unregister(&server->backing_dev_info);
+}
+/*
 * Destroy an NFS2/3 superblock
 */
 static void nfs_kill_super(struct super_block *s)
@@ -2265,7 +2279,6 @@ static void nfs_kill_super(struct super_block *s)
        struct nfs_server *server = NFS_SB(s);
        kill_anon_super(s);
-        bdi_unregister(&server->backing_dev_info);
        nfs_fscache_release_super_cookie(s);
        nfs_free_server(server);
 }
diff --git a/fs/nfs/sysctl.c b/fs/nfs/sysctl.c
index 70e1fbbaaeab..ad4d2e787b20 100644
--- a/fs/nfs/sysctl.c
+++ b/fs/nfs/sysctl.c
@@ -15,8 +15,10 @@
 #include "callback.h"
+#ifdef CONFIG_NFS_V4
 static const int nfs_set_port_min = 0;
 static const int nfs_set_port_max = 65535;
+#endif
 static struct ctl_table_header *nfs_callback_sysctl_table;
 static ctl_table nfs_cb_sysctls[] = {
diff --git a/fs/nfs/write.c b/fs/nfs/write.c
index d171696017f4..d63d964a0392 100644
--- a/fs/nfs/write.c
+++ b/fs/nfs/write.c
@@ -1233,7 +1233,7 @@ int nfs_writeback_done(struct rpc_task *task, struct nfs_write_data *data)
 #if defined(CONFIG_NFS_V3) || defined(CONFIG_NFS_V4)
-void nfs_commitdata_release(void *data)
+static void nfs_commitdata_release(void *data)
 {
        struct nfs_write_data *wdata = data;
@@ -1541,6 +1541,7 @@ int nfs_wb_page_cancel(struct inode *inode, struct page *page)
                        break;
                }
                ret = nfs_wait_on_request(req);
+                nfs_release_request(req);
                if (ret < 0)
                        goto out;
        }
@@ -1597,8 +1598,7 @@ int nfs_migrate_page(struct address_space *mapping, struct page *newpage,
        struct nfs_page *req;
        int ret;
-        if (PageFsCache(page))
+        nfs_fscache_release_page(page, GFP_KERNEL);
-                nfs_fscache_release_page(page, GFP_KERNEL);
        req = nfs_find_and_lock_request(page);
        ret = PTR_ERR(req);
diff --git a/fs/nfsd/export.c b/fs/nfsd/export.c
index c487810a2366..a0c4016413f1 100644
--- a/fs/nfsd/export.c
+++ b/fs/nfsd/export.c
@@ -1316,19 +1316,11 @@ rqst_exp_parent(struct svc_rqst *rqstp, struct path *path)
 static struct svc_export *find_fsidzero_export(struct svc_rqst *rqstp)
 {
-        struct svc_export *exp;
        u32 fsidv[2];
        mk_fsid(FSID_NUM, fsidv, 0, 0, 0, NULL);
-        exp = rqst_exp_find(rqstp, FSID_NUM, fsidv);
+        return rqst_exp_find(rqstp, FSID_NUM, fsidv);
-        /*
-         * We shouldn't have accepting an nfsv4 request at all if we
-         * don't have a pseudoexport!:
-         */
-        if (IS_ERR(exp) && PTR_ERR(exp) == -ENOENT)
-                exp = ERR_PTR(-ESERVERFAULT);
-        return exp;
 }
 /*
diff --git a/fs/nfsd/vfs.c b/fs/nfsd/vfs.c
index 7c2e337d05af..8715d194561a 100644
--- a/fs/nfsd/vfs.c
+++ b/fs/nfsd/vfs.c
@@ -752,6 +752,8 @@ nfsd_open(struct svc_rqst *rqstp, struct svc_fh *fhp, int type,
                            flags, current_cred());
        if (IS_ERR(*filp))
                host_err = PTR_ERR(*filp);
+        else
+                host_err = ima_file_check(*filp, access);
 out_nfserr:
        err = nfserrno(host_err);
 out:
@@ -780,12 +782,9 @@ static inline int nfsd_dosync(struct file *filp, struct dentry *dp,
        int (*fsync) (struct file *, struct dentry *, int);
        int err;
-        err = filemap_fdatawrite(inode->i_mapping);
+        err = filemap_write_and_wait(inode->i_mapping);
        if (err == 0 && fop && (fsync = fop->fsync))
                err = fsync(filp, dp, 0);
-        if (err == 0)
-                err = filemap_fdatawait(inode->i_mapping);
        return err;
 }
@@ -2130,7 +2129,6 @@ nfsd_permission(struct svc_rqst *rqstp, struct svc_export *exp,
         */
        path.mnt = exp->ex_path.mnt;
        path.dentry = dentry;
-        err = ima_path_check(&path, acc & (MAY_READ | MAY_WRITE | MAY_EXEC));
 nfsd_out:
        return err? nfserrno(err) : 0;
 }
diff --git a/fs/nilfs2/bmap.c b/fs/nilfs2/bmap.c
index f4a14ea2ed9c..effdbdbe6c11 100644
--- a/fs/nilfs2/bmap.c
+++ b/fs/nilfs2/bmap.c
@@ -417,8 +417,8 @@ __u64 nilfs_bmap_data_get_key(const struct nilfs_bmap *bmap,
        key = page_index(bh->b_page) << (PAGE_CACHE_SHIFT -
                                         bmap->b_inode->i_blkbits);
-        for (pbh = page_buffers(bh->b_page); pbh != bh;
+        for (pbh = page_buffers(bh->b_page); pbh != bh; pbh = pbh->b_this_page)
-             pbh = pbh->b_this_page, key++);
+                key++;
        return key;
 }
diff --git a/fs/nilfs2/cpfile.c b/fs/nilfs2/cpfile.c
index d5ad54e204a5..18737818db63 100644
--- a/fs/nilfs2/cpfile.c
+++ b/fs/nilfs2/cpfile.c
@@ -328,19 +328,24 @@ int nilfs_cpfile_delete_checkpoints(struct inode *cpfile,
                        tnicps += nicps;
                        nilfs_mdt_mark_buffer_dirty(cp_bh);
                        nilfs_mdt_mark_dirty(cpfile);
-                        if (!nilfs_cpfile_is_in_first(cpfile, cno) &&
+                        if (!nilfs_cpfile_is_in_first(cpfile, cno)) {
-                            (count = nilfs_cpfile_block_sub_valid_checkpoints(
+                                count =
-                                    cpfile, cp_bh, kaddr, nicps)) == 0) {
+                                  nilfs_cpfile_block_sub_valid_checkpoints(
-                                /* make hole */
+                                                cpfile, cp_bh, kaddr, nicps);
-                                kunmap_atomic(kaddr, KM_USER0);
+                                if (count == 0) {
-                                brelse(cp_bh);
+                                        /* make hole */
-                                ret = nilfs_cpfile_delete_checkpoint_block(
+                                        kunmap_atomic(kaddr, KM_USER0);
-                                        cpfile, cno);
+                                        brelse(cp_bh);
-                                if (ret == 0)
+                                        ret =
-                                        continue;
+                                          nilfs_cpfile_delete_checkpoint_block(
-                                printk(KERN_ERR "%s: cannot delete block\n",
+                                                                   cpfile, cno);
-                                       __func__);
+                                        if (ret == 0)
-                                break;
+                                                continue;
+                                        printk(KERN_ERR
+                                               "%s: cannot delete block\n",
+                                               __func__);
+                                        break;
+                                }
                        }
                }
diff --git a/fs/nilfs2/direct.c b/fs/nilfs2/direct.c
index d369ac718277..236753df5cdf 100644
--- a/fs/nilfs2/direct.c
+++ b/fs/nilfs2/direct.c
@@ -51,11 +51,11 @@ static int nilfs_direct_lookup(const struct nilfs_bmap *bmap,
        struct nilfs_direct *direct;
        __u64 ptr;
-        direct = (struct nilfs_direct *)bmap;
+        direct = (struct nilfs_direct *)bmap;  /* XXX: use macro for level 1 */
-        if ((key > NILFS_DIRECT_KEY_MAX) ||
+        if (key > NILFS_DIRECT_KEY_MAX || level != 1)
-            (level != 1) ||     /* XXX: use macro for level 1 */
+                return -ENOENT;
-            ((ptr = nilfs_direct_get_ptr(direct, key)) ==
+        ptr = nilfs_direct_get_ptr(direct, key);
-             NILFS_BMAP_INVALID_PTR))
+        if (ptr == NILFS_BMAP_INVALID_PTR)
                return -ENOENT;
        if (ptrp != NULL)
@@ -73,9 +73,10 @@ static int nilfs_direct_lookup_contig(const struct nilfs_bmap *bmap,
        sector_t blocknr;
        int ret, cnt;
-        if (key > NILFS_DIRECT_KEY_MAX ||
+        if (key > NILFS_DIRECT_KEY_MAX)
-            (ptr = nilfs_direct_get_ptr(direct, key)) ==
+                return -ENOENT;
-            NILFS_BMAP_INVALID_PTR)
+        ptr = nilfs_direct_get_ptr(direct, key);
+        if (ptr == NILFS_BMAP_INVALID_PTR)
                return -ENOENT;
        if (NILFS_BMAP_USE_VBN(bmap)) {
diff --git a/fs/nilfs2/ioctl.c b/fs/nilfs2/ioctl.c
index f6af76042d80..d6b2b83de363 100644
--- a/fs/nilfs2/ioctl.c
+++ b/fs/nilfs2/ioctl.c
@@ -480,7 +480,7 @@ static int nilfs_ioctl_clean_segments(struct inode *inode, struct file *filp,
                                      unsigned int cmd, void __user *argp)
 {
        struct nilfs_argv argv[5];
-        const static size_t argsz[5] = {
+        static const size_t argsz[5] = {
                sizeof(struct nilfs_vdesc),
                sizeof(struct nilfs_period),
                sizeof(__u64),
diff --git a/fs/nilfs2/segment.c b/fs/nilfs2/segment.c
index 17584c524486..105b508b47a8 100644
--- a/fs/nilfs2/segment.c
+++ b/fs/nilfs2/segment.c
@@ -2829,7 +2829,7 @@ static void nilfs_segctor_destroy(struct nilfs_sc_info *sci)
                || sci->sc_seq_request != sci->sc_seq_done);
        spin_unlock(&sci->sc_state_lock);
-        if (flag || nilfs_segctor_confirm(sci))
+        if (flag || !nilfs_segctor_confirm(sci))
                nilfs_segctor_write_out(sci);
        WARN_ON(!list_empty(&sci->sc_copied_buffers));
diff --git a/fs/notify/inotify/inotify_fsnotify.c b/fs/notify/inotify/inotify_fsnotify.c
index c9ee67b442e1..1afb0a10229f 100644
--- a/fs/notify/inotify/inotify_fsnotify.c
+++ b/fs/notify/inotify/inotify_fsnotify.c
@@ -121,7 +121,7 @@ static int idr_callback(int id, void *p, void *data)
        if (warned)
                return 0;
-        warned = false;
+        warned = true;
        entry = p;
        ientry = container_of(entry, struct inotify_inode_mark_entry, fsn_entry);
diff --git a/fs/notify/inotify/inotify_user.c b/fs/notify/inotify/inotify_user.c
index 8271cf05c957..a94e8bd8eb1f 100644
--- a/fs/notify/inotify/inotify_user.c
+++ b/fs/notify/inotify/inotify_user.c
@@ -552,7 +552,7 @@ retry:
        spin_lock(&group->inotify_data.idr_lock);
        ret = idr_get_new_above(&group->inotify_data.idr, &tmp_ientry->fsn_entry,
-                                group->inotify_data.last_wd,
+                                group->inotify_data.last_wd+1,
                                &tmp_ientry->wd);
        spin_unlock(&group->inotify_data.idr_lock);
        if (ret) {
@@ -632,7 +632,7 @@ static struct fsnotify_group *inotify_new_group(struct user_struct *user, unsign
        spin_lock_init(&group->inotify_data.idr_lock);
        idr_init(&group->inotify_data.idr);
-        group->inotify_data.last_wd = 1;
+        group->inotify_data.last_wd = 0;
        group->inotify_data.user = user;
        group->inotify_data.fa = NULL;
diff --git a/fs/ocfs2/aops.c b/fs/ocfs2/aops.c
index 3dae4a13f6e4..7e9df11260f4 100644
--- a/fs/ocfs2/aops.c
+++ b/fs/ocfs2/aops.c
@@ -599,7 +599,7 @@ bail:
        return ret;
 }
-/* 
+/*
 * ocfs2_dio_end_io is called by the dio core when a dio is finished.  We're
 * particularly interested in the aio/dio case.  Like the core uses
 * i_alloc_sem, we use the rw_lock DLM lock to protect io on one node from
@@ -670,7 +670,7 @@ static ssize_t ocfs2_direct_IO(int rw,
        ret = blockdev_direct_IO_no_locking(rw, iocb, inode,
                                            inode->i_sb->s_bdev, iov, offset,
-                                            nr_segs, 
+                                            nr_segs,
                                            ocfs2_direct_IO_get_blocks,
                                            ocfs2_dio_end_io);
diff --git a/fs/ocfs2/buffer_head_io.c b/fs/ocfs2/buffer_head_io.c
index d43d34a1dd31..21c808f752d8 100644
--- a/fs/ocfs2/buffer_head_io.c
+++ b/fs/ocfs2/buffer_head_io.c
@@ -368,7 +368,7 @@ int ocfs2_read_blocks(struct ocfs2_caching_info *ci, u64 block, int nr,
        }
        ocfs2_metadata_cache_io_unlock(ci);
-        mlog(ML_BH_IO, "block=(%llu), nr=(%d), cached=%s, flags=0x%x\n", 
+        mlog(ML_BH_IO, "block=(%llu), nr=(%d), cached=%s, flags=0x%x\n",
             (unsigned long long)block, nr,
             ((flags & OCFS2_BH_IGNORE_CACHE) || ignore_cache) ? "no" : "yes",
             flags);
diff --git a/fs/ocfs2/cluster/heartbeat.c b/fs/ocfs2/cluster/heartbeat.c
index eda5b8bcddd5..5c9890006708 100644
--- a/fs/ocfs2/cluster/heartbeat.c
+++ b/fs/ocfs2/cluster/heartbeat.c
@@ -78,7 +78,7 @@ static struct o2hb_callback *hbcall_from_type(enum o2hb_callback_type type);
 unsigned int o2hb_dead_threshold = O2HB_DEFAULT_DEAD_THRESHOLD;
-/* Only sets a new threshold if there are no active regions. 
+/* Only sets a new threshold if there are no active regions.
 *
 * No locking or otherwise interesting code is required for reading
 * o2hb_dead_threshold as it can't change once regions are active and
@@ -170,7 +170,7 @@ static void o2hb_write_timeout(struct work_struct *work)
        mlog(ML_ERROR, "Heartbeat write timeout to device %s after %u "
             "milliseconds\n", reg->hr_dev_name,
-             jiffies_to_msecs(jiffies - reg->hr_last_timeout_start)); 
+             jiffies_to_msecs(jiffies - reg->hr_last_timeout_start));
        o2quo_disk_timeout();
 }
@@ -624,7 +624,7 @@ static int o2hb_check_slot(struct o2hb_region *reg,
             "seq %llu last %llu changed %u equal %u\n",
             slot->ds_node_num, (long long)slot->ds_last_generation,
             le32_to_cpu(hb_block->hb_cksum),
-             (unsigned long long)le64_to_cpu(hb_block->hb_seq), 
+             (unsigned long long)le64_to_cpu(hb_block->hb_seq),
             (unsigned long long)slot->ds_last_time, slot->ds_changed_samples,
             slot->ds_equal_samples);
diff --git a/fs/ocfs2/cluster/tcp.c b/fs/ocfs2/cluster/tcp.c
index 334f231a422c..d8d0c65ac03c 100644
--- a/fs/ocfs2/cluster/tcp.c
+++ b/fs/ocfs2/cluster/tcp.c
@@ -485,7 +485,7 @@ static void o2net_set_nn_state(struct o2net_node *nn,
        }
        if (was_valid && !valid) {
-                printk(KERN_INFO "o2net: no longer connected to "
+                printk(KERN_NOTICE "o2net: no longer connected to "
                       SC_NODEF_FMT "\n", SC_NODEF_ARGS(old_sc));
                o2net_complete_nodes_nsw(nn);
        }
@@ -493,7 +493,7 @@ static void o2net_set_nn_state(struct o2net_node *nn,
        if (!was_valid && valid) {
                o2quo_conn_up(o2net_num_from_nn(nn));
                cancel_delayed_work(&nn->nn_connect_expired);
-                printk(KERN_INFO "o2net: %s " SC_NODEF_FMT "\n",
+                printk(KERN_NOTICE "o2net: %s " SC_NODEF_FMT "\n",
                       o2nm_this_node() > sc->sc_node->nd_num ?
                                "connected to" : "accepted connection from",
                       SC_NODEF_ARGS(sc));
@@ -930,7 +930,7 @@ static void o2net_sendpage(struct o2net_sock_container *sc,
                        cond_resched();
                        continue;
                }
-                mlog(ML_ERROR, "sendpage of size %zu to " SC_NODEF_FMT 
+                mlog(ML_ERROR, "sendpage of size %zu to " SC_NODEF_FMT
                     " failed with %zd\n", size, SC_NODEF_ARGS(sc), ret);
                o2net_ensure_shutdown(nn, sc, 0);
                break;
@@ -1476,14 +1476,14 @@ static void o2net_idle_timer(unsigned long data)
        do_gettimeofday(&now);
-        printk(KERN_INFO "o2net: connection to " SC_NODEF_FMT " has been idle for %u.%u "
+        printk(KERN_NOTICE "o2net: connection to " SC_NODEF_FMT " has been idle for %u.%u "
             "seconds, shutting it down.\n", SC_NODEF_ARGS(sc),
                     o2net_idle_timeout() / 1000,
                     o2net_idle_timeout() % 1000);
        mlog(ML_NOTICE, "here are some times that might help debug the "
             "situation: (tmr %ld.%ld now %ld.%ld dr %ld.%ld adv "
             "%ld.%ld:%ld.%ld func (%08x:%u) %ld.%ld:%ld.%ld)\n",
-             sc->sc_tv_timer.tv_sec, (long) sc->sc_tv_timer.tv_usec, 
+             sc->sc_tv_timer.tv_sec, (long) sc->sc_tv_timer.tv_usec,
             now.tv_sec, (long) now.tv_usec,
             sc->sc_tv_data_ready.tv_sec, (long) sc->sc_tv_data_ready.tv_usec,
             sc->sc_tv_advance_start.tv_sec,
diff --git a/fs/ocfs2/cluster/tcp_internal.h b/fs/ocfs2/cluster/tcp_internal.h
index 8d58cfe410b1..96fa7ebc530c 100644
--- a/fs/ocfs2/cluster/tcp_internal.h
+++ b/fs/ocfs2/cluster/tcp_internal.h
@@ -32,10 +32,10 @@
 * on their number */
 #define O2NET_QUORUM_DELAY_MS   ((o2hb_dead_threshold + 2) * O2HB_REGION_TIMEOUT_MS)
-/* 
+/*
 * This version number represents quite a lot, unfortunately.  It not
 * only represents the raw network message protocol on the wire but also
- * locking semantics of the file system using the protocol.  It should 
+ * locking semantics of the file system using the protocol.  It should
 * be somewhere else, I'm sure, but right now it isn't.
 *
 * With version 11, we separate out the filesystem locking portion.  The
diff --git a/fs/ocfs2/dlm/dlmapi.h b/fs/ocfs2/dlm/dlmapi.h
index b5786a787fab..3cfa114aa391 100644
--- a/fs/ocfs2/dlm/dlmapi.h
+++ b/fs/ocfs2/dlm/dlmapi.h
@@ -95,7 +95,7 @@ const char *dlm_errname(enum dlm_status err);
                mlog(ML_ERROR, "dlm status = %s\n", dlm_errname((st))); \
 } while (0)
-#define DLM_LKSB_UNUSED1           0x01  
+#define DLM_LKSB_UNUSED1           0x01
 #define DLM_LKSB_PUT_LVB           0x02
 #define DLM_LKSB_GET_LVB           0x04
 #define DLM_LKSB_UNUSED2           0x08
diff --git a/fs/ocfs2/dlm/dlmast.c b/fs/ocfs2/dlm/dlmast.c
index 01cf8cc3d286..dccc439fa087 100644
--- a/fs/ocfs2/dlm/dlmast.c
+++ b/fs/ocfs2/dlm/dlmast.c
@@ -123,7 +123,7 @@ static void __dlm_queue_ast(struct dlm_ctxt *dlm, struct dlm_lock *lock)
                dlm_lock_put(lock);
                /* free up the reserved bast that we are cancelling.
                 * guaranteed that this will not be the last reserved
-                 * ast because *both* an ast and a bast were reserved 
+                 * ast because *both* an ast and a bast were reserved
                 * to get to this point.  the res->spinlock will not be
                 * taken here */
                dlm_lockres_release_ast(dlm, res);
diff --git a/fs/ocfs2/dlm/dlmconvert.c b/fs/ocfs2/dlm/dlmconvert.c
index ca96bce50e18..f283bce776b4 100644
--- a/fs/ocfs2/dlm/dlmconvert.c
+++ b/fs/ocfs2/dlm/dlmconvert.c
@@ -396,7 +396,7 @@ static enum dlm_status dlm_send_remote_convert_request(struct dlm_ctxt *dlm,
                        /* instead of logging the same network error over
                         * and over, sleep here and wait for the heartbeat
                         * to notice the node is dead.  times out after 5s. */
-                        dlm_wait_for_node_death(dlm, res->owner, 
+                        dlm_wait_for_node_death(dlm, res->owner,
                                                DLM_NODE_DEATH_WAIT_MAX);
                        ret = DLM_RECOVERING;
                        mlog(0, "node %u died so returning DLM_RECOVERING "
diff --git a/fs/ocfs2/dlm/dlmdebug.c b/fs/ocfs2/dlm/dlmdebug.c
index 42b0bad7a612..0cd24cf54396 100644
--- a/fs/ocfs2/dlm/dlmdebug.c
+++ b/fs/ocfs2/dlm/dlmdebug.c
@@ -102,7 +102,7 @@ void __dlm_print_one_lock_resource(struct dlm_lock_resource *res)
        assert_spin_locked(&res->spinlock);
        stringify_lockname(res->lockname.name, res->lockname.len,
-                           buf, sizeof(buf) - 1);
+                           buf, sizeof(buf));
        printk("lockres: %s, owner=%u, state=%u\n",
               buf, res->owner, res->state);
        printk("  last used: %lu, refcnt: %u, on purge list: %s\n",
diff --git a/fs/ocfs2/dlm/dlmdomain.c b/fs/ocfs2/dlm/dlmdomain.c
index 0334000676d3..988c9055fd4e 100644
--- a/fs/ocfs2/dlm/dlmdomain.c
+++ b/fs/ocfs2/dlm/dlmdomain.c
@@ -816,7 +816,7 @@ static int dlm_query_join_handler(struct o2net_msg *msg, u32 len, void *data,
        }
        /* Once the dlm ctxt is marked as leaving then we don't want
-         * to be put in someone's domain map. 
+         * to be put in someone's domain map.
         * Also, explicitly disallow joining at certain troublesome
         * times (ie. during recovery). */
        if (dlm && dlm->dlm_state != DLM_CTXT_LEAVING) {
diff --git a/fs/ocfs2/dlm/dlmlock.c b/fs/ocfs2/dlm/dlmlock.c
index 437698e9465f..733337772671 100644
--- a/fs/ocfs2/dlm/dlmlock.c
+++ b/fs/ocfs2/dlm/dlmlock.c
@@ -269,7 +269,7 @@ static enum dlm_status dlmlock_remote(struct dlm_ctxt *dlm,
                }
                dlm_revert_pending_lock(res, lock);
                dlm_lock_put(lock);
-        } else if (dlm_is_recovery_lock(res->lockname.name, 
+        } else if (dlm_is_recovery_lock(res->lockname.name,
                                        res->lockname.len)) {
                /* special case for the $RECOVERY lock.
                 * there will never be an AST delivered to put
diff --git a/fs/ocfs2/dlm/dlmmaster.c b/fs/ocfs2/dlm/dlmmaster.c
index 03ccf9a7b1f4..a659606dcb95 100644
--- a/fs/ocfs2/dlm/dlmmaster.c
+++ b/fs/ocfs2/dlm/dlmmaster.c
@@ -366,7 +366,7 @@ void dlm_hb_event_notify_attached(struct dlm_ctxt *dlm, int idx, int node_up)
        struct dlm_master_list_entry *mle;
        assert_spin_locked(&dlm->spinlock);
-        
        list_for_each_entry(mle, &dlm->mle_hb_events, hb_events) {
                if (node_up)
                        dlm_mle_node_up(dlm, mle, NULL, idx);
@@ -833,7 +833,7 @@ lookup:
                __dlm_insert_mle(dlm, mle);
                /* still holding the dlm spinlock, check the recovery map
-                 * to see if there are any nodes that still need to be 
+                 * to see if there are any nodes that still need to be
                 * considered.  these will not appear in the mle nodemap
                 * but they might own this lockres.  wait on them. */
                bit = find_next_bit(dlm->recovery_map, O2NM_MAX_NODES, 0);
@@ -883,7 +883,7 @@ redo_request:
                                msleep(500);
                        }
                        continue;
-                } 
+                }
                dlm_kick_recovery_thread(dlm);
                msleep(1000);
@@ -939,8 +939,8 @@ wait:
                     res->lockname.name, blocked);
                if (++tries > 20) {
                        mlog(ML_ERROR, "%s:%.*s: spinning on "
-                             "dlm_wait_for_lock_mastery, blocked=%d\n", 
+                             "dlm_wait_for_lock_mastery, blocked=%d\n",
-                             dlm->name, res->lockname.len, 
+                             dlm->name, res->lockname.len,
                             res->lockname.name, blocked);
                        dlm_print_one_lock_resource(res);
                        dlm_print_one_mle(mle);
@@ -1029,7 +1029,7 @@ recheck:
                ret = dlm_restart_lock_mastery(dlm, res, mle, *blocked);
                b = (mle->type == DLM_MLE_BLOCK);
                if ((*blocked && !b) || (!*blocked && b)) {
-                        mlog(0, "%s:%.*s: status change: old=%d new=%d\n", 
+                        mlog(0, "%s:%.*s: status change: old=%d new=%d\n",
                             dlm->name, res->lockname.len, res->lockname.name,
                             *blocked, b);
                        *blocked = b;
@@ -1602,7 +1602,7 @@ send_response:
                }
                mlog(0, "%u is the owner of %.*s, cleaning everyone else\n",
                             dlm->node_num, res->lockname.len, res->lockname.name);
-                ret = dlm_dispatch_assert_master(dlm, res, 0, request->node_idx, 
+                ret = dlm_dispatch_assert_master(dlm, res, 0, request->node_idx,
                                                 DLM_ASSERT_MASTER_MLE_CLEANUP);
                if (ret < 0) {
                        mlog(ML_ERROR, "failed to dispatch assert master work\n");
@@ -1701,7 +1701,7 @@ again:
                if (r & DLM_ASSERT_RESPONSE_REASSERT) {
                        mlog(0, "%.*s: node %u create mles on other "
-                             "nodes and requests a re-assert\n", 
+                             "nodes and requests a re-assert\n",
                             namelen, lockname, to);
                        reassert = 1;
                }
@@ -1812,7 +1812,7 @@ int dlm_assert_master_handler(struct o2net_msg *msg, u32 len, void *data,
                                spin_unlock(&dlm->master_lock);
                                spin_unlock(&dlm->spinlock);
                                goto done;
-                        }       
+                        }
                }
        }
        spin_unlock(&dlm->master_lock);
@@ -1883,7 +1883,7 @@ ok:
                int extra_ref = 0;
                int nn = -1;
                int rr, err = 0;
-                
                spin_lock(&mle->spinlock);
                if (mle->type == DLM_MLE_BLOCK || mle->type == DLM_MLE_MIGRATION)
                        extra_ref = 1;
@@ -1891,7 +1891,7 @@ ok:
                        /* MASTER mle: if any bits set in the response map
                         * then the calling node needs to re-assert to clear
                         * up nodes that this node contacted */
-                        while ((nn = find_next_bit (mle->response_map, O2NM_MAX_NODES, 
+                        while ((nn = find_next_bit (mle->response_map, O2NM_MAX_NODES,
                                                    nn+1)) < O2NM_MAX_NODES) {
                                if (nn != dlm->node_num && nn != assert->node_idx)
                                        master_request = 1;
@@ -2002,7 +2002,7 @@ kill:
        __dlm_print_one_lock_resource(res);
        spin_unlock(&res->spinlock);
        spin_unlock(&dlm->spinlock);
-        *ret_data = (void *)res; 
+        *ret_data = (void *)res;
        dlm_put(dlm);
        return -EINVAL;
 }
@@ -2040,10 +2040,10 @@ int dlm_dispatch_assert_master(struct dlm_ctxt *dlm,
        item->u.am.request_from = request_from;
        item->u.am.flags = flags;
-        if (ignore_higher) 
+        if (ignore_higher)
-                mlog(0, "IGNORE HIGHER: %.*s\n", res->lockname.len, 
+                mlog(0, "IGNORE HIGHER: %.*s\n", res->lockname.len,
                     res->lockname.name);
-                
        spin_lock(&dlm->work_lock);
        list_add_tail(&item->list, &dlm->work_list);
        spin_unlock(&dlm->work_lock);
@@ -2133,7 +2133,7 @@ put:
 * think that $RECOVERY is currently mastered by a dead node.  If so,
 * we wait a short time to allow that node to get notified by its own
 * heartbeat stack, then check again.  All $RECOVERY lock resources
- * mastered by dead nodes are purged when the hearbeat callback is 
+ * mastered by dead nodes are purged when the hearbeat callback is
 * fired, so we can know for sure that it is safe to continue once
 * the node returns a live node or no node.  */
 static int dlm_pre_master_reco_lockres(struct dlm_ctxt *dlm,
@@ -2174,7 +2174,7 @@ static int dlm_pre_master_reco_lockres(struct dlm_ctxt *dlm,
                                ret = -EAGAIN;
                        }
                        spin_unlock(&dlm->spinlock);
-                        mlog(0, "%s: reco lock master is %u\n", dlm->name, 
+                        mlog(0, "%s: reco lock master is %u\n", dlm->name,
                             master);
                        break;
                }
@@ -2602,7 +2602,7 @@ fail:
                        mlog(0, "%s:%.*s: timed out during migration\n",
                             dlm->name, res->lockname.len, res->lockname.name);
-                        /* avoid hang during shutdown when migrating lockres 
+                        /* avoid hang during shutdown when migrating lockres
                         * to a node which also goes down */
                        if (dlm_is_node_dead(dlm, target)) {
                                mlog(0, "%s:%.*s: expected migration "
@@ -2738,7 +2738,7 @@ static int dlm_migration_can_proceed(struct dlm_ctxt *dlm,
        can_proceed = !!(res->state & DLM_LOCK_RES_MIGRATING);
        spin_unlock(&res->spinlock);
-        /* target has died, so make the caller break out of the 
+        /* target has died, so make the caller break out of the
         * wait_event, but caller must recheck the domain_map */
        spin_lock(&dlm->spinlock);
        if (!test_bit(mig_target, dlm->domain_map))
diff --git a/fs/ocfs2/dlm/dlmrecovery.c b/fs/ocfs2/dlm/dlmrecovery.c
index 2f9e4e19a4f2..344bcf90cbf4 100644
--- a/fs/ocfs2/dlm/dlmrecovery.c
+++ b/fs/ocfs2/dlm/dlmrecovery.c
@@ -1050,7 +1050,7 @@ static void dlm_move_reco_locks_to_list(struct dlm_ctxt *dlm,
                                if (lock->ml.node == dead_node) {
                                        mlog(0, "AHA! there was "
                                             "a $RECOVERY lock for dead "
-                                             "node %u (%s)!\n", 
+                                             "node %u (%s)!\n",
                                             dead_node, dlm->name);
                                        list_del_init(&lock->list);
                                        dlm_lock_put(lock);
@@ -1164,6 +1164,39 @@ static void dlm_init_migratable_lockres(struct dlm_migratable_lockres *mres,
        mres->master = master;
 }
+static void dlm_prepare_lvb_for_migration(struct dlm_lock *lock,
+                                          struct dlm_migratable_lockres *mres,
+                                          int queue)
+{
+        if (!lock->lksb)
+               return;
+        /* Ignore lvb in all locks in the blocked list */
+        if (queue == DLM_BLOCKED_LIST)
+                return;
+        /* Only consider lvbs in locks with granted EX or PR lock levels */
+        if (lock->ml.type != LKM_EXMODE && lock->ml.type != LKM_PRMODE)
+                return;
+        if (dlm_lvb_is_empty(mres->lvb)) {
+                memcpy(mres->lvb, lock->lksb->lvb, DLM_LVB_LEN);
+                return;
+        }
+        /* Ensure the lvb copied for migration matches in other valid locks */
+        if (!memcmp(mres->lvb, lock->lksb->lvb, DLM_LVB_LEN))
+                return;
+        mlog(ML_ERROR, "Mismatched lvb in lock cookie=%u:%llu, name=%.*s, "
+             "node=%u\n",
+             dlm_get_lock_cookie_node(be64_to_cpu(lock->ml.cookie)),
+             dlm_get_lock_cookie_seq(be64_to_cpu(lock->ml.cookie)),
+             lock->lockres->lockname.len, lock->lockres->lockname.name,
+             lock->ml.node);
+        dlm_print_one_lock_resource(lock->lockres);
+        BUG();
+}
 /* returns 1 if this lock fills the network structure,
 * 0 otherwise */
@@ -1181,20 +1214,7 @@ static int dlm_add_lock_to_array(struct dlm_lock *lock,
        ml->list = queue;
        if (lock->lksb) {
                ml->flags = lock->lksb->flags;
-                /* send our current lvb */
+                dlm_prepare_lvb_for_migration(lock, mres, queue);
-                if (ml->type == LKM_EXMODE ||
-                    ml->type == LKM_PRMODE) {
-                        /* if it is already set, this had better be a PR
-                         * and it has to match */
-                        if (!dlm_lvb_is_empty(mres->lvb) &&
-                            (ml->type == LKM_EXMODE ||
-                             memcmp(mres->lvb, lock->lksb->lvb, DLM_LVB_LEN))) {
-                                mlog(ML_ERROR, "mismatched lvbs!\n");
-                                dlm_print_one_lock_resource(lock->lockres);
-                                BUG();
-                        }
-                        memcpy(mres->lvb, lock->lksb->lvb, DLM_LVB_LEN);
-                }
        }
        ml->node = lock->ml.node;
        mres->num_locks++;
@@ -1730,6 +1750,7 @@ static int dlm_process_recovery_data(struct dlm_ctxt *dlm,
        struct dlm_lock *lock = NULL;
        u8 from = O2NM_MAX_NODES;
        unsigned int added = 0;
+        __be64 c;
        mlog(0, "running %d locks for this lockres\n", mres->num_locks);
        for (i=0; i<mres->num_locks; i++) {
@@ -1777,19 +1798,48 @@ static int dlm_process_recovery_data(struct dlm_ctxt *dlm,
                        /* lock is always created locally first, and
                         * destroyed locally last.  it must be on the list */
                        if (!lock) {
-                                __be64 c = ml->cookie;
+                                c = ml->cookie;
-                                mlog(ML_ERROR, "could not find local lock "
+                                mlog(ML_ERROR, "Could not find local lock "
-                                               "with cookie %u:%llu!\n",
+                                               "with cookie %u:%llu, node %u, "
+                                               "list %u, flags 0x%x, type %d, "
+                                               "conv %d, highest blocked %d\n",
                                     dlm_get_lock_cookie_node(be64_to_cpu(c)),
-                                     dlm_get_lock_cookie_seq(be64_to_cpu(c)));
+                                     dlm_get_lock_cookie_seq(be64_to_cpu(c)),
+                                     ml->node, ml->list, ml->flags, ml->type,
+                                     ml->convert_type, ml->highest_blocked);
+                                __dlm_print_one_lock_resource(res);
+                                BUG();
+                        }
+                        if (lock->ml.node != ml->node) {
+                                c = lock->ml.cookie;
+                                mlog(ML_ERROR, "Mismatched node# in lock "
+                                     "cookie %u:%llu, name %.*s, node %u\n",
+                                     dlm_get_lock_cookie_node(be64_to_cpu(c)),
+                                     dlm_get_lock_cookie_seq(be64_to_cpu(c)),
+                                     res->lockname.len, res->lockname.name,
+                                     lock->ml.node);
+                                c = ml->cookie;
+                                mlog(ML_ERROR, "Migrate lock cookie %u:%llu, "
+                                     "node %u, list %u, flags 0x%x, type %d, "
+                                     "conv %d, highest blocked %d\n",
+                                     dlm_get_lock_cookie_node(be64_to_cpu(c)),
+                                     dlm_get_lock_cookie_seq(be64_to_cpu(c)),
+                                     ml->node, ml->list, ml->flags, ml->type,
+                                     ml->convert_type, ml->highest_blocked);
                                __dlm_print_one_lock_resource(res);
                                BUG();
                        }
-                        BUG_ON(lock->ml.node != ml->node);
                        if (tmpq != queue) {
-                                mlog(0, "lock was on %u instead of %u for %.*s\n",
+                                c = ml->cookie;
-                                     j, ml->list, res->lockname.len, res->lockname.name);
+                                mlog(0, "Lock cookie %u:%llu was on list %u "
+                                     "instead of list %u for %.*s\n",
+                                     dlm_get_lock_cookie_node(be64_to_cpu(c)),
+                                     dlm_get_lock_cookie_seq(be64_to_cpu(c)),
+                                     j, ml->list, res->lockname.len,
+                                     res->lockname.name);
+                                __dlm_print_one_lock_resource(res);
                                spin_unlock(&res->spinlock);
                                continue;
                        }
@@ -1839,7 +1889,7 @@ static int dlm_process_recovery_data(struct dlm_ctxt *dlm,
                                 * the lvb. */
                                memcpy(res->lvb, mres->lvb, DLM_LVB_LEN);
                        } else {
-                                /* otherwise, the node is sending its 
+                                /* otherwise, the node is sending its
                                 * most recent valid lvb info */
                                BUG_ON(ml->type != LKM_EXMODE &&
                                       ml->type != LKM_PRMODE);
@@ -1886,7 +1936,7 @@ skip_lvb:
                spin_lock(&res->spinlock);
                list_for_each_entry(lock, queue, list) {
                        if (lock->ml.cookie == ml->cookie) {
-                                __be64 c = lock->ml.cookie;
+                                c = lock->ml.cookie;
                                mlog(ML_ERROR, "%s:%.*s: %u:%llu: lock already "
                                     "exists on this lockres!\n", dlm->name,
                                     res->lockname.len, res->lockname.name,
@@ -2114,7 +2164,7 @@ static void dlm_revalidate_lvb(struct dlm_ctxt *dlm,
        assert_spin_locked(&res->spinlock);
        if (res->owner == dlm->node_num)
-                /* if this node owned the lockres, and if the dead node 
+                /* if this node owned the lockres, and if the dead node
                 * had an EX when he died, blank out the lvb */
                search_node = dead_node;
        else {
@@ -2152,7 +2202,7 @@ static void dlm_free_dead_locks(struct dlm_ctxt *dlm,
        /* this node is the lockres master:
         * 1) remove any stale locks for the dead node
-         * 2) if the dead node had an EX when he died, blank out the lvb 
+         * 2) if the dead node had an EX when he died, blank out the lvb
         */
        assert_spin_locked(&dlm->spinlock);
        assert_spin_locked(&res->spinlock);
@@ -2193,7 +2243,12 @@ static void dlm_free_dead_locks(struct dlm_ctxt *dlm,
                mlog(0, "%s:%.*s: freed %u locks for dead node %u, "
                     "dropping ref from lockres\n", dlm->name,
                     res->lockname.len, res->lockname.name, freed, dead_node);
-                BUG_ON(!test_bit(dead_node, res->refmap));
+                if(!test_bit(dead_node, res->refmap)) {
+                        mlog(ML_ERROR, "%s:%.*s: freed %u locks for dead node %u, "
+                             "but ref was not set\n", dlm->name,
+                             res->lockname.len, res->lockname.name, freed, dead_node);
+                        __dlm_print_one_lock_resource(res);
+                }
                dlm_lockres_clear_refmap_bit(dead_node, res);
        } else if (test_bit(dead_node, res->refmap)) {
                mlog(0, "%s:%.*s: dead node %u had a ref, but had "
@@ -2260,7 +2315,7 @@ static void dlm_do_local_recovery_cleanup(struct dlm_ctxt *dlm, u8 dead_node)
                                }
                                spin_unlock(&res->spinlock);
                                continue;
-                        }                       
+                        }
                        spin_lock(&res->spinlock);
                        /* zero the lvb if necessary */
                        dlm_revalidate_lvb(dlm, res, dead_node);
@@ -2411,7 +2466,7 @@ static void dlm_reco_unlock_ast(void *astdata, enum dlm_status st)
 * this function on each node racing to become the recovery
 * master will not stop attempting this until either:
 * a) this node gets the EX (and becomes the recovery master),
- * or b) dlm->reco.new_master gets set to some nodenum 
+ * or b) dlm->reco.new_master gets set to some nodenum
 * != O2NM_INVALID_NODE_NUM (another node will do the reco).
 * so each time a recovery master is needed, the entire cluster
 * will sync at this point.  if the new master dies, that will
@@ -2424,7 +2479,7 @@ static int dlm_pick_recovery_master(struct dlm_ctxt *dlm)
        mlog(0, "starting recovery of %s at %lu, dead=%u, this=%u\n",
             dlm->name, jiffies, dlm->reco.dead_node, dlm->node_num);
-again:  
+again:
        memset(&lksb, 0, sizeof(lksb));
        ret = dlmlock(dlm, LKM_EXMODE, &lksb, LKM_NOQUEUE|LKM_RECOVERY,
@@ -2437,8 +2492,8 @@ again:
        if (ret == DLM_NORMAL) {
                mlog(0, "dlm=%s dlmlock says I got it (this=%u)\n",
                     dlm->name, dlm->node_num);
-                
-                /* got the EX lock.  check to see if another node 
+                /* got the EX lock.  check to see if another node
                 * just became the reco master */
                if (dlm_reco_master_ready(dlm)) {
                        mlog(0, "%s: got reco EX lock, but %u will "
@@ -2451,12 +2506,12 @@ again:
                        /* see if recovery was already finished elsewhere */
                        spin_lock(&dlm->spinlock);
                        if (dlm->reco.dead_node == O2NM_INVALID_NODE_NUM) {
-                                status = -EINVAL;       
+                                status = -EINVAL;
                                mlog(0, "%s: got reco EX lock, but "
                                     "node got recovered already\n", dlm->name);
                                if (dlm->reco.new_master != O2NM_INVALID_NODE_NUM) {
                                        mlog(ML_ERROR, "%s: new master is %u "
-                                             "but no dead node!\n", 
+                                             "but no dead node!\n",
                                             dlm->name, dlm->reco.new_master);
                                        BUG();
                                }
@@ -2468,7 +2523,7 @@ again:
                 * set the master and send the messages to begin recovery */
                if (!status) {
                        mlog(0, "%s: dead=%u, this=%u, sending "
-                             "begin_reco now\n", dlm->name, 
+                             "begin_reco now\n", dlm->name,
                             dlm->reco.dead_node, dlm->node_num);
                        status = dlm_send_begin_reco_message(dlm,
                                      dlm->reco.dead_node);
@@ -2501,7 +2556,7 @@ again:
                mlog(0, "dlm=%s dlmlock says another node got it (this=%u)\n",
                     dlm->name, dlm->node_num);
                /* another node is master. wait on
-                 * reco.new_master != O2NM_INVALID_NODE_NUM 
+                 * reco.new_master != O2NM_INVALID_NODE_NUM
                 * for at most one second */
                wait_event_timeout(dlm->dlm_reco_thread_wq,
                                         dlm_reco_master_ready(dlm),
@@ -2589,7 +2644,13 @@ retry:
                             "begin reco msg (%d)\n", dlm->name, nodenum, ret);
                        ret = 0;
                }
-                if (ret == -EAGAIN) {
+                /*
+                 * Prior to commit aad1b15310b9bcd59fa81ab8f2b1513b59553ea8,
+                 * dlm_begin_reco_handler() returned EAGAIN and not -EAGAIN.
+                 * We are handling both for compatibility reasons.
+                 */
+                if (ret == -EAGAIN || ret == EAGAIN) {
                        mlog(0, "%s: trying to start recovery of node "
                             "%u, but node %u is waiting for last recovery "
                             "to complete, backoff for a bit\n", dlm->name,
@@ -2599,7 +2660,7 @@ retry:
                }
                if (ret < 0) {
                        struct dlm_lock_resource *res;
-                        /* this is now a serious problem, possibly ENOMEM 
+                        /* this is now a serious problem, possibly ENOMEM
                         * in the network stack.  must retry */
                        mlog_errno(ret);
                        mlog(ML_ERROR, "begin reco of dlm %s to node %u "
@@ -2612,7 +2673,7 @@ retry:
                        } else {
                                mlog(ML_ERROR, "recovery lock not found\n");
                        }
-                        /* sleep for a bit in hopes that we can avoid 
+                        /* sleep for a bit in hopes that we can avoid
                         * another ENOMEM */
                        msleep(100);
                        goto retry;
@@ -2664,7 +2725,7 @@ int dlm_begin_reco_handler(struct o2net_msg *msg, u32 len, void *data,
        }
        if (dlm->reco.dead_node != O2NM_INVALID_NODE_NUM) {
                mlog(ML_NOTICE, "%s: dead_node previously set to %u, "
-                     "node %u changing it to %u\n", dlm->name, 
+                     "node %u changing it to %u\n", dlm->name,
                     dlm->reco.dead_node, br->node_idx, br->dead_node);
        }
        dlm_set_reco_master(dlm, br->node_idx);
@@ -2730,8 +2791,8 @@ stage2:
                if (ret < 0) {
                        mlog_errno(ret);
                        if (dlm_is_host_down(ret)) {
-                                /* this has no effect on this recovery 
+                                /* this has no effect on this recovery
-                                 * session, so set the status to zero to 
+                                 * session, so set the status to zero to
                                 * finish out the last recovery */
                                mlog(ML_ERROR, "node %u went down after this "
                                     "node finished recovery.\n", nodenum);
@@ -2768,7 +2829,7 @@ int dlm_finalize_reco_handler(struct o2net_msg *msg, u32 len, void *data,
        mlog(0, "%s: node %u finalizing recovery stage%d of "
             "node %u (%u:%u)\n", dlm->name, fr->node_idx, stage,
             fr->dead_node, dlm->reco.dead_node, dlm->reco.new_master);
- 
        spin_lock(&dlm->spinlock);
        if (dlm->reco.new_master != fr->node_idx) {
diff --git a/fs/ocfs2/dlm/dlmunlock.c b/fs/ocfs2/dlm/dlmunlock.c
index 00f53b2aea76..49e29ecd0201 100644
--- a/fs/ocfs2/dlm/dlmunlock.c
+++ b/fs/ocfs2/dlm/dlmunlock.c
@@ -190,8 +190,8 @@ static enum dlm_status dlmunlock_common(struct dlm_ctxt *dlm,
                        actions &= ~(DLM_UNLOCK_REMOVE_LOCK|
                                     DLM_UNLOCK_REGRANT_LOCK|
                                     DLM_UNLOCK_CLEAR_CONVERT_TYPE);
-                } else if (status == DLM_RECOVERING || 
+                } else if (status == DLM_RECOVERING ||
-                           status == DLM_MIGRATING || 
+                           status == DLM_MIGRATING ||
                           status == DLM_FORWARD) {
                        /* must clear the actions because this unlock
                         * is about to be retried.  cannot free or do
@@ -661,14 +661,14 @@ retry:
        if (call_ast) {
                mlog(0, "calling unlockast(%p, %d)\n", data, status);
                if (is_master) {
-                        /* it is possible that there is one last bast 
+                        /* it is possible that there is one last bast
                         * pending.  make sure it is flushed, then
                         * call the unlockast.
                         * not an issue if this is a mastered remotely,
                         * since this lock has been removed from the
                         * lockres queues and cannot be found. */
                        dlm_kick_thread(dlm, NULL);
-                        wait_event(dlm->ast_wq, 
+                        wait_event(dlm->ast_wq,
                                   dlm_lock_basts_flushed(dlm, lock));
                }
                (*unlockast)(data, status);
diff --git a/fs/ocfs2/dlmglue.c b/fs/ocfs2/dlmglue.c
index c5e4a49e3a12..e044019cb3b1 100644
--- a/fs/ocfs2/dlmglue.c
+++ b/fs/ocfs2/dlmglue.c
@@ -875,6 +875,14 @@ static inline void ocfs2_generic_handle_convert_action(struct ocfs2_lock_res *lo
                lockres_or_flags(lockres, OCFS2_LOCK_NEEDS_REFRESH);
        lockres->l_level = lockres->l_requested;
+        /*
+         * We set the OCFS2_LOCK_UPCONVERT_FINISHING flag before clearing
+         * the OCFS2_LOCK_BUSY flag to prevent the dc thread from
+         * downconverting the lock before the upconvert has fully completed.
+         */
+        lockres_or_flags(lockres, OCFS2_LOCK_UPCONVERT_FINISHING);
        lockres_clear_flags(lockres, OCFS2_LOCK_BUSY);
        mlog_exit_void();
@@ -907,8 +915,6 @@ static int ocfs2_generic_handle_bast(struct ocfs2_lock_res *lockres,
        assert_spin_locked(&lockres->l_lock);
-        lockres_or_flags(lockres, OCFS2_LOCK_BLOCKED);
        if (level > lockres->l_blocking) {
                /* only schedule a downconvert if we haven't already scheduled
                 * one that goes low enough to satisfy the level we're
@@ -921,6 +927,9 @@ static int ocfs2_generic_handle_bast(struct ocfs2_lock_res *lockres,
                lockres->l_blocking = level;
        }
+        if (needs_downconvert)
+                lockres_or_flags(lockres, OCFS2_LOCK_BLOCKED);
        mlog_exit(needs_downconvert);
        return needs_downconvert;
 }
@@ -1133,6 +1142,7 @@ static inline void ocfs2_recover_from_dlm_error(struct ocfs2_lock_res *lockres,
        mlog_entry_void();
        spin_lock_irqsave(&lockres->l_lock, flags);
        lockres_clear_flags(lockres, OCFS2_LOCK_BUSY);
+        lockres_clear_flags(lockres, OCFS2_LOCK_UPCONVERT_FINISHING);
        if (convert)
                lockres->l_action = OCFS2_AST_INVALID;
        else
@@ -1323,13 +1333,13 @@ static int __ocfs2_cluster_lock(struct ocfs2_super *osb,
 again:
        wait = 0;
+        spin_lock_irqsave(&lockres->l_lock, flags);
        if (catch_signals && signal_pending(current)) {
                ret = -ERESTARTSYS;
-                goto out;
+                goto unlock;
        }
-        spin_lock_irqsave(&lockres->l_lock, flags);
        mlog_bug_on_msg(lockres->l_flags & OCFS2_LOCK_FREEING,
                        "Cluster lock called on freeing lockres %s! flags "
                        "0x%lx\n", lockres->l_name, lockres->l_flags);
@@ -1346,6 +1356,25 @@ again:
                goto unlock;
        }
+        if (lockres->l_flags & OCFS2_LOCK_UPCONVERT_FINISHING) {
+                /*
+                 * We've upconverted. If the lock now has a level we can
+                 * work with, we take it. If, however, the lock is not at the
+                 * required level, we go thru the full cycle. One way this could
+                 * happen is if a process requesting an upconvert to PR is
+                 * closely followed by another requesting upconvert to an EX.
+                 * If the process requesting EX lands here, we want it to
+                 * continue attempting to upconvert and let the process
+                 * requesting PR take the lock.
+                 * If multiple processes request upconvert to PR, the first one
+                 * here will take the lock. The others will have to go thru the
+                 * OCFS2_LOCK_BLOCKED check to ensure that there is no pending
+                 * downconvert request.
+                 */
+                if (level <= lockres->l_level)
+                        goto update_holders;
+        }
        if (lockres->l_flags & OCFS2_LOCK_BLOCKED &&
            !ocfs2_may_continue_on_blocked_lock(lockres, level)) {
                /* is the lock is currently blocked on behalf of
@@ -1416,11 +1445,14 @@ again:
                goto again;
        }
+update_holders:
        /* Ok, if we get here then we're good to go. */
        ocfs2_inc_holders(lockres, level);
        ret = 0;
 unlock:
+        lockres_clear_flags(lockres, OCFS2_LOCK_UPCONVERT_FINISHING);
        spin_unlock_irqrestore(&lockres->l_lock, flags);
 out:
        /*
@@ -3155,7 +3187,7 @@ out:
 /* Mark the lockres as being dropped. It will no longer be
 * queued if blocking, but we still may have to wait on it
 * being dequeued from the downconvert thread before we can consider
- * it safe to drop. 
+ * it safe to drop.
 *
 * You can *not* attempt to call cluster_lock on this lockres anymore. */
 void ocfs2_mark_lockres_freeing(struct ocfs2_lock_res *lockres)
@@ -3352,6 +3384,7 @@ static int ocfs2_unblock_lock(struct ocfs2_super *osb,
        unsigned long flags;
        int blocking;
        int new_level;
+        int level;
        int ret = 0;
        int set_lvb = 0;
        unsigned int gen;
@@ -3360,9 +3393,17 @@ static int ocfs2_unblock_lock(struct ocfs2_super *osb,
        spin_lock_irqsave(&lockres->l_lock, flags);
-        BUG_ON(!(lockres->l_flags & OCFS2_LOCK_BLOCKED));
 recheck:
+        /*
+         * Is it still blocking? If not, we have no more work to do.
+         */
+        if (!(lockres->l_flags & OCFS2_LOCK_BLOCKED)) {
+                BUG_ON(lockres->l_blocking != DLM_LOCK_NL);
+                spin_unlock_irqrestore(&lockres->l_lock, flags);
+                ret = 0;
+                goto leave;
+        }
        if (lockres->l_flags & OCFS2_LOCK_BUSY) {
                /* XXX
                 * This is a *big* race.  The OCFS2_LOCK_PENDING flag
@@ -3401,6 +3442,31 @@ recheck:
                goto leave;
        }
+        /*
+         * This prevents livelocks. OCFS2_LOCK_UPCONVERT_FINISHING flag is
+         * set when the ast is received for an upconvert just before the
+         * OCFS2_LOCK_BUSY flag is cleared. Now if the fs received a bast
+         * on the heels of the ast, we want to delay the downconvert just
+         * enough to allow the up requestor to do its task. Because this
+         * lock is in the blocked queue, the lock will be downconverted
+         * as soon as the requestor is done with the lock.
+         */
+        if (lockres->l_flags & OCFS2_LOCK_UPCONVERT_FINISHING)
+                goto leave_requeue;
+        /*
+         * How can we block and yet be at NL?  We were trying to upconvert
+         * from NL and got canceled.  The code comes back here, and now
+         * we notice and clear BLOCKING.
+         */
+        if (lockres->l_level == DLM_LOCK_NL) {
+                BUG_ON(lockres->l_ex_holders || lockres->l_ro_holders);
+                lockres->l_blocking = DLM_LOCK_NL;
+                lockres_clear_flags(lockres, OCFS2_LOCK_BLOCKED);
+                spin_unlock_irqrestore(&lockres->l_lock, flags);
+                goto leave;
+        }
        /* if we're blocking an exclusive and we have *any* holders,
         * then requeue. */
        if ((lockres->l_blocking == DLM_LOCK_EX)
@@ -3438,6 +3504,7 @@ recheck:
         * may sleep, so we save off a copy of what we're blocking as
         * it may change while we're not holding the spin lock. */
        blocking = lockres->l_blocking;
+        level = lockres->l_level;
        spin_unlock_irqrestore(&lockres->l_lock, flags);
        ctl->unblock_action = lockres->l_ops->downconvert_worker(lockres, blocking);
@@ -3446,7 +3513,7 @@ recheck:
                goto leave;
        spin_lock_irqsave(&lockres->l_lock, flags);
-        if (blocking != lockres->l_blocking) {
+        if ((blocking != lockres->l_blocking) || (level != lockres->l_level)) {
                /* If this changed underneath us, then we can't drop
                 * it just yet. */
                goto recheck;
diff --git a/fs/ocfs2/export.c b/fs/ocfs2/export.c
index 15713cbb865c..19ad145d2af3 100644
--- a/fs/ocfs2/export.c
+++ b/fs/ocfs2/export.c
@@ -239,7 +239,7 @@ static int ocfs2_encode_fh(struct dentry *dentry, u32 *fh_in, int *max_len,
                mlog(0, "Encoding parent: blkno: %llu, generation: %u\n",
                     (unsigned long long)blkno, generation);
        }
-        
        *max_len = len;
 bail:
diff --git a/fs/ocfs2/extent_map.c b/fs/ocfs2/extent_map.c
index d35a27f4523e..5328529e7fd2 100644
--- a/fs/ocfs2/extent_map.c
+++ b/fs/ocfs2/extent_map.c
@@ -192,7 +192,7 @@ static int ocfs2_try_to_merge_extent_map(struct ocfs2_extent_map_item *emi,
                emi->ei_clusters += ins->ei_clusters;
                return 1;
        } else if ((ins->ei_phys + ins->ei_clusters) == emi->ei_phys &&
-                   (ins->ei_cpos + ins->ei_clusters) == emi->ei_phys &&
+                   (ins->ei_cpos + ins->ei_clusters) == emi->ei_cpos &&
                   ins->ei_flags == emi->ei_flags) {
                emi->ei_phys = ins->ei_phys;
                emi->ei_cpos = ins->ei_cpos;
diff --git a/fs/ocfs2/file.c b/fs/ocfs2/file.c
index 3d30a1c974a8..558ce0312421 100644
--- a/fs/ocfs2/file.c
+++ b/fs/ocfs2/file.c
@@ -749,7 +749,7 @@ static int ocfs2_write_zero_page(struct inode *inode,
        int ret;
        offset = (size & (PAGE_CACHE_SIZE-1)); /* Within page */
-        /* ugh.  in prepare/commit_write, if from==to==start of block, we 
+        /* ugh.  in prepare/commit_write, if from==to==start of block, we
        ** skip the prepare.  make sure we never send an offset for the start
        ** of a block
        */
@@ -1772,13 +1772,14 @@ static int ocfs2_prepare_inode_for_write(struct dentry *dentry,
                                         loff_t *ppos,
                                         size_t count,
                                         int appending,
-                                         int *direct_io)
+                                         int *direct_io,
+                                         int *has_refcount)
 {
        int ret = 0, meta_level = 0;
        struct inode *inode = dentry->d_inode;
        loff_t saved_pos, end;
-        /* 
+        /*
         * We start with a read level meta lock and only jump to an ex
         * if we need to make modifications here.
         */
@@ -1833,6 +1834,8 @@ static int ocfs2_prepare_inode_for_write(struct dentry *dentry,
                                                               saved_pos,
                                                               count,
                                                               &meta_level);
+                        if (has_refcount)
+                                *has_refcount = 1;
                }
                if (ret < 0) {
@@ -1856,6 +1859,10 @@ static int ocfs2_prepare_inode_for_write(struct dentry *dentry,
                        break;
                }
+                if (has_refcount && *has_refcount == 1) {
+                        *direct_io = 0;
+                        break;
+                }
                /*
                 * Allowing concurrent direct writes means
                 * i_size changes wouldn't be synchronized, so
@@ -1899,7 +1906,7 @@ static ssize_t ocfs2_file_aio_write(struct kiocb *iocb,
                                    loff_t pos)
 {
        int ret, direct_io, appending, rw_level, have_alloc_sem  = 0;
-        int can_do_direct;
+        int can_do_direct, has_refcount = 0;
        ssize_t written = 0;
        size_t ocount;          /* original count */
        size_t count;           /* after file limit checks */
@@ -1942,7 +1949,7 @@ relock:
        can_do_direct = direct_io;
        ret = ocfs2_prepare_inode_for_write(file->f_path.dentry, ppos,
                                            iocb->ki_left, appending,
-                                            &can_do_direct);
+                                            &can_do_direct, &has_refcount);
        if (ret < 0) {
                mlog_errno(ret);
                goto out;
@@ -2006,14 +2013,16 @@ out_dio:
        /* buffered aio wouldn't have proper lock coverage today */
        BUG_ON(ret == -EIOCBQUEUED && !(file->f_flags & O_DIRECT));
-        if ((file->f_flags & O_DSYNC && !direct_io) || IS_SYNC(inode)) {
+        if (((file->f_flags & O_DSYNC) && !direct_io) || IS_SYNC(inode) ||
+            ((file->f_flags & O_DIRECT) && has_refcount)) {
                ret = filemap_fdatawrite_range(file->f_mapping, pos,
                                               pos + count - 1);
                if (ret < 0)
                        written = ret;
                if (!ret && (old_size != i_size_read(inode) ||
-                    old_clusters != OCFS2_I(inode)->ip_clusters)) {
+                    old_clusters != OCFS2_I(inode)->ip_clusters ||
+                    has_refcount)) {
                        ret = jbd2_journal_force_commit(osb->journal->j_journal);
                        if (ret < 0)
                                written = ret;
@@ -2024,7 +2033,7 @@ out_dio:
                                                      pos + count - 1);
        }
-        /* 
+        /*
         * deep in g_f_a_w_n()->ocfs2_direct_IO we pass in a ocfs2_dio_end_io
         * function pointer which is called when o_direct io completes so that
         * it can unlock our rw lock.  (it's the clustered equivalent of
@@ -2062,7 +2071,7 @@ static int ocfs2_splice_to_file(struct pipe_inode_info *pipe,
        int ret;
        ret = ocfs2_prepare_inode_for_write(out->f_path.dentry, &sd->pos,
-                                            sd->total_len, 0, NULL);
+                                            sd->total_len, 0, NULL, NULL);
        if (ret < 0) {
                mlog_errno(ret);
                return ret;
@@ -2189,7 +2198,7 @@ static ssize_t ocfs2_file_aio_read(struct kiocb *iocb,
                goto bail;
        }
-        /* 
+        /*
         * buffered reads protect themselves in ->readpage().  O_DIRECT reads
         * need locks to protect pending reads from racing with truncate.
         */
@@ -2211,10 +2220,10 @@ static ssize_t ocfs2_file_aio_read(struct kiocb *iocb,
         * We're fine letting folks race truncates and extending
         * writes with read across the cluster, just like they can
         * locally. Hence no rw_lock during read.
-         * 
+         *
         * Take and drop the meta data lock to update inode fields
         * like i_size. This allows the checks down below
-         * generic_file_aio_read() a chance of actually working. 
+         * generic_file_aio_read() a chance of actually working.
         */
        ret = ocfs2_inode_lock_atime(inode, filp->f_vfsmnt, &lock_level);
        if (ret < 0) {
@@ -2239,7 +2248,7 @@ static ssize_t ocfs2_file_aio_read(struct kiocb *iocb,
 bail:
        if (have_alloc_sem)
                up_read(&inode->i_alloc_sem);
-        if (rw_level != -1) 
+        if (rw_level != -1)
                ocfs2_rw_unlock(inode, rw_level);
        mlog_exit(ret);
diff --git a/fs/ocfs2/inode.c b/fs/ocfs2/inode.c
index 0297fb8982b8..88459bdd1ff3 100644
--- a/fs/ocfs2/inode.c
+++ b/fs/ocfs2/inode.c
@@ -475,7 +475,7 @@ static int ocfs2_read_locked_inode(struct inode *inode,
        if (args->fi_flags & OCFS2_FI_FLAG_ORPHAN_RECOVERY) {
                status = ocfs2_try_open_lock(inode, 0);
                if (status) {
-                        make_bad_inode(inode);  
+                        make_bad_inode(inode);
                        return status;
                }
        }
@@ -684,7 +684,7 @@ bail:
        return status;
 }
-/* 
+/*
 * Serialize with orphan dir recovery. If the process doing
 * recovery on this orphan dir does an iget() with the dir
 * i_mutex held, we'll deadlock here. Instead we detect this
diff --git a/fs/ocfs2/ioctl.c b/fs/ocfs2/ioctl.c
index 31fbb0619510..7d9d9c132cef 100644
--- a/fs/ocfs2/ioctl.c
+++ b/fs/ocfs2/ioctl.c
@@ -7,6 +7,7 @@
 #include <linux/fs.h>
 #include <linux/mount.h>
+#include <linux/compat.h>
 #define MLOG_MASK_PREFIX ML_INODE
 #include <cluster/masklog.h>
@@ -181,6 +182,10 @@ long ocfs2_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
 #ifdef CONFIG_COMPAT
 long ocfs2_compat_ioctl(struct file *file, unsigned cmd, unsigned long arg)
 {
+        bool preserve;
+        struct reflink_arguments args;
+        struct inode *inode = file->f_path.dentry->d_inode;
        switch (cmd) {
        case OCFS2_IOC32_GETFLAGS:
                cmd = OCFS2_IOC_GETFLAGS;
@@ -195,8 +200,15 @@ long ocfs2_compat_ioctl(struct file *file, unsigned cmd, unsigned long arg)
        case OCFS2_IOC_GROUP_EXTEND:
        case OCFS2_IOC_GROUP_ADD:
        case OCFS2_IOC_GROUP_ADD64:
-        case OCFS2_IOC_REFLINK:
                break;
+        case OCFS2_IOC_REFLINK:
+                if (copy_from_user(&args, (struct reflink_arguments *)arg,
+                                   sizeof(args)))
+                        return -EFAULT;
+                preserve = (args.preserve != 0);
+                return ocfs2_reflink_ioctl(inode, compat_ptr(args.old_path),
+                                           compat_ptr(args.new_path), preserve);
        default:
                return -ENOIOCTLCMD;
        }
diff --git a/fs/ocfs2/journal.c b/fs/ocfs2/journal.c
index bf34c491ae96..9336c60e3a36 100644
--- a/fs/ocfs2/journal.c
+++ b/fs/ocfs2/journal.c
@@ -2034,7 +2034,7 @@ static int ocfs2_queue_orphans(struct ocfs2_super *osb,
                status = -ENOENT;
                mlog_errno(status);
                return status;
-        }       
+        }
        mutex_lock(&orphan_dir_inode->i_mutex);
        status = ocfs2_inode_lock(orphan_dir_inode, NULL, 0);
diff --git a/fs/ocfs2/ocfs2.h b/fs/ocfs2/ocfs2.h
index 9362eea7424b..740f448041e2 100644
--- a/fs/ocfs2/ocfs2.h
+++ b/fs/ocfs2/ocfs2.h
@@ -136,6 +136,10 @@ enum ocfs2_unlock_action {
 #define OCFS2_LOCK_PENDING       (0x00000400) /* This lockres is pending a
                                                 call to dlm_lock.  Only
                                                 exists with BUSY set. */
+#define OCFS2_LOCK_UPCONVERT_FINISHING (0x00000800) /* blocks the dc thread
+                                                     * from downconverting
+                                                     * before the upconvert
+                                                     * has completed */
 struct ocfs2_lock_res_ops;
diff --git a/fs/ocfs2/ocfs2_fs.h b/fs/ocfs2/ocfs2_fs.h
index 1a1a679e51b5..7638a38c32bc 100644
--- a/fs/ocfs2/ocfs2_fs.h
+++ b/fs/ocfs2/ocfs2_fs.h
@@ -1417,9 +1417,16 @@ static inline int ocfs2_fast_symlink_chars(int blocksize)
        return blocksize - offsetof(struct ocfs2_dinode, id2.i_symlink);
 }
-static inline int ocfs2_max_inline_data(int blocksize)
+static inline int ocfs2_max_inline_data_with_xattr(int blocksize,
+                                                   struct ocfs2_dinode *di)
 {
-        return blocksize - offsetof(struct ocfs2_dinode, id2.i_data.id_data);
+        if (di && (di->i_dyn_features & OCFS2_INLINE_XATTR_FL))
+                return blocksize -
+                        offsetof(struct ocfs2_dinode, id2.i_data.id_data) -
+                        di->i_xattr_inline_size;
+        else
+                return blocksize -
+                        offsetof(struct ocfs2_dinode, id2.i_data.id_data);
 }
 static inline int ocfs2_extent_recs_per_inode(int blocksize)
diff --git a/fs/ocfs2/refcounttree.c b/fs/ocfs2/refcounttree.c
index 74db2be75dd6..8ae65c9c020c 100644
--- a/fs/ocfs2/refcounttree.c
+++ b/fs/ocfs2/refcounttree.c
@@ -2945,7 +2945,7 @@ static int ocfs2_duplicate_clusters_by_page(handle_t *handle,
        while (offset < end) {
                page_index = offset >> PAGE_CACHE_SHIFT;
-                map_end = (page_index + 1) << PAGE_CACHE_SHIFT;
+                map_end = ((loff_t)page_index + 1) << PAGE_CACHE_SHIFT;
                if (map_end > end)
                        map_end = end;
@@ -2957,8 +2957,12 @@ static int ocfs2_duplicate_clusters_by_page(handle_t *handle,
                page = grab_cache_page(mapping, page_index);
-                /* This page can't be dirtied before we CoW it out. */
+                /*
-                BUG_ON(PageDirty(page));
+                 * In case PAGE_CACHE_SIZE <= CLUSTER_SIZE, This page
+                 * can't be dirtied before we CoW it out.
+                 */
+                if (PAGE_CACHE_SIZE <= OCFS2_SB(sb)->s_clustersize)
+                        BUG_ON(PageDirty(page));
                if (!PageUptodate(page)) {
                        ret = block_read_full_page(page, ocfs2_get_block);
@@ -3170,7 +3174,7 @@ static int ocfs2_cow_sync_writeback(struct super_block *sb,
        while (offset < end) {
                page_index = offset >> PAGE_CACHE_SHIFT;
-                map_end = (page_index + 1) << PAGE_CACHE_SHIFT;
+                map_end = ((loff_t)page_index + 1) << PAGE_CACHE_SHIFT;
                if (map_end > end)
                        map_end = end;
diff --git a/fs/ocfs2/stack_o2cb.c b/fs/ocfs2/stack_o2cb.c
index e49c41050264..3038c92af493 100644
--- a/fs/ocfs2/stack_o2cb.c
+++ b/fs/ocfs2/stack_o2cb.c
@@ -277,7 +277,7 @@ static int o2cb_cluster_connect(struct ocfs2_cluster_connection *conn)
        u32 dlm_key;
        struct dlm_ctxt *dlm;
        struct o2dlm_private *priv;
-        struct dlm_protocol_version dlm_version;
+        struct dlm_protocol_version fs_version;
        BUG_ON(conn == NULL);
        BUG_ON(o2cb_stack.sp_proto == NULL);
@@ -304,18 +304,18 @@ static int o2cb_cluster_connect(struct ocfs2_cluster_connection *conn)
        /* used by the dlm code to make message headers unique, each
         * node in this domain must agree on this. */
        dlm_key = crc32_le(0, conn->cc_name, conn->cc_namelen);
-        dlm_version.pv_major = conn->cc_version.pv_major;
+        fs_version.pv_major = conn->cc_version.pv_major;
-        dlm_version.pv_minor = conn->cc_version.pv_minor;
+        fs_version.pv_minor = conn->cc_version.pv_minor;
-        dlm = dlm_register_domain(conn->cc_name, dlm_key, &dlm_version);
+        dlm = dlm_register_domain(conn->cc_name, dlm_key, &fs_version);
        if (IS_ERR(dlm)) {
                rc = PTR_ERR(dlm);
                mlog_errno(rc);
                goto out_free;
        }
-        conn->cc_version.pv_major = dlm_version.pv_major;
+        conn->cc_version.pv_major = fs_version.pv_major;
-        conn->cc_version.pv_minor = dlm_version.pv_minor;
+        conn->cc_version.pv_minor = fs_version.pv_minor;
        conn->cc_lockspace = dlm;
        dlm_register_eviction_cb(dlm, &priv->op_eviction_cb);
diff --git a/fs/ocfs2/super.c b/fs/ocfs2/super.c
index 26069917a9f5..755cd49a5ef3 100644
--- a/fs/ocfs2/super.c
+++ b/fs/ocfs2/super.c
@@ -1062,7 +1062,7 @@ static int ocfs2_fill_super(struct super_block *sb, void *data, int silent)
                                     "file system, but write access is "
                                     "unavailable.\n");
                        else
-                                mlog_errno(status);                     
+                                mlog_errno(status);
                        goto read_super_error;
                }
diff --git a/fs/ocfs2/symlink.c b/fs/ocfs2/symlink.c
index 49b133ccbf11..32499d213fc4 100644
--- a/fs/ocfs2/symlink.c
+++ b/fs/ocfs2/symlink.c
@@ -137,20 +137,20 @@ static void *ocfs2_fast_follow_link(struct dentry *dentry,
        }
        memcpy(link, target, len);
-        nd_set_link(nd, link);
 bail:
+        nd_set_link(nd, status ? ERR_PTR(status) : link);
        brelse(bh);
        mlog_exit(status);
-        return status ? ERR_PTR(status) : link;
+        return NULL;
 }
 static void ocfs2_fast_put_link(struct dentry *dentry, struct nameidata *nd, void *cookie)
 {
-        char *link = cookie;
+        char *link = nd_get_link(nd);
+        if (!IS_ERR(link))
-        kfree(link);
+                kfree(link);
 }
 const struct inode_operations ocfs2_symlink_inode_operations = {
diff --git a/fs/ocfs2/uptodate.c b/fs/ocfs2/uptodate.c
index c61369342a27..a0a120e82b97 100644
--- a/fs/ocfs2/uptodate.c
+++ b/fs/ocfs2/uptodate.c
@@ -267,8 +267,8 @@ static int ocfs2_buffer_cached(struct ocfs2_caching_info *ci,
 }
 /* Warning: even if it returns true, this does *not* guarantee that
- * the block is stored in our inode metadata cache. 
+ * the block is stored in our inode metadata cache.
- * 
+ *
 * This can be called under lock_buffer()
 */
 int ocfs2_buffer_uptodate(struct ocfs2_caching_info *ci,
diff --git a/fs/proc/array.c b/fs/proc/array.c
index f560325c444f..13b5d0708175 100644
--- a/fs/proc/array.c
+++ b/fs/proc/array.c
@@ -327,94 +327,6 @@ static inline void task_context_switch_counts(struct seq_file *m,
                        p->nivcsw);
 }
-#ifdef CONFIG_MMU
-struct stack_stats {
-        struct vm_area_struct *vma;
-        unsigned long   startpage;
-        unsigned long   usage;
-};
-static int stack_usage_pte_range(pmd_t *pmd, unsigned long addr,
-                                unsigned long end, struct mm_walk *walk)
-{
-        struct stack_stats *ss = walk->private;
-        struct vm_area_struct *vma = ss->vma;
-        pte_t *pte, ptent;
-        spinlock_t *ptl;
-        int ret = 0;
-        pte = pte_offset_map_lock(vma->vm_mm, pmd, addr, &ptl);
-        for (; addr != end; pte++, addr += PAGE_SIZE) {
-                ptent = *pte;
-#ifdef CONFIG_STACK_GROWSUP
-                if (pte_present(ptent) || is_swap_pte(ptent))
-                        ss->usage = addr - ss->startpage + PAGE_SIZE;
-#else
-                if (pte_present(ptent) || is_swap_pte(ptent)) {
-                        ss->usage = ss->startpage - addr + PAGE_SIZE;
-                        pte++;
-                        ret = 1;
-                        break;
-                }
-#endif
-        }
-        pte_unmap_unlock(pte - 1, ptl);
-        cond_resched();
-        return ret;
-}
-static inline unsigned long get_stack_usage_in_bytes(struct vm_area_struct *vma,
-                                struct task_struct *task)
-{
-        struct stack_stats ss;
-        struct mm_walk stack_walk = {
-                .pmd_entry = stack_usage_pte_range,
-                .mm = vma->vm_mm,
-                .private = &ss,
-        };
-        if (!vma->vm_mm || is_vm_hugetlb_page(vma))
-                return 0;
-        ss.vma = vma;
-        ss.startpage = task->stack_start & PAGE_MASK;
-        ss.usage = 0;
-#ifdef CONFIG_STACK_GROWSUP
-        walk_page_range(KSTK_ESP(task) & PAGE_MASK, vma->vm_end,
-                &stack_walk);
-#else
-        walk_page_range(vma->vm_start, (KSTK_ESP(task) & PAGE_MASK) + PAGE_SIZE,
-                &stack_walk);
-#endif
-        return ss.usage;
-}
-static inline void task_show_stack_usage(struct seq_file *m,
-                                                struct task_struct *task)
-{
-        struct vm_area_struct   *vma;
-        struct mm_struct        *mm = get_task_mm(task);
-        if (mm) {
-                down_read(&mm->mmap_sem);
-                vma = find_vma(mm, task->stack_start);
-                if (vma)
-                        seq_printf(m, "Stack usage:\t%lu kB\n",
-                                get_stack_usage_in_bytes(vma, task) >> 10);
-                up_read(&mm->mmap_sem);
-                mmput(mm);
-        }
-}
-#else
-static void task_show_stack_usage(struct seq_file *m, struct task_struct *task)
-{
-}
-#endif          /* CONFIG_MMU */
 static void task_cpus_allowed(struct seq_file *m, struct task_struct *task)
 {
        seq_printf(m, "Cpus_allowed:\t");
@@ -445,7 +357,6 @@ int proc_pid_status(struct seq_file *m, struct pid_namespace *ns,
        task_show_regs(m, task);
 #endif
        task_context_switch_counts(m, task);
-        task_show_stack_usage(m, task);
        return 0;
 }
diff --git a/fs/proc/base.c b/fs/proc/base.c
index 18d5cc62d8ed..58324c299165 100644
--- a/fs/proc/base.c
+++ b/fs/proc/base.c
@@ -1419,7 +1419,6 @@ static void *proc_pid_follow_link(struct dentry *dentry, struct nameidata *nd)
                goto out;
        error = PROC_I(inode)->op.proc_get_link(inode, &nd->path);
-        nd->last_type = LAST_BIND;
 out:
        return ERR_PTR(error);
 }
@@ -2370,16 +2369,30 @@ static void *proc_self_follow_link(struct dentry *dentry, struct nameidata *nd)
 {
        struct pid_namespace *ns = dentry->d_sb->s_fs_info;
        pid_t tgid = task_tgid_nr_ns(current, ns);
-        char tmp[PROC_NUMBUF];
+        char *name = ERR_PTR(-ENOENT);
-        if (!tgid)
+        if (tgid) {
-                return ERR_PTR(-ENOENT);
+                name = __getname();
-        sprintf(tmp, "%d", task_tgid_nr_ns(current, ns));
+                if (!name)
-        return ERR_PTR(vfs_follow_link(nd,tmp));
+                        name = ERR_PTR(-ENOMEM);
+                else
+                        sprintf(name, "%d", tgid);
+        }
+        nd_set_link(nd, name);
+        return NULL;
+}
+static void proc_self_put_link(struct dentry *dentry, struct nameidata *nd,
+                                void *cookie)
+{
+        char *s = nd_get_link(nd);
+        if (!IS_ERR(s))
+                __putname(s);
 }
 static const struct inode_operations proc_self_inode_operations = {
        .readlink       = proc_self_readlink,
        .follow_link    = proc_self_follow_link,
+        .put_link       = proc_self_put_link,
 };
 /*
diff --git a/fs/proc/task_mmu.c b/fs/proc/task_mmu.c
index 47c03f4336b8..f277c4a111cb 100644
--- a/fs/proc/task_mmu.c
+++ b/fs/proc/task_mmu.c
@@ -361,12 +361,11 @@ static int smaps_pte_range(pmd_t *pmd, unsigned long addr, unsigned long end,
                if (!pte_present(ptent))
                        continue;
-                mss->resident += PAGE_SIZE;
                page = vm_normal_page(vma, addr, ptent);
                if (!page)
                        continue;
+                mss->resident += PAGE_SIZE;
                /* Accumulate the size in pages that have been accessed. */
                if (pte_young(ptent) || PageReferenced(page))
                        mss->referenced += PAGE_SIZE;
diff --git a/fs/quota/dquot.c b/fs/quota/dquot.c
index dea86abdf2e7..3fc62b097bed 100644
--- a/fs/quota/dquot.c
+++ b/fs/quota/dquot.c
@@ -1377,6 +1377,9 @@ static void inode_sub_rsv_space(struct inode *inode, qsize_t number)
 static qsize_t inode_get_rsv_space(struct inode *inode)
 {
        qsize_t ret;
+        if (!inode->i_sb->dq_op->get_reserved_space)
+                return 0;
        spin_lock(&inode->i_lock);
        ret = *inode_reserved_space(inode);
        spin_unlock(&inode->i_lock);
diff --git a/fs/ramfs/file-nommu.c b/fs/ramfs/file-nommu.c
index 2efc57173fd7..1739a4aba25f 100644
--- a/fs/ramfs/file-nommu.c
+++ b/fs/ramfs/file-nommu.c
@@ -123,30 +123,6 @@ add_error:
 /*****************************************************************************/
 /*
- * check that file shrinkage doesn't leave any VMAs dangling in midair
- */
-static int ramfs_nommu_check_mappings(struct inode *inode,
-                                      size_t newsize, size_t size)
-{
-        struct vm_area_struct *vma;
-        struct prio_tree_iter iter;
-        /* search for VMAs that fall within the dead zone */
-        vma_prio_tree_foreach(vma, &iter, &inode->i_mapping->i_mmap,
-                              newsize >> PAGE_SHIFT,
-                              (size + PAGE_SIZE - 1) >> PAGE_SHIFT
-                              ) {
-                /* found one - only interested if it's shared out of the page
-                 * cache */
-                if (vma->vm_flags & VM_SHARED)
-                        return -ETXTBSY; /* not quite true, but near enough */
-        }
-        return 0;
-}
-/*****************************************************************************/
-/*
 *
 */
 static int ramfs_nommu_resize(struct inode *inode, loff_t newsize, loff_t size)
@@ -164,7 +140,7 @@ static int ramfs_nommu_resize(struct inode *inode, loff_t newsize, loff_t size)
        /* check that a decrease in size doesn't cut off any shared mappings */
        if (newsize < size) {
-                ret = ramfs_nommu_check_mappings(inode, newsize, size);
+                ret = nommu_shrink_inode_mappings(inode, size, newsize);
                if (ret < 0)
                        return ret;
        }
diff --git a/fs/reiserfs/bitmap.c b/fs/reiserfs/bitmap.c
index 685495707181..65c872761177 100644
--- a/fs/reiserfs/bitmap.c
+++ b/fs/reiserfs/bitmap.c
@@ -1277,7 +1277,10 @@ int reiserfs_init_bitmap_cache(struct super_block *sb)
        struct reiserfs_bitmap_info *bitmap;
        unsigned int bmap_nr = reiserfs_bmap_count(sb);
+        /* Avoid lock recursion in fault case */
+        reiserfs_write_unlock(sb);
        bitmap = vmalloc(sizeof(*bitmap) * bmap_nr);
+        reiserfs_write_lock(sb);
        if (bitmap == NULL)
                return -ENOMEM;
diff --git a/fs/reiserfs/inode.c b/fs/reiserfs/inode.c
index 290ae38fca8a..2df0f5c7c60b 100644
--- a/fs/reiserfs/inode.c
+++ b/fs/reiserfs/inode.c
@@ -31,11 +31,12 @@ void reiserfs_delete_inode(struct inode *inode)
            JOURNAL_PER_BALANCE_CNT * 2 +
            2 * REISERFS_QUOTA_INIT_BLOCKS(inode->i_sb);
        struct reiserfs_transaction_handle th;
+        int depth;
        int err;
        truncate_inode_pages(&inode->i_data, 0);
-        reiserfs_write_lock(inode->i_sb);
+        depth = reiserfs_write_lock_once(inode->i_sb);
        /* The = 0 happens when we abort creating a new inode for some reason like lack of space.. */
        if (!(inode->i_state & I_NEW) && INODE_PKEY(inode)->k_objectid != 0) {  /* also handles bad_inode case */
@@ -74,7 +75,7 @@ void reiserfs_delete_inode(struct inode *inode)
      out:
        clear_inode(inode);     /* note this must go after the journal_end to prevent deadlock */
        inode->i_blocks = 0;
-        reiserfs_write_unlock(inode->i_sb);
+        reiserfs_write_unlock_once(inode->i_sb, depth);
 }
 static void _make_cpu_key(struct cpu_key *key, int version, __u32 dirid,
@@ -1496,9 +1497,11 @@ struct inode *reiserfs_iget(struct super_block *s, const struct cpu_key *key)
        args.objectid = key->on_disk_key.k_objectid;
        args.dirid = key->on_disk_key.k_dir_id;
+        reiserfs_write_unlock(s);
        inode = iget5_locked(s, key->on_disk_key.k_objectid,
                             reiserfs_find_actor, reiserfs_init_locked_inode,
                             (void *)(&args));
+        reiserfs_write_lock(s);
        if (!inode)
                return ERR_PTR(-ENOMEM);
@@ -3061,13 +3064,14 @@ static ssize_t reiserfs_direct_IO(int rw, struct kiocb *iocb,
 int reiserfs_setattr(struct dentry *dentry, struct iattr *attr)
 {
        struct inode *inode = dentry->d_inode;
-        int error;
        unsigned int ia_valid;
+        int depth;
+        int error;
        /* must be turned off for recursive notify_change calls */
        ia_valid = attr->ia_valid &= ~(ATTR_KILL_SUID|ATTR_KILL_SGID);
-        reiserfs_write_lock(inode->i_sb);
+        depth = reiserfs_write_lock_once(inode->i_sb);
        if (attr->ia_valid & ATTR_SIZE) {
                /* version 2 items will be caught by the s_maxbytes check
                 ** done for us in vmtruncate
@@ -3148,8 +3152,17 @@ int reiserfs_setattr(struct dentry *dentry, struct iattr *attr)
                                    journal_end(&th, inode->i_sb, jbegin_count);
                        }
                }
-                if (!error)
+                if (!error) {
+                        /*
+                         * Relax the lock here, as it might truncate the
+                         * inode pages and wait for inode pages locks.
+                         * To release such page lock, the owner needs the
+                         * reiserfs lock
+                         */
+                        reiserfs_write_unlock_once(inode->i_sb, depth);
                        error = inode_setattr(inode, attr);
+                        depth = reiserfs_write_lock_once(inode->i_sb);
+                }
        }
        if (!error && reiserfs_posixacl(inode->i_sb)) {
@@ -3158,7 +3171,8 @@ int reiserfs_setattr(struct dentry *dentry, struct iattr *attr)
        }
      out:
-        reiserfs_write_unlock(inode->i_sb);
+        reiserfs_write_unlock_once(inode->i_sb, depth);
        return error;
 }
diff --git a/fs/reiserfs/ioctl.c b/fs/reiserfs/ioctl.c
index ace77451ceb1..f53505de0712 100644
--- a/fs/reiserfs/ioctl.c
+++ b/fs/reiserfs/ioctl.c
@@ -104,9 +104,10 @@ setflags_out:
                err = put_user(inode->i_generation, (int __user *)arg);
                break;
        case REISERFS_IOC_SETVERSION:
-                if (!is_owner_or_cap(inode))
+                if (!is_owner_or_cap(inode)) {
                        err = -EPERM;
                        break;
+                }
                err = mnt_want_write(filp->f_path.mnt);
                if (err)
                        break;
diff --git a/fs/reiserfs/journal.c b/fs/reiserfs/journal.c
index 2f8a7e7b8dab..ba98546fabbd 100644
--- a/fs/reiserfs/journal.c
+++ b/fs/reiserfs/journal.c
@@ -2009,10 +2009,11 @@ static int do_journal_release(struct reiserfs_transaction_handle *th,
                destroy_workqueue(commit_wq);
                commit_wq = NULL;
        }
-        reiserfs_write_lock(sb);
        free_journal_ram(sb);
+        reiserfs_write_lock(sb);
        return 0;
 }
@@ -2758,11 +2759,18 @@ int journal_init(struct super_block *sb, const char *j_dev_name,
        struct reiserfs_journal *journal;
        struct reiserfs_journal_list *jl;
        char b[BDEVNAME_SIZE];
+        int ret;
+        /*
+         * Unlock here to avoid various RECLAIM-FS-ON <-> IN-RECLAIM-FS
+         * dependency inversion warnings.
+         */
+        reiserfs_write_unlock(sb);
        journal = SB_JOURNAL(sb) = vmalloc(sizeof(struct reiserfs_journal));
        if (!journal) {
                reiserfs_warning(sb, "journal-1256",
                                 "unable to get memory for journal structure");
+                reiserfs_write_lock(sb);
                return 1;
        }
        memset(journal, 0, sizeof(struct reiserfs_journal));
@@ -2771,10 +2779,12 @@ int journal_init(struct super_block *sb, const char *j_dev_name,
        INIT_LIST_HEAD(&journal->j_working_list);
        INIT_LIST_HEAD(&journal->j_journal_list);
        journal->j_persistent_trans = 0;
-        if (reiserfs_allocate_list_bitmaps(sb,
+        ret = reiserfs_allocate_list_bitmaps(sb, journal->j_list_bitmap,
-                                           journal->j_list_bitmap,
+                                           reiserfs_bmap_count(sb));
-                                           reiserfs_bmap_count(sb)))
+        reiserfs_write_lock(sb);
+        if (ret)
                goto free_and_return;
        allocate_bitmap_nodes(sb);
        /* reserved for journal area support */
@@ -2903,7 +2913,9 @@ int journal_init(struct super_block *sb, const char *j_dev_name,
        journal->j_mount_id = 10;
        journal->j_state = 0;
        atomic_set(&(journal->j_jlock), 0);
+        reiserfs_write_unlock(sb);
        journal->j_cnode_free_list = allocate_cnodes(num_cnodes);
+        reiserfs_write_lock(sb);
        journal->j_cnode_free_orig = journal->j_cnode_free_list;
        journal->j_cnode_free = journal->j_cnode_free_list ? num_cnodes : 0;
        journal->j_cnode_used = 0;
diff --git a/fs/reiserfs/lock.c b/fs/reiserfs/lock.c
index ee2cfc0fd8a7..b87aa2c1afc1 100644
--- a/fs/reiserfs/lock.c
+++ b/fs/reiserfs/lock.c
@@ -86,3 +86,12 @@ void reiserfs_check_lock_depth(struct super_block *sb, char *caller)
                reiserfs_panic(sb, "%s called without kernel lock held %d",
                               caller);
 }
+#ifdef CONFIG_REISERFS_CHECK
+void reiserfs_lock_check_recursive(struct super_block *sb)
+{
+        struct reiserfs_sb_info *sb_i = REISERFS_SB(sb);
+        WARN_ONCE((sb_i->lock_depth > 0), "Unwanted recursive reiserfs lock!\n");
+}
+#endif
diff --git a/fs/reiserfs/namei.c b/fs/reiserfs/namei.c
index e296ff72a6cc..9d4dcf0b07cb 100644
--- a/fs/reiserfs/namei.c
+++ b/fs/reiserfs/namei.c
@@ -921,6 +921,7 @@ static int reiserfs_unlink(struct inode *dir, struct dentry *dentry)
        struct reiserfs_transaction_handle th;
        int jbegin_count;
        unsigned long savelink;
+        int depth;
        inode = dentry->d_inode;
@@ -932,7 +933,7 @@ static int reiserfs_unlink(struct inode *dir, struct dentry *dentry)
            JOURNAL_PER_BALANCE_CNT * 2 + 2 +
            4 * REISERFS_QUOTA_TRANS_BLOCKS(dir->i_sb);
-        reiserfs_write_lock(dir->i_sb);
+        depth = reiserfs_write_lock_once(dir->i_sb);
        retval = journal_begin(&th, dir->i_sb, jbegin_count);
        if (retval)
                goto out_unlink;
@@ -993,7 +994,7 @@ static int reiserfs_unlink(struct inode *dir, struct dentry *dentry)
        retval = journal_end(&th, dir->i_sb, jbegin_count);
        reiserfs_check_path(&path);
-        reiserfs_write_unlock(dir->i_sb);
+        reiserfs_write_unlock_once(dir->i_sb, depth);
        return retval;
      end_unlink:
@@ -1003,7 +1004,7 @@ static int reiserfs_unlink(struct inode *dir, struct dentry *dentry)
        if (err)
                retval = err;
      out_unlink:
-        reiserfs_write_unlock(dir->i_sb);
+        reiserfs_write_unlock_once(dir->i_sb, depth);
        return retval;
 }
diff --git a/fs/reiserfs/xattr.c b/fs/reiserfs/xattr.c
index 8c7033a8b67e..81f09fab8ae4 100644
--- a/fs/reiserfs/xattr.c
+++ b/fs/reiserfs/xattr.c
@@ -83,7 +83,8 @@ static int xattr_unlink(struct inode *dir, struct dentry *dentry)
        BUG_ON(!mutex_is_locked(&dir->i_mutex));
        vfs_dq_init(dir);
-        mutex_lock_nested(&dentry->d_inode->i_mutex, I_MUTEX_CHILD);
+        reiserfs_mutex_lock_nested_safe(&dentry->d_inode->i_mutex,
+                                        I_MUTEX_CHILD, dir->i_sb);
        error = dir->i_op->unlink(dir, dentry);
        mutex_unlock(&dentry->d_inode->i_mutex);
@@ -98,7 +99,8 @@ static int xattr_rmdir(struct inode *dir, struct dentry *dentry)
        BUG_ON(!mutex_is_locked(&dir->i_mutex));
        vfs_dq_init(dir);
-        mutex_lock_nested(&dentry->d_inode->i_mutex, I_MUTEX_CHILD);
+        reiserfs_mutex_lock_nested_safe(&dentry->d_inode->i_mutex,
+                                        I_MUTEX_CHILD, dir->i_sb);
        dentry_unhash(dentry);
        error = dir->i_op->rmdir(dir, dentry);
        if (!error)
@@ -235,16 +237,22 @@ static int reiserfs_for_each_xattr(struct inode *inode,
        if (IS_PRIVATE(inode) || get_inode_sd_version(inode) == STAT_DATA_V1)
                return 0;
+        reiserfs_write_unlock(inode->i_sb);
        dir = open_xa_dir(inode, XATTR_REPLACE);
        if (IS_ERR(dir)) {
                err = PTR_ERR(dir);
+                reiserfs_write_lock(inode->i_sb);
                goto out;
        } else if (!dir->d_inode) {
                err = 0;
+                reiserfs_write_lock(inode->i_sb);
                goto out_dir;
        }
        mutex_lock_nested(&dir->d_inode->i_mutex, I_MUTEX_XATTR);
+        reiserfs_write_lock(inode->i_sb);
        buf.xadir = dir;
        err = reiserfs_readdir_dentry(dir, &buf, fill_with_dentries, &pos);
        while ((err == 0 || err == -ENOSPC) && buf.count) {
@@ -283,8 +291,9 @@ static int reiserfs_for_each_xattr(struct inode *inode,
                err = journal_begin(&th, inode->i_sb, blocks);
                if (!err) {
                        int jerror;
-                        mutex_lock_nested(&dir->d_parent->d_inode->i_mutex,
+                        reiserfs_mutex_lock_nested_safe(
-                                          I_MUTEX_XATTR);
+                                          &dir->d_parent->d_inode->i_mutex,
+                                          I_MUTEX_XATTR, inode->i_sb);
                        err = action(dir, data);
                        jerror = journal_end(&th, inode->i_sb, blocks);
                        mutex_unlock(&dir->d_parent->d_inode->i_mutex);
@@ -443,7 +452,9 @@ static int lookup_and_delete_xattr(struct inode *inode, const char *name)
        }
        if (dentry->d_inode) {
+                reiserfs_write_lock(inode->i_sb);
                err = xattr_unlink(xadir->d_inode, dentry);
+                reiserfs_write_unlock(inode->i_sb);
                update_ctime(inode);
        }
@@ -477,15 +488,24 @@ reiserfs_xattr_set_handle(struct reiserfs_transaction_handle *th,
        if (get_inode_sd_version(inode) == STAT_DATA_V1)
                return -EOPNOTSUPP;
-        if (!buffer)
+        reiserfs_write_unlock(inode->i_sb);
-                return lookup_and_delete_xattr(inode, name);
+        if (!buffer) {
+                err = lookup_and_delete_xattr(inode, name);
+                reiserfs_write_lock(inode->i_sb);
+                return err;
+        }
        dentry = xattr_lookup(inode, name, flags);
-        if (IS_ERR(dentry))
+        if (IS_ERR(dentry)) {
+                reiserfs_write_lock(inode->i_sb);
                return PTR_ERR(dentry);
+        }
        down_write(&REISERFS_I(inode)->i_xattr_sem);
+        reiserfs_write_lock(inode->i_sb);
        xahash = xattr_hash(buffer, buffer_size);
        while (buffer_pos < buffer_size || buffer_pos == 0) {
                size_t chunk;
@@ -540,8 +560,12 @@ reiserfs_xattr_set_handle(struct reiserfs_transaction_handle *th,
                        .ia_size = buffer_size,
                        .ia_valid = ATTR_SIZE | ATTR_CTIME,
                };
+                reiserfs_write_unlock(inode->i_sb);
                mutex_lock_nested(&dentry->d_inode->i_mutex, I_MUTEX_XATTR);
                down_write(&dentry->d_inode->i_alloc_sem);
+                reiserfs_write_lock(inode->i_sb);
                err = reiserfs_setattr(dentry, &newattrs);
                up_write(&dentry->d_inode->i_alloc_sem);
                mutex_unlock(&dentry->d_inode->i_mutex);
diff --git a/fs/reiserfs/xattr_acl.c b/fs/reiserfs/xattr_acl.c
index cc32e6ada67b..dd20a7883f0f 100644
--- a/fs/reiserfs/xattr_acl.c
+++ b/fs/reiserfs/xattr_acl.c
@@ -455,7 +455,9 @@ int reiserfs_acl_chmod(struct inode *inode)
                return 0;
        }
+        reiserfs_write_unlock(inode->i_sb);
        acl = reiserfs_get_acl(inode, ACL_TYPE_ACCESS);
+        reiserfs_write_lock(inode->i_sb);
        if (!acl)
                return 0;
        if (IS_ERR(acl))
diff --git a/fs/romfs/super.c b/fs/romfs/super.c
index c117fa80d1e9..42d213546894 100644
--- a/fs/romfs/super.c
+++ b/fs/romfs/super.c
@@ -544,6 +544,7 @@ error:
 error_rsb_inval:
        ret = -EINVAL;
 error_rsb:
+        kfree(rsb);
        return ret;
 }
diff --git a/fs/sysfs/dir.c b/fs/sysfs/dir.c
index f05f2303a8b8..699f371b9f12 100644
--- a/fs/sysfs/dir.c
+++ b/fs/sysfs/dir.c
@@ -106,8 +106,10 @@ static struct sysfs_dirent *sysfs_get_active(struct sysfs_dirent *sd)
                        return NULL;
                t = atomic_cmpxchg(&sd->s_active, v, v + 1);
-                if (likely(t == v))
+                if (likely(t == v)) {
+                        rwsem_acquire_read(&sd->dep_map, 0, 1, _RET_IP_);
                        return sd;
+                }
                if (t < 0)
                        return NULL;
@@ -130,6 +132,7 @@ static void sysfs_put_active(struct sysfs_dirent *sd)
        if (unlikely(!sd))
                return;
+        rwsem_release(&sd->dep_map, 1, _RET_IP_);
        v = atomic_dec_return(&sd->s_active);
        if (likely(v != SD_DEACTIVATED_BIAS))
                return;
@@ -194,15 +197,21 @@ static void sysfs_deactivate(struct sysfs_dirent *sd)
        BUG_ON(sd->s_sibling || !(sd->s_flags & SYSFS_FLAG_REMOVED));
        sd->s_sibling = (void *)&wait;
+        rwsem_acquire(&sd->dep_map, 0, 0, _RET_IP_);
        /* atomic_add_return() is a mb(), put_active() will always see
         * the updated sd->s_sibling.
         */
        v = atomic_add_return(SD_DEACTIVATED_BIAS, &sd->s_active);
-        if (v != SD_DEACTIVATED_BIAS)
+        if (v != SD_DEACTIVATED_BIAS) {
+                lock_contended(&sd->dep_map, _RET_IP_);
                wait_for_completion(&wait);
+        }
        sd->s_sibling = NULL;
+        lock_acquired(&sd->dep_map, _RET_IP_);
+        rwsem_release(&sd->dep_map, 1, _RET_IP_);
 }
 static int sysfs_alloc_ino(ino_t *pino)
@@ -345,6 +354,7 @@ struct sysfs_dirent *sysfs_new_dirent(const char *name, umode_t mode, int type)
        atomic_set(&sd->s_count, 1);
        atomic_set(&sd->s_active, 0);
+        sysfs_dirent_init_lockdep(sd);
        sd->s_name = name;
        sd->s_mode = mode;
diff --git a/fs/sysfs/inode.c b/fs/sysfs/inode.c
index 220b758523ae..6a06a1d1ea7b 100644
--- a/fs/sysfs/inode.c
+++ b/fs/sysfs/inode.c
@@ -81,24 +81,23 @@ int sysfs_sd_setattr(struct sysfs_dirent *sd, struct iattr * iattr)
                if (!sd_attrs)
                        return -ENOMEM;
                sd->s_iattr = sd_attrs;
-        } else {
+        }
-                /* attributes were changed at least once in past */
+        /* attributes were changed at least once in past */
-                iattrs = &sd_attrs->ia_iattr;
+        iattrs = &sd_attrs->ia_iattr;
-                if (ia_valid & ATTR_UID)
+        if (ia_valid & ATTR_UID)
-                        iattrs->ia_uid = iattr->ia_uid;
+                iattrs->ia_uid = iattr->ia_uid;
-                if (ia_valid & ATTR_GID)
+        if (ia_valid & ATTR_GID)
-                        iattrs->ia_gid = iattr->ia_gid;
+                iattrs->ia_gid = iattr->ia_gid;
-                if (ia_valid & ATTR_ATIME)
+        if (ia_valid & ATTR_ATIME)
-                        iattrs->ia_atime = iattr->ia_atime;
+                iattrs->ia_atime = iattr->ia_atime;
-                if (ia_valid & ATTR_MTIME)
+        if (ia_valid & ATTR_MTIME)
-                        iattrs->ia_mtime = iattr->ia_mtime;
+                iattrs->ia_mtime = iattr->ia_mtime;
-                if (ia_valid & ATTR_CTIME)
+        if (ia_valid & ATTR_CTIME)
-                        iattrs->ia_ctime = iattr->ia_ctime;
+                iattrs->ia_ctime = iattr->ia_ctime;
-                if (ia_valid & ATTR_MODE) {
+        if (ia_valid & ATTR_MODE) {
-                        umode_t mode = iattr->ia_mode;
+                umode_t mode = iattr->ia_mode;
-                        iattrs->ia_mode = sd->s_mode = mode;
+                iattrs->ia_mode = sd->s_mode = mode;
-                }
        }
        return 0;
 }
diff --git a/fs/sysfs/sysfs.h b/fs/sysfs/sysfs.h
index ca52e7b9d8f8..cdd9377a6e06 100644
--- a/fs/sysfs/sysfs.h
+++ b/fs/sysfs/sysfs.h
@@ -8,6 +8,7 @@
 * This file is released under the GPLv2.
 */
+#include <linux/lockdep.h>
 #include <linux/fs.h>
 struct sysfs_open_dirent;
@@ -50,6 +51,9 @@ struct sysfs_inode_attrs {
 struct sysfs_dirent {
        atomic_t                s_count;
        atomic_t                s_active;
+#ifdef CONFIG_DEBUG_LOCK_ALLOC
+        struct lockdep_map      dep_map;
+#endif
        struct sysfs_dirent     *s_parent;
        struct sysfs_dirent     *s_sibling;
        const char              *s_name;
@@ -84,6 +88,17 @@ static inline unsigned int sysfs_type(struct sysfs_dirent *sd)
        return sd->s_flags & SYSFS_TYPE_MASK;
 }
+#ifdef CONFIG_DEBUG_LOCK_ALLOC
+#define sysfs_dirent_init_lockdep(sd)                           \
+do {                                                            \
+        static struct lock_class_key __key;                     \
+                                                                \
+        lockdep_init_map(&sd->dep_map, "s_active", &__key, 0);  \
+} while(0)
+#else
+#define sysfs_dirent_init_lockdep(sd) do {} while(0)
+#endif
 /*
 * Context structure to be used while adding/removing nodes.
 */
diff --git a/fs/ubifs/gc.c b/fs/ubifs/gc.c
index 618c2701d3a7..e5a3d8e96bb7 100644
--- a/fs/ubifs/gc.c
+++ b/fs/ubifs/gc.c
@@ -54,6 +54,7 @@
 */
 #include <linux/pagemap.h>
+#include <linux/list_sort.h>
 #include "ubifs.h"
 /*
@@ -108,101 +109,6 @@ static int switch_gc_head(struct ubifs_info *c)
 }
 /**
- * list_sort - sort a list.
- * @priv: private data, passed to @cmp
- * @head: the list to sort
- * @cmp: the elements comparison function
- *
- * This function has been implemented by Mark J Roberts <mjr@znex.org>. It
- * implements "merge sort" which has O(nlog(n)) complexity. The list is sorted
- * in ascending order.
- *
- * The comparison function @cmp is supposed to return a negative value if @a is
- * than @b, and a positive value if @a is greater than @b. If @a and @b are
- * equivalent, then it does not matter what this function returns.
- */
-static void list_sort(void *priv, struct list_head *head,
-                      int (*cmp)(void *priv, struct list_head *a,
-                                 struct list_head *b))
-{
-        struct list_head *p, *q, *e, *list, *tail, *oldhead;
-        int insize, nmerges, psize, qsize, i;
-        if (list_empty(head))
-                return;
-        list = head->next;
-        list_del(head);
-        insize = 1;
-        for (;;) {
-                p = oldhead = list;
-                list = tail = NULL;
-                nmerges = 0;
-                while (p) {
-                        nmerges++;
-                        q = p;
-                        psize = 0;
-                        for (i = 0; i < insize; i++) {
-                                psize++;
-                                q = q->next == oldhead ? NULL : q->next;
-                                if (!q)
-                                        break;
-                        }
-                        qsize = insize;
-                        while (psize > 0 || (qsize > 0 && q)) {
-                                if (!psize) {
-                                        e = q;
-                                        q = q->next;
-                                        qsize--;
-                                        if (q == oldhead)
-                                                q = NULL;
-                                } else if (!qsize || !q) {
-                                        e = p;
-                                        p = p->next;
-                                        psize--;
-                                        if (p == oldhead)
-                                                p = NULL;
-                                } else if (cmp(priv, p, q) <= 0) {
-                                        e = p;
-                                        p = p->next;
-                                        psize--;
-                                        if (p == oldhead)
-                                                p = NULL;
-                                } else {
-                                        e = q;
-                                        q = q->next;
-                                        qsize--;
-                                        if (q == oldhead)
-                                                q = NULL;
-                                }
-                                if (tail)
-                                        tail->next = e;
-                                else
-                                        list = e;
-                                e->prev = tail;
-                                tail = e;
-                        }
-                        p = q;
-                }
-                tail->next = list;
-                list->prev = tail;
-                if (nmerges <= 1)
-                        break;
-                insize *= 2;
-        }
-        head->next = list;
-        head->prev = list->prev;
-        list->prev->next = head;
-        list->prev = head;
-}
-/**
 * data_nodes_cmp - compare 2 data nodes.
 * @priv: UBIFS file-system description object
 * @a: first data node
diff --git a/fs/xfs/linux-2.6/xfs_acl.c b/fs/xfs/linux-2.6/xfs_acl.c
index 2512125dfa7c..883ca5ab8af5 100644
--- a/fs/xfs/linux-2.6/xfs_acl.c
+++ b/fs/xfs/linux-2.6/xfs_acl.c
@@ -251,8 +251,9 @@ xfs_set_mode(struct inode *inode, mode_t mode)
        if (mode != inode->i_mode) {
                struct iattr iattr;
-                iattr.ia_valid = ATTR_MODE;
+                iattr.ia_valid = ATTR_MODE | ATTR_CTIME;
                iattr.ia_mode = mode;
+                iattr.ia_ctime = current_fs_time(inode->i_sb);
                error = -xfs_setattr(XFS_I(inode), &iattr, XFS_ATTR_NOACL);
        }
diff --git a/fs/xfs/linux-2.6/xfs_super.c b/fs/xfs/linux-2.6/xfs_super.c
index 09783cc444ac..77414db10dc2 100644
--- a/fs/xfs/linux-2.6/xfs_super.c
+++ b/fs/xfs/linux-2.6/xfs_super.c
@@ -954,16 +954,14 @@ xfs_fs_destroy_inode(
        ASSERT_ALWAYS(!xfs_iflags_test(ip, XFS_IRECLAIM));
        /*
-         * If we have nothing to flush with this inode then complete the
+         * We always use background reclaim here because even if the
-         * teardown now, otherwise delay the flush operation.
+         * inode is clean, it still may be under IO and hence we have
+         * to take the flush lock. The background reclaim path handles
+         * this more efficiently than we can here, so simply let background
+         * reclaim tear down all inodes.
         */
-        if (!xfs_inode_clean(ip)) {
-                xfs_inode_set_reclaim_tag(ip);
-                return;
-        }
 out_reclaim:
-        xfs_ireclaim(ip);
+        xfs_inode_set_reclaim_tag(ip);
 }
 /*
diff --git a/fs/xfs/linux-2.6/xfs_sync.c b/fs/xfs/linux-2.6/xfs_sync.c
index 6fed97a8cd3e..1f5e4bb5e970 100644
--- a/fs/xfs/linux-2.6/xfs_sync.c
+++ b/fs/xfs/linux-2.6/xfs_sync.c
@@ -65,7 +65,6 @@ xfs_inode_ag_lookup(
         * as the tree is sparse and a gang lookup walks to find
         * the number of objects requested.
         */
-        read_lock(&pag->pag_ici_lock);
        if (tag == XFS_ICI_NO_TAG) {
                nr_found = radix_tree_gang_lookup(&pag->pag_ici_root,
                                (void **)&ip, *first_index, 1);
@@ -74,7 +73,7 @@ xfs_inode_ag_lookup(
                                (void **)&ip, *first_index, 1, tag);
        }
        if (!nr_found)
-                goto unlock;
+                return NULL;
        /*
         * Update the index for the next lookup. Catch overflows
@@ -84,13 +83,8 @@ xfs_inode_ag_lookup(
         */
        *first_index = XFS_INO_TO_AGINO(mp, ip->i_ino + 1);
        if (*first_index < XFS_INO_TO_AGINO(mp, ip->i_ino))
-                goto unlock;
+                return NULL;
        return ip;
-unlock:
-        read_unlock(&pag->pag_ici_lock);
-        return NULL;
 }
 STATIC int
@@ -100,7 +94,8 @@ xfs_inode_ag_walk(
        int                     (*execute)(struct xfs_inode *ip,
                                           struct xfs_perag *pag, int flags),
        int                     flags,
-        int                     tag)
+        int                     tag,
+        int                     exclusive)
 {
        struct xfs_perag        *pag = &mp->m_perag[ag];
        uint32_t                first_index;
@@ -114,10 +109,20 @@ restart:
                int             error = 0;
                xfs_inode_t     *ip;
+                if (exclusive)
+                        write_lock(&pag->pag_ici_lock);
+                else
+                        read_lock(&pag->pag_ici_lock);
                ip = xfs_inode_ag_lookup(mp, pag, &first_index, tag);
-                if (!ip)
+                if (!ip) {
+                        if (exclusive)
+                                write_unlock(&pag->pag_ici_lock);
+                        else
+                                read_unlock(&pag->pag_ici_lock);
                        break;
+                }
+                /* execute releases pag->pag_ici_lock */
                error = execute(ip, pag, flags);
                if (error == EAGAIN) {
                        skipped++;
@@ -125,9 +130,8 @@ restart:
                }
                if (error)
                        last_error = error;
-                /*
-                 * bail out if the filesystem is corrupted.
+                /* bail out if the filesystem is corrupted.  */
-                 */
                if (error == EFSCORRUPTED)
                        break;
@@ -148,7 +152,8 @@ xfs_inode_ag_iterator(
        int                     (*execute)(struct xfs_inode *ip,
                                           struct xfs_perag *pag, int flags),
        int                     flags,
-        int                     tag)
+        int                     tag,
+        int                     exclusive)
 {
        int                     error = 0;
        int                     last_error = 0;
@@ -157,7 +162,8 @@ xfs_inode_ag_iterator(
        for (ag = 0; ag < mp->m_sb.sb_agcount; ag++) {
                if (!mp->m_perag[ag].pag_ici_init)
                        continue;
-                error = xfs_inode_ag_walk(mp, ag, execute, flags, tag);
+                error = xfs_inode_ag_walk(mp, ag, execute, flags, tag,
+                                                exclusive);
                if (error) {
                        last_error = error;
                        if (error == EFSCORRUPTED)
@@ -174,30 +180,31 @@ xfs_sync_inode_valid(
        struct xfs_perag        *pag)
 {
        struct inode            *inode = VFS_I(ip);
+        int                     error = EFSCORRUPTED;
        /* nothing to sync during shutdown */
-        if (XFS_FORCED_SHUTDOWN(ip->i_mount)) {
+        if (XFS_FORCED_SHUTDOWN(ip->i_mount))
-                read_unlock(&pag->pag_ici_lock);
+                goto out_unlock;
-                return EFSCORRUPTED;
-        }
-        /*
+        /* avoid new or reclaimable inodes. Leave for reclaim code to flush */
-         * If we can't get a reference on the inode, it must be in reclaim.
+        error = ENOENT;
-         * Leave it for the reclaim code to flush. Also avoid inodes that
+        if (xfs_iflags_test(ip, XFS_INEW | XFS_IRECLAIMABLE | XFS_IRECLAIM))
-         * haven't been fully initialised.
+                goto out_unlock;
-         */
-        if (!igrab(inode)) {
-                read_unlock(&pag->pag_ici_lock);
-                return ENOENT;
-        }
-        read_unlock(&pag->pag_ici_lock);
-        if (is_bad_inode(inode) || xfs_iflags_test(ip, XFS_INEW)) {
+        /* If we can't grab the inode, it must on it's way to reclaim. */
+        if (!igrab(inode))
+                goto out_unlock;
+        if (is_bad_inode(inode)) {
                IRELE(ip);
-                return ENOENT;
+                goto out_unlock;
        }
-        return 0;
+        /* inode is valid */
+        error = 0;
+out_unlock:
+        read_unlock(&pag->pag_ici_lock);
+        return error;
 }
 STATIC int
@@ -282,7 +289,7 @@ xfs_sync_data(
        ASSERT((flags & ~(SYNC_TRYLOCK|SYNC_WAIT)) == 0);
        error = xfs_inode_ag_iterator(mp, xfs_sync_inode_data, flags,
-                                      XFS_ICI_NO_TAG);
+                                      XFS_ICI_NO_TAG, 0);
        if (error)
                return XFS_ERROR(error);
@@ -304,7 +311,7 @@ xfs_sync_attr(
        ASSERT((flags & ~SYNC_WAIT) == 0);
        return xfs_inode_ag_iterator(mp, xfs_sync_inode_attr, flags,
-                                     XFS_ICI_NO_TAG);
+                                     XFS_ICI_NO_TAG, 0);
 }
 STATIC int
@@ -664,60 +671,6 @@ xfs_syncd_stop(
        kthread_stop(mp->m_sync_task);
 }
-STATIC int
-xfs_reclaim_inode(
-        xfs_inode_t     *ip,
-        int             sync_mode)
-{
-        xfs_perag_t     *pag = xfs_get_perag(ip->i_mount, ip->i_ino);
-        /* The hash lock here protects a thread in xfs_iget_core from
-         * racing with us on linking the inode back with a vnode.
-         * Once we have the XFS_IRECLAIM flag set it will not touch
-         * us.
-         */
-        write_lock(&pag->pag_ici_lock);
-        spin_lock(&ip->i_flags_lock);
-        if (__xfs_iflags_test(ip, XFS_IRECLAIM) ||
-            !__xfs_iflags_test(ip, XFS_IRECLAIMABLE)) {
-                spin_unlock(&ip->i_flags_lock);
-                write_unlock(&pag->pag_ici_lock);
-                return -EAGAIN;
-        }
-        __xfs_iflags_set(ip, XFS_IRECLAIM);
-        spin_unlock(&ip->i_flags_lock);
-        write_unlock(&pag->pag_ici_lock);
-        xfs_put_perag(ip->i_mount, pag);
-        /*
-         * If the inode is still dirty, then flush it out.  If the inode
-         * is not in the AIL, then it will be OK to flush it delwri as
-         * long as xfs_iflush() does not keep any references to the inode.
-         * We leave that decision up to xfs_iflush() since it has the
-         * knowledge of whether it's OK to simply do a delwri flush of
-         * the inode or whether we need to wait until the inode is
-         * pulled from the AIL.
-         * We get the flush lock regardless, though, just to make sure
-         * we don't free it while it is being flushed.
-         */
-        xfs_ilock(ip, XFS_ILOCK_EXCL);
-        xfs_iflock(ip);
-        /*
-         * In the case of a forced shutdown we rely on xfs_iflush() to
-         * wait for the inode to be unpinned before returning an error.
-         */
-        if (!is_bad_inode(VFS_I(ip)) && xfs_iflush(ip, sync_mode) == 0) {
-                /* synchronize with xfs_iflush_done */
-                xfs_iflock(ip);
-                xfs_ifunlock(ip);
-        }
-        xfs_iunlock(ip, XFS_ILOCK_EXCL);
-        xfs_ireclaim(ip);
-        return 0;
-}
 void
 __xfs_inode_set_reclaim_tag(
        struct xfs_perag        *pag,
@@ -760,19 +713,55 @@ __xfs_inode_clear_reclaim_tag(
 }
 STATIC int
-xfs_reclaim_inode_now(
+xfs_reclaim_inode(
        struct xfs_inode        *ip,
        struct xfs_perag        *pag,
-        int                     flags)
+        int                     sync_mode)
 {
-        /* ignore if already under reclaim */
+        /*
-        if (xfs_iflags_test(ip, XFS_IRECLAIM)) {
+         * The radix tree lock here protects a thread in xfs_iget from racing
-                read_unlock(&pag->pag_ici_lock);
+         * with us starting reclaim on the inode.  Once we have the
+         * XFS_IRECLAIM flag set it will not touch us.
+         */
+        spin_lock(&ip->i_flags_lock);
+        ASSERT_ALWAYS(__xfs_iflags_test(ip, XFS_IRECLAIMABLE));
+        if (__xfs_iflags_test(ip, XFS_IRECLAIM)) {
+                /* ignore as it is already under reclaim */
+                spin_unlock(&ip->i_flags_lock);
+                write_unlock(&pag->pag_ici_lock);
                return 0;
        }
-        read_unlock(&pag->pag_ici_lock);
+        __xfs_iflags_set(ip, XFS_IRECLAIM);
+        spin_unlock(&ip->i_flags_lock);
+        write_unlock(&pag->pag_ici_lock);
-        return xfs_reclaim_inode(ip, flags);
+        /*
+         * If the inode is still dirty, then flush it out.  If the inode
+         * is not in the AIL, then it will be OK to flush it delwri as
+         * long as xfs_iflush() does not keep any references to the inode.
+         * We leave that decision up to xfs_iflush() since it has the
+         * knowledge of whether it's OK to simply do a delwri flush of
+         * the inode or whether we need to wait until the inode is
+         * pulled from the AIL.
+         * We get the flush lock regardless, though, just to make sure
+         * we don't free it while it is being flushed.
+         */
+        xfs_ilock(ip, XFS_ILOCK_EXCL);
+        xfs_iflock(ip);
+        /*
+         * In the case of a forced shutdown we rely on xfs_iflush() to
+         * wait for the inode to be unpinned before returning an error.
+         */
+        if (!is_bad_inode(VFS_I(ip)) && xfs_iflush(ip, sync_mode) == 0) {
+                /* synchronize with xfs_iflush_done */
+                xfs_iflock(ip);
+                xfs_ifunlock(ip);
+        }
+        xfs_iunlock(ip, XFS_ILOCK_EXCL);
+        xfs_ireclaim(ip);
+        return 0;
 }
 int
@@ -780,6 +769,6 @@ xfs_reclaim_inodes(
        xfs_mount_t     *mp,
        int             mode)
 {
-        return xfs_inode_ag_iterator(mp, xfs_reclaim_inode_now, mode,
+        return xfs_inode_ag_iterator(mp, xfs_reclaim_inode, mode,
-                                        XFS_ICI_RECLAIM_TAG);
+                                        XFS_ICI_RECLAIM_TAG, 1);
 }
diff --git a/fs/xfs/linux-2.6/xfs_sync.h b/fs/xfs/linux-2.6/xfs_sync.h
index a500b4d91835..ea932b43335d 100644
--- a/fs/xfs/linux-2.6/xfs_sync.h
+++ b/fs/xfs/linux-2.6/xfs_sync.h
@@ -54,6 +54,6 @@ void __xfs_inode_clear_reclaim_tag(struct xfs_mount *mp, struct xfs_perag *pag,
 int xfs_sync_inode_valid(struct xfs_inode *ip, struct xfs_perag *pag);
 int xfs_inode_ag_iterator(struct xfs_mount *mp,
        int (*execute)(struct xfs_inode *ip, struct xfs_perag *pag, int flags),
-        int flags, int tag);
+        int flags, int tag, int write_lock);
 #endif
diff --git a/fs/xfs/linux-2.6/xfs_trace.h b/fs/xfs/linux-2.6/xfs_trace.h
index c40834bdee58..c22a608321a3 100644
--- a/fs/xfs/linux-2.6/xfs_trace.h
+++ b/fs/xfs/linux-2.6/xfs_trace.h
@@ -33,51 +33,55 @@ struct xfs_dquot;
 struct xlog_ticket;
 struct log;
+DECLARE_EVENT_CLASS(xfs_attr_list_class,
+        TP_PROTO(struct xfs_attr_list_context *ctx),
+        TP_ARGS(ctx),
+        TP_STRUCT__entry(
+                __field(dev_t, dev)
+                __field(xfs_ino_t, ino)
+                __field(u32, hashval)
+                __field(u32, blkno)
+                __field(u32, offset)
+                __field(void *, alist)
+                __field(int, bufsize)
+                __field(int, count)
+                __field(int, firstu)
+                __field(int, dupcnt)
+                __field(int, flags)
+        ),
+        TP_fast_assign(
+                __entry->dev = VFS_I(ctx->dp)->i_sb->s_dev;
+                __entry->ino = ctx->dp->i_ino;
+                __entry->hashval = ctx->cursor->hashval;
+                __entry->blkno = ctx->cursor->blkno;
+                __entry->offset = ctx->cursor->offset;
+                __entry->alist = ctx->alist;
+                __entry->bufsize = ctx->bufsize;
+                __entry->count = ctx->count;
+                __entry->firstu = ctx->firstu;
+                __entry->flags = ctx->flags;
+        ),
+        TP_printk("dev %d:%d ino 0x%llx cursor h/b/o 0x%x/0x%x/%u dupcnt %u "
+                  "alist 0x%p size %u count %u firstu %u flags %d %s",
+                  MAJOR(__entry->dev), MINOR(__entry->dev),
+                   __entry->ino,
+                   __entry->hashval,
+                   __entry->blkno,
+                   __entry->offset,
+                   __entry->dupcnt,
+                   __entry->alist,
+                   __entry->bufsize,
+                   __entry->count,
+                   __entry->firstu,
+                   __entry->flags,
+                   __print_flags(__entry->flags, "|", XFS_ATTR_FLAGS)
+        )
+)
 #define DEFINE_ATTR_LIST_EVENT(name) \
-TRACE_EVENT(name, \
+DEFINE_EVENT(xfs_attr_list_class, name, \
        TP_PROTO(struct xfs_attr_list_context *ctx), \
-        TP_ARGS(ctx), \
+        TP_ARGS(ctx))
-        TP_STRUCT__entry( \
-                __field(dev_t, dev) \
-                __field(xfs_ino_t, ino) \
-                __field(u32, hashval) \
-                __field(u32, blkno) \
-                __field(u32, offset) \
-                __field(void *, alist) \
-                __field(int, bufsize) \
-                __field(int, count) \
-                __field(int, firstu) \
-                __field(int, dupcnt) \
-                __field(int, flags) \
-        ), \
-        TP_fast_assign( \
-                __entry->dev = VFS_I(ctx->dp)->i_sb->s_dev; \
-                __entry->ino = ctx->dp->i_ino; \
-                __entry->hashval = ctx->cursor->hashval; \
-                __entry->blkno = ctx->cursor->blkno; \
-                __entry->offset = ctx->cursor->offset; \
-                __entry->alist = ctx->alist; \
-                __entry->bufsize = ctx->bufsize; \
-                __entry->count = ctx->count; \
-                __entry->firstu = ctx->firstu; \
-                __entry->flags = ctx->flags; \
-        ), \
-        TP_printk("dev %d:%d ino 0x%llx cursor h/b/o 0x%x/0x%x/%u dupcnt %u " \
-                  "alist 0x%p size %u count %u firstu %u flags %d %s", \
-                  MAJOR(__entry->dev), MINOR(__entry->dev), \
-                   __entry->ino, \
-                   __entry->hashval, \
-                   __entry->blkno, \
-                   __entry->offset, \
-                   __entry->dupcnt, \
-                   __entry->alist, \
-                   __entry->bufsize, \
-                   __entry->count, \
-                   __entry->firstu, \
-                   __entry->flags, \
-                   __print_flags(__entry->flags, "|", XFS_ATTR_FLAGS) \
-        ) \
-)
 DEFINE_ATTR_LIST_EVENT(xfs_attr_list_sf);
 DEFINE_ATTR_LIST_EVENT(xfs_attr_list_sf_all);
 DEFINE_ATTR_LIST_EVENT(xfs_attr_list_leaf);
@@ -178,91 +182,99 @@ TRACE_EVENT(xfs_iext_insert,
                  (char *)__entry->caller_ip)
 );
+DECLARE_EVENT_CLASS(xfs_bmap_class,
+        TP_PROTO(struct xfs_inode *ip, xfs_extnum_t idx, int state,
+                 unsigned long caller_ip),
+        TP_ARGS(ip, idx, state, caller_ip),
+        TP_STRUCT__entry(
+                __field(dev_t, dev)
+                __field(xfs_ino_t, ino)
+                __field(xfs_extnum_t, idx)
+                __field(xfs_fileoff_t, startoff)
+                __field(xfs_fsblock_t, startblock)
+                __field(xfs_filblks_t, blockcount)
+                __field(xfs_exntst_t, state)
+                __field(int, bmap_state)
+                __field(unsigned long, caller_ip)
+        ),
+        TP_fast_assign(
+                struct xfs_ifork        *ifp = (state & BMAP_ATTRFORK) ?
+                                                ip->i_afp : &ip->i_df;
+                struct xfs_bmbt_irec    r;
+                xfs_bmbt_get_all(xfs_iext_get_ext(ifp, idx), &r);
+                __entry->dev = VFS_I(ip)->i_sb->s_dev;
+                __entry->ino = ip->i_ino;
+                __entry->idx = idx;
+                __entry->startoff = r.br_startoff;
+                __entry->startblock = r.br_startblock;
+                __entry->blockcount = r.br_blockcount;
+                __entry->state = r.br_state;
+                __entry->bmap_state = state;
+                __entry->caller_ip = caller_ip;
+        ),
+        TP_printk("dev %d:%d ino 0x%llx state %s idx %ld "
+                  "offset %lld block %s count %lld flag %d caller %pf",
+                  MAJOR(__entry->dev), MINOR(__entry->dev),
+                  __entry->ino,
+                  __print_flags(__entry->bmap_state, "|", XFS_BMAP_EXT_FLAGS),
+                  (long)__entry->idx,
+                  __entry->startoff,
+                  xfs_fmtfsblock(__entry->startblock),
+                  __entry->blockcount,
+                  __entry->state,
+                  (char *)__entry->caller_ip)
+)
 #define DEFINE_BMAP_EVENT(name) \
-TRACE_EVENT(name, \
+DEFINE_EVENT(xfs_bmap_class, name, \
        TP_PROTO(struct xfs_inode *ip, xfs_extnum_t idx, int state, \
                 unsigned long caller_ip), \
-        TP_ARGS(ip, idx, state, caller_ip), \
+        TP_ARGS(ip, idx, state, caller_ip))
-        TP_STRUCT__entry( \
-                __field(dev_t, dev) \
-                __field(xfs_ino_t, ino) \
-                __field(xfs_extnum_t, idx) \
-                __field(xfs_fileoff_t, startoff) \
-                __field(xfs_fsblock_t, startblock) \
-                __field(xfs_filblks_t, blockcount) \
-                __field(xfs_exntst_t, state) \
-                __field(int, bmap_state) \
-                __field(unsigned long, caller_ip) \
-        ), \
-        TP_fast_assign( \
-                struct xfs_ifork        *ifp = (state & BMAP_ATTRFORK) ? \
-                                                ip->i_afp : &ip->i_df; \
-                struct xfs_bmbt_irec    r; \
-        \
-                xfs_bmbt_get_all(xfs_iext_get_ext(ifp, idx), &r); \
-                __entry->dev = VFS_I(ip)->i_sb->s_dev; \
-                __entry->ino = ip->i_ino; \
-                __entry->idx = idx; \
-                __entry->startoff = r.br_startoff; \
-                __entry->startblock = r.br_startblock; \
-                __entry->blockcount = r.br_blockcount; \
-                __entry->state = r.br_state; \
-                __entry->bmap_state = state; \
-                __entry->caller_ip = caller_ip; \
-        ), \
-        TP_printk("dev %d:%d ino 0x%llx state %s idx %ld " \
-                  "offset %lld block %s count %lld flag %d caller %pf", \
-                  MAJOR(__entry->dev), MINOR(__entry->dev), \
-                  __entry->ino, \
-                  __print_flags(__entry->bmap_state, "|", XFS_BMAP_EXT_FLAGS), \
-                  (long)__entry->idx, \
-                  __entry->startoff, \
-                  xfs_fmtfsblock(__entry->startblock), \
-                  __entry->blockcount, \
-                  __entry->state, \
-                  (char *)__entry->caller_ip) \
-)
 DEFINE_BMAP_EVENT(xfs_iext_remove);
 DEFINE_BMAP_EVENT(xfs_bmap_pre_update);
 DEFINE_BMAP_EVENT(xfs_bmap_post_update);
 DEFINE_BMAP_EVENT(xfs_extlist);
-#define DEFINE_BUF_EVENT(tname) \
+DECLARE_EVENT_CLASS(xfs_buf_class,
-TRACE_EVENT(tname, \
+        TP_PROTO(struct xfs_buf *bp, unsigned long caller_ip),
-        TP_PROTO(struct xfs_buf *bp, unsigned long caller_ip), \
+        TP_ARGS(bp, caller_ip),
-        TP_ARGS(bp, caller_ip), \
+        TP_STRUCT__entry(
-        TP_STRUCT__entry( \
+                __field(dev_t, dev)
-                __field(dev_t, dev) \
+                __field(xfs_daddr_t, bno)
-                __field(xfs_daddr_t, bno) \
+                __field(size_t, buffer_length)
-                __field(size_t, buffer_length) \
+                __field(int, hold)
-                __field(int, hold) \
+                __field(int, pincount)
-                __field(int, pincount) \
+                __field(unsigned, lockval)
-                __field(unsigned, lockval) \
+                __field(unsigned, flags)
-                __field(unsigned, flags) \
+                __field(unsigned long, caller_ip)
-                __field(unsigned long, caller_ip) \
+        ),
-        ), \
+        TP_fast_assign(
-        TP_fast_assign( \
+                __entry->dev = bp->b_target->bt_dev;
-                __entry->dev = bp->b_target->bt_dev; \
+                __entry->bno = bp->b_bn;
-                __entry->bno = bp->b_bn; \
+                __entry->buffer_length = bp->b_buffer_length;
-                __entry->buffer_length = bp->b_buffer_length; \
+                __entry->hold = atomic_read(&bp->b_hold);
-                __entry->hold = atomic_read(&bp->b_hold); \
+                __entry->pincount = atomic_read(&bp->b_pin_count);
-                __entry->pincount = atomic_read(&bp->b_pin_count); \
+                __entry->lockval = xfs_buf_lock_value(bp);
-                __entry->lockval = xfs_buf_lock_value(bp); \
+                __entry->flags = bp->b_flags;
-                __entry->flags = bp->b_flags; \
+                __entry->caller_ip = caller_ip;
-                __entry->caller_ip = caller_ip; \
+        ),
-        ), \
+        TP_printk("dev %d:%d bno 0x%llx len 0x%zx hold %d pincount %d "
-        TP_printk("dev %d:%d bno 0x%llx len 0x%zx hold %d pincount %d " \
+                  "lock %d flags %s caller %pf",
-                  "lock %d flags %s caller %pf", \
+                  MAJOR(__entry->dev), MINOR(__entry->dev),
-                  MAJOR(__entry->dev), MINOR(__entry->dev), \
+                  (unsigned long long)__entry->bno,
-                  (unsigned long long)__entry->bno, \
+                  __entry->buffer_length,
-                  __entry->buffer_length, \
+                  __entry->hold,
-                  __entry->hold, \
+                  __entry->pincount,
-                  __entry->pincount, \
+                  __entry->lockval,
-                  __entry->lockval, \
+                  __print_flags(__entry->flags, "|", XFS_BUF_FLAGS),
-                  __print_flags(__entry->flags, "|", XFS_BUF_FLAGS), \
+                  (void *)__entry->caller_ip)
-                  (void *)__entry->caller_ip) \
 )
+#define DEFINE_BUF_EVENT(name) \
+DEFINE_EVENT(xfs_buf_class, name, \
+        TP_PROTO(struct xfs_buf *bp, unsigned long caller_ip), \
+        TP_ARGS(bp, caller_ip))
 DEFINE_BUF_EVENT(xfs_buf_init);
 DEFINE_BUF_EVENT(xfs_buf_free);
 DEFINE_BUF_EVENT(xfs_buf_hold);
@@ -299,41 +311,45 @@ DEFINE_BUF_EVENT(xfs_reset_dqcounts);
 DEFINE_BUF_EVENT(xfs_inode_item_push);
 /* pass flags explicitly */
-#define DEFINE_BUF_FLAGS_EVENT(tname) \
+DECLARE_EVENT_CLASS(xfs_buf_flags_class,
-TRACE_EVENT(tname, \
+        TP_PROTO(struct xfs_buf *bp, unsigned flags, unsigned long caller_ip),
-        TP_PROTO(struct xfs_buf *bp, unsigned flags, unsigned long caller_ip), \
+        TP_ARGS(bp, flags, caller_ip),
-        TP_ARGS(bp, flags, caller_ip), \
+        TP_STRUCT__entry(
-        TP_STRUCT__entry( \
+                __field(dev_t, dev)
-                __field(dev_t, dev) \
+                __field(xfs_daddr_t, bno)
-                __field(xfs_daddr_t, bno) \
+                __field(size_t, buffer_length)
-                __field(size_t, buffer_length) \
+                __field(int, hold)
-                __field(int, hold) \
+                __field(int, pincount)
-                __field(int, pincount) \
+                __field(unsigned, lockval)
-                __field(unsigned, lockval) \
+                __field(unsigned, flags)
-                __field(unsigned, flags) \
+                __field(unsigned long, caller_ip)
-                __field(unsigned long, caller_ip) \
+        ),
-        ), \
+        TP_fast_assign(
-        TP_fast_assign( \
+                __entry->dev = bp->b_target->bt_dev;
-                __entry->dev = bp->b_target->bt_dev; \
+                __entry->bno = bp->b_bn;
-                __entry->bno = bp->b_bn; \
+                __entry->buffer_length = bp->b_buffer_length;
-                __entry->buffer_length = bp->b_buffer_length; \
+                __entry->flags = flags;
-                __entry->flags = flags; \
+                __entry->hold = atomic_read(&bp->b_hold);
-                __entry->hold = atomic_read(&bp->b_hold); \
+                __entry->pincount = atomic_read(&bp->b_pin_count);
-                __entry->pincount = atomic_read(&bp->b_pin_count); \
+                __entry->lockval = xfs_buf_lock_value(bp);
-                __entry->lockval = xfs_buf_lock_value(bp); \
+                __entry->caller_ip = caller_ip;
-                __entry->caller_ip = caller_ip; \
+        ),
-        ), \
+        TP_printk("dev %d:%d bno 0x%llx len 0x%zx hold %d pincount %d "
-        TP_printk("dev %d:%d bno 0x%llx len 0x%zx hold %d pincount %d " \
+                  "lock %d flags %s caller %pf",
-                  "lock %d flags %s caller %pf", \
+                  MAJOR(__entry->dev), MINOR(__entry->dev),
-                  MAJOR(__entry->dev), MINOR(__entry->dev), \
+                  (unsigned long long)__entry->bno,
-                  (unsigned long long)__entry->bno, \
+                  __entry->buffer_length,
-                  __entry->buffer_length, \
+                  __entry->hold,
-                  __entry->hold, \
+                  __entry->pincount,
-                  __entry->pincount, \
+                  __entry->lockval,
-                  __entry->lockval, \
+                  __print_flags(__entry->flags, "|", XFS_BUF_FLAGS),
-                  __print_flags(__entry->flags, "|", XFS_BUF_FLAGS), \
+                  (void *)__entry->caller_ip)
-                  (void *)__entry->caller_ip) \
 )
+#define DEFINE_BUF_FLAGS_EVENT(name) \
+DEFINE_EVENT(xfs_buf_flags_class, name, \
+        TP_PROTO(struct xfs_buf *bp, unsigned flags, unsigned long caller_ip), \
+        TP_ARGS(bp, flags, caller_ip))
 DEFINE_BUF_FLAGS_EVENT(xfs_buf_find);
 DEFINE_BUF_FLAGS_EVENT(xfs_buf_get);
 DEFINE_BUF_FLAGS_EVENT(xfs_buf_read);
@@ -376,55 +392,58 @@ TRACE_EVENT(xfs_buf_ioerror,
                  (void *)__entry->caller_ip)
 );
-#define DEFINE_BUF_ITEM_EVENT(tname) \
+DECLARE_EVENT_CLASS(xfs_buf_item_class,
-TRACE_EVENT(tname, \
+        TP_PROTO(struct xfs_buf_log_item *bip),
-        TP_PROTO(struct xfs_buf_log_item *bip), \
+        TP_ARGS(bip),
-        TP_ARGS(bip), \
+        TP_STRUCT__entry(
-        TP_STRUCT__entry( \
+                __field(dev_t, dev)
-                __field(dev_t, dev) \
+                __field(xfs_daddr_t, buf_bno)
-                __field(xfs_daddr_t, buf_bno) \
+                __field(size_t, buf_len)
-                __field(size_t, buf_len) \
+                __field(int, buf_hold)
-                __field(int, buf_hold) \
+                __field(int, buf_pincount)
-                __field(int, buf_pincount) \
+                __field(int, buf_lockval)
-                __field(int, buf_lockval) \
+                __field(unsigned, buf_flags)
-                __field(unsigned, buf_flags) \
+                __field(unsigned, bli_recur)
-                __field(unsigned, bli_recur) \
+                __field(int, bli_refcount)
-                __field(int, bli_refcount) \
+                __field(unsigned, bli_flags)
-                __field(unsigned, bli_flags) \
+                __field(void *, li_desc)
-                __field(void *, li_desc) \
+                __field(unsigned, li_flags)
-                __field(unsigned, li_flags) \
+        ),
-        ), \
+        TP_fast_assign(
-        TP_fast_assign( \
+                __entry->dev = bip->bli_buf->b_target->bt_dev;
-                __entry->dev = bip->bli_buf->b_target->bt_dev; \
+                __entry->bli_flags = bip->bli_flags;
-                __entry->bli_flags = bip->bli_flags; \
+                __entry->bli_recur = bip->bli_recur;
-                __entry->bli_recur = bip->bli_recur; \
+                __entry->bli_refcount = atomic_read(&bip->bli_refcount);
-                __entry->bli_refcount = atomic_read(&bip->bli_refcount); \
+                __entry->buf_bno = bip->bli_buf->b_bn;
-                __entry->buf_bno = bip->bli_buf->b_bn; \
+                __entry->buf_len = bip->bli_buf->b_buffer_length;
-                __entry->buf_len = bip->bli_buf->b_buffer_length; \
+                __entry->buf_flags = bip->bli_buf->b_flags;
-                __entry->buf_flags = bip->bli_buf->b_flags; \
+                __entry->buf_hold = atomic_read(&bip->bli_buf->b_hold);
-                __entry->buf_hold = atomic_read(&bip->bli_buf->b_hold); \
+                __entry->buf_pincount = atomic_read(&bip->bli_buf->b_pin_count);
-                __entry->buf_pincount = \
+                __entry->buf_lockval = xfs_buf_lock_value(bip->bli_buf);
-                        atomic_read(&bip->bli_buf->b_pin_count); \
+                __entry->li_desc = bip->bli_item.li_desc;
-                __entry->buf_lockval = xfs_buf_lock_value(bip->bli_buf); \
+                __entry->li_flags = bip->bli_item.li_flags;
-                __entry->li_desc = bip->bli_item.li_desc; \
+        ),
-                __entry->li_flags = bip->bli_item.li_flags; \
+        TP_printk("dev %d:%d bno 0x%llx len 0x%zx hold %d pincount %d "
-        ), \
+                  "lock %d flags %s recur %d refcount %d bliflags %s "
-        TP_printk("dev %d:%d bno 0x%llx len 0x%zx hold %d pincount %d " \
+                  "lidesc 0x%p liflags %s",
-                  "lock %d flags %s recur %d refcount %d bliflags %s " \
+                  MAJOR(__entry->dev), MINOR(__entry->dev),
-                  "lidesc 0x%p liflags %s", \
+                  (unsigned long long)__entry->buf_bno,
-                  MAJOR(__entry->dev), MINOR(__entry->dev), \
+                  __entry->buf_len,
-                  (unsigned long long)__entry->buf_bno, \
+                  __entry->buf_hold,
-                  __entry->buf_len, \
+                  __entry->buf_pincount,
-                  __entry->buf_hold, \
+                  __entry->buf_lockval,
-                  __entry->buf_pincount, \
+                  __print_flags(__entry->buf_flags, "|", XFS_BUF_FLAGS),
-                  __entry->buf_lockval, \
+                  __entry->bli_recur,
-                  __print_flags(__entry->buf_flags, "|", XFS_BUF_FLAGS), \
+                  __entry->bli_refcount,
-                  __entry->bli_recur, \
+                  __print_flags(__entry->bli_flags, "|", XFS_BLI_FLAGS),
-                  __entry->bli_refcount, \
+                  __entry->li_desc,
-                  __print_flags(__entry->bli_flags, "|", XFS_BLI_FLAGS), \
+                  __print_flags(__entry->li_flags, "|", XFS_LI_FLAGS))
-                  __entry->li_desc, \
-                  __print_flags(__entry->li_flags, "|", XFS_LI_FLAGS)) \
 )
+#define DEFINE_BUF_ITEM_EVENT(name) \
+DEFINE_EVENT(xfs_buf_item_class, name, \
+        TP_PROTO(struct xfs_buf_log_item *bip), \
+        TP_ARGS(bip))
 DEFINE_BUF_ITEM_EVENT(xfs_buf_item_size);
 DEFINE_BUF_ITEM_EVENT(xfs_buf_item_size_stale);
 DEFINE_BUF_ITEM_EVENT(xfs_buf_item_format);
@@ -450,78 +469,90 @@ DEFINE_BUF_ITEM_EVENT(xfs_trans_bhold);
 DEFINE_BUF_ITEM_EVENT(xfs_trans_bhold_release);
 DEFINE_BUF_ITEM_EVENT(xfs_trans_binval);
+DECLARE_EVENT_CLASS(xfs_lock_class,
+        TP_PROTO(struct xfs_inode *ip, unsigned lock_flags,
+                 unsigned long caller_ip),
+        TP_ARGS(ip,  lock_flags, caller_ip),
+        TP_STRUCT__entry(
+                __field(dev_t, dev)
+                __field(xfs_ino_t, ino)
+                __field(int, lock_flags)
+                __field(unsigned long, caller_ip)
+        ),
+        TP_fast_assign(
+                __entry->dev = VFS_I(ip)->i_sb->s_dev;
+                __entry->ino = ip->i_ino;
+                __entry->lock_flags = lock_flags;
+                __entry->caller_ip = caller_ip;
+        ),
+        TP_printk("dev %d:%d ino 0x%llx flags %s caller %pf",
+                  MAJOR(__entry->dev), MINOR(__entry->dev),
+                  __entry->ino,
+                  __print_flags(__entry->lock_flags, "|", XFS_LOCK_FLAGS),
+                  (void *)__entry->caller_ip)
+)
 #define DEFINE_LOCK_EVENT(name) \
-TRACE_EVENT(name, \
+DEFINE_EVENT(xfs_lock_class, name, \
        TP_PROTO(struct xfs_inode *ip, unsigned lock_flags, \
                 unsigned long caller_ip), \
-        TP_ARGS(ip,  lock_flags, caller_ip), \
+        TP_ARGS(ip,  lock_flags, caller_ip))
-        TP_STRUCT__entry( \
-                __field(dev_t, dev) \
-                __field(xfs_ino_t, ino) \
-                __field(int, lock_flags) \
-                __field(unsigned long, caller_ip) \
-        ), \
-        TP_fast_assign( \
-                __entry->dev = VFS_I(ip)->i_sb->s_dev; \
-                __entry->ino = ip->i_ino; \
-                __entry->lock_flags = lock_flags; \
-                __entry->caller_ip = caller_ip; \
-        ), \
-        TP_printk("dev %d:%d ino 0x%llx flags %s caller %pf", \
-                  MAJOR(__entry->dev), MINOR(__entry->dev), \
-                  __entry->ino, \
-                  __print_flags(__entry->lock_flags, "|", XFS_LOCK_FLAGS), \
-                  (void *)__entry->caller_ip) \
-)
 DEFINE_LOCK_EVENT(xfs_ilock);
 DEFINE_LOCK_EVENT(xfs_ilock_nowait);
 DEFINE_LOCK_EVENT(xfs_ilock_demote);
 DEFINE_LOCK_EVENT(xfs_iunlock);
+DECLARE_EVENT_CLASS(xfs_iget_class,
+        TP_PROTO(struct xfs_inode *ip),
+        TP_ARGS(ip),
+        TP_STRUCT__entry(
+                __field(dev_t, dev)
+                __field(xfs_ino_t, ino)
+        ),
+        TP_fast_assign(
+                __entry->dev = VFS_I(ip)->i_sb->s_dev;
+                __entry->ino = ip->i_ino;
+        ),
+        TP_printk("dev %d:%d ino 0x%llx",
+                  MAJOR(__entry->dev), MINOR(__entry->dev),
+                  __entry->ino)
+)
 #define DEFINE_IGET_EVENT(name) \
-TRACE_EVENT(name, \
+DEFINE_EVENT(xfs_iget_class, name, \
        TP_PROTO(struct xfs_inode *ip), \
-        TP_ARGS(ip), \
+        TP_ARGS(ip))
-        TP_STRUCT__entry( \
-                __field(dev_t, dev) \
-                __field(xfs_ino_t, ino) \
-        ), \
-        TP_fast_assign( \
-                __entry->dev = VFS_I(ip)->i_sb->s_dev; \
-                __entry->ino = ip->i_ino; \
-        ), \
-        TP_printk("dev %d:%d ino 0x%llx", \
-                  MAJOR(__entry->dev), MINOR(__entry->dev), \
-                  __entry->ino) \
-)
 DEFINE_IGET_EVENT(xfs_iget_skip);
 DEFINE_IGET_EVENT(xfs_iget_reclaim);
 DEFINE_IGET_EVENT(xfs_iget_found);
 DEFINE_IGET_EVENT(xfs_iget_alloc);
+DECLARE_EVENT_CLASS(xfs_inode_class,
+        TP_PROTO(struct xfs_inode *ip, unsigned long caller_ip),
+        TP_ARGS(ip, caller_ip),
+        TP_STRUCT__entry(
+                __field(dev_t, dev)
+                __field(xfs_ino_t, ino)
+                __field(int, count)
+                __field(unsigned long, caller_ip)
+        ),
+        TP_fast_assign(
+                __entry->dev = VFS_I(ip)->i_sb->s_dev;
+                __entry->ino = ip->i_ino;
+                __entry->count = atomic_read(&VFS_I(ip)->i_count);
+                __entry->caller_ip = caller_ip;
+        ),
+        TP_printk("dev %d:%d ino 0x%llx count %d caller %pf",
+                  MAJOR(__entry->dev), MINOR(__entry->dev),
+                  __entry->ino,
+                  __entry->count,
+                  (char *)__entry->caller_ip)
+)
 #define DEFINE_INODE_EVENT(name) \
-TRACE_EVENT(name, \
+DEFINE_EVENT(xfs_inode_class, name, \
        TP_PROTO(struct xfs_inode *ip, unsigned long caller_ip), \
-        TP_ARGS(ip, caller_ip), \
+        TP_ARGS(ip, caller_ip))
-        TP_STRUCT__entry( \
-                __field(dev_t, dev) \
-                __field(xfs_ino_t, ino) \
-                __field(int, count) \
-                __field(unsigned long, caller_ip) \
-        ), \
-        TP_fast_assign( \
-                __entry->dev = VFS_I(ip)->i_sb->s_dev; \
-                __entry->ino = ip->i_ino; \
-                __entry->count = atomic_read(&VFS_I(ip)->i_count); \
-                __entry->caller_ip = caller_ip; \
-        ), \
-        TP_printk("dev %d:%d ino 0x%llx count %d caller %pf", \
-                  MAJOR(__entry->dev), MINOR(__entry->dev), \
-                  __entry->ino, \
-                  __entry->count, \
-                  (char *)__entry->caller_ip) \
-)
 DEFINE_INODE_EVENT(xfs_ihold);
 DEFINE_INODE_EVENT(xfs_irele);
 /* the old xfs_itrace_entry tracer - to be replaced by s.th. in the VFS */
@@ -529,55 +560,59 @@ DEFINE_INODE_EVENT(xfs_inode);
 #define xfs_itrace_entry(ip)    \
        trace_xfs_inode(ip, _THIS_IP_)
-#define DEFINE_DQUOT_EVENT(tname) \
+DECLARE_EVENT_CLASS(xfs_dquot_class,
-TRACE_EVENT(tname, \
+        TP_PROTO(struct xfs_dquot *dqp),
-        TP_PROTO(struct xfs_dquot *dqp), \
+        TP_ARGS(dqp),
-        TP_ARGS(dqp), \
+        TP_STRUCT__entry(
-        TP_STRUCT__entry( \
+                __field(dev_t, dev)
-                __field(dev_t, dev) \
+                __field(__be32, id)
-                __field(__be32, id) \
+                __field(unsigned, flags)
-                __field(unsigned, flags) \
+                __field(unsigned, nrefs)
-                __field(unsigned, nrefs) \
+                __field(unsigned long long, res_bcount)
-                __field(unsigned long long, res_bcount) \
+                __field(unsigned long long, bcount)
-                __field(unsigned long long, bcount) \
+                __field(unsigned long long, icount)
-                __field(unsigned long long, icount) \
+                __field(unsigned long long, blk_hardlimit)
-                __field(unsigned long long, blk_hardlimit) \
+                __field(unsigned long long, blk_softlimit)
-                __field(unsigned long long, blk_softlimit) \
+                __field(unsigned long long, ino_hardlimit)
-                __field(unsigned long long, ino_hardlimit) \
+                __field(unsigned long long, ino_softlimit)
-                __field(unsigned long long, ino_softlimit) \
-        ), \
-        TP_fast_assign( \
-                __entry->dev = dqp->q_mount->m_super->s_dev; \
-                __entry->id = dqp->q_core.d_id; \
-                __entry->flags = dqp->dq_flags; \
-                __entry->nrefs = dqp->q_nrefs; \
-                __entry->res_bcount = dqp->q_res_bcount; \
-                __entry->bcount = be64_to_cpu(dqp->q_core.d_bcount); \
-                __entry->icount = be64_to_cpu(dqp->q_core.d_icount); \
-                __entry->blk_hardlimit = \
-                        be64_to_cpu(dqp->q_core.d_blk_hardlimit); \
-                __entry->blk_softlimit = \
-                        be64_to_cpu(dqp->q_core.d_blk_softlimit); \
-                __entry->ino_hardlimit = \
-                        be64_to_cpu(dqp->q_core.d_ino_hardlimit); \
-                __entry->ino_softlimit = \
-                        be64_to_cpu(dqp->q_core.d_ino_softlimit); \
        ), \
-        TP_printk("dev %d:%d id 0x%x flags %s nrefs %u res_bc 0x%llx " \
+        TP_fast_assign(
-                  "bcnt 0x%llx [hard 0x%llx | soft 0x%llx] " \
+                __entry->dev = dqp->q_mount->m_super->s_dev;
-                  "icnt 0x%llx [hard 0x%llx | soft 0x%llx]", \
+                __entry->id = dqp->q_core.d_id;
-                  MAJOR(__entry->dev), MINOR(__entry->dev), \
+                __entry->flags = dqp->dq_flags;
-                  be32_to_cpu(__entry->id), \
+                __entry->nrefs = dqp->q_nrefs;
-                  __print_flags(__entry->flags, "|", XFS_DQ_FLAGS), \
+                __entry->res_bcount = dqp->q_res_bcount;
-                  __entry->nrefs, \
+                __entry->bcount = be64_to_cpu(dqp->q_core.d_bcount);
-                  __entry->res_bcount, \
+                __entry->icount = be64_to_cpu(dqp->q_core.d_icount);
-                  __entry->bcount, \
+                __entry->blk_hardlimit =
-                  __entry->blk_hardlimit, \
+                        be64_to_cpu(dqp->q_core.d_blk_hardlimit);
-                  __entry->blk_softlimit, \
+                __entry->blk_softlimit =
-                  __entry->icount, \
+                        be64_to_cpu(dqp->q_core.d_blk_softlimit);
-                  __entry->ino_hardlimit, \
+                __entry->ino_hardlimit =
-                  __entry->ino_softlimit) \
+                        be64_to_cpu(dqp->q_core.d_ino_hardlimit);
+                __entry->ino_softlimit =
+                        be64_to_cpu(dqp->q_core.d_ino_softlimit);
+        ),
+        TP_printk("dev %d:%d id 0x%x flags %s nrefs %u res_bc 0x%llx "
+                  "bcnt 0x%llx [hard 0x%llx | soft 0x%llx] "
+                  "icnt 0x%llx [hard 0x%llx | soft 0x%llx]",
+                  MAJOR(__entry->dev), MINOR(__entry->dev),
+                  be32_to_cpu(__entry->id),
+                  __print_flags(__entry->flags, "|", XFS_DQ_FLAGS),
+                  __entry->nrefs,
+                  __entry->res_bcount,
+                  __entry->bcount,
+                  __entry->blk_hardlimit,
+                  __entry->blk_softlimit,
+                  __entry->icount,
+                  __entry->ino_hardlimit,
+                  __entry->ino_softlimit)
 )
+#define DEFINE_DQUOT_EVENT(name) \
+DEFINE_EVENT(xfs_dquot_class, name, \
+        TP_PROTO(struct xfs_dquot *dqp), \
+        TP_ARGS(dqp))
 DEFINE_DQUOT_EVENT(xfs_dqadjust);
 DEFINE_DQUOT_EVENT(xfs_dqshake_dirty);
 DEFINE_DQUOT_EVENT(xfs_dqshake_unlink);
@@ -610,72 +645,75 @@ DEFINE_DQUOT_EVENT(xfs_dqflush_done);
 DEFINE_IGET_EVENT(xfs_dquot_dqalloc);
 DEFINE_IGET_EVENT(xfs_dquot_dqdetach);
+DECLARE_EVENT_CLASS(xfs_loggrant_class,
+        TP_PROTO(struct log *log, struct xlog_ticket *tic),
+        TP_ARGS(log, tic),
+        TP_STRUCT__entry(
+                __field(dev_t, dev)
+                __field(unsigned, trans_type)
+                __field(char, ocnt)
+                __field(char, cnt)
+                __field(int, curr_res)
+                __field(int, unit_res)
+                __field(unsigned int, flags)
+                __field(void *, reserve_headq)
+                __field(void *, write_headq)
+                __field(int, grant_reserve_cycle)
+                __field(int, grant_reserve_bytes)
+                __field(int, grant_write_cycle)
+                __field(int, grant_write_bytes)
+                __field(int, curr_cycle)
+                __field(int, curr_block)
+                __field(xfs_lsn_t, tail_lsn)
+        ),
+        TP_fast_assign(
+                __entry->dev = log->l_mp->m_super->s_dev;
+                __entry->trans_type = tic->t_trans_type;
+                __entry->ocnt = tic->t_ocnt;
+                __entry->cnt = tic->t_cnt;
+                __entry->curr_res = tic->t_curr_res;
+                __entry->unit_res = tic->t_unit_res;
+                __entry->flags = tic->t_flags;
+                __entry->reserve_headq = log->l_reserve_headq;
+                __entry->write_headq = log->l_write_headq;
+                __entry->grant_reserve_cycle = log->l_grant_reserve_cycle;
+                __entry->grant_reserve_bytes = log->l_grant_reserve_bytes;
+                __entry->grant_write_cycle = log->l_grant_write_cycle;
+                __entry->grant_write_bytes = log->l_grant_write_bytes;
+                __entry->curr_cycle = log->l_curr_cycle;
+                __entry->curr_block = log->l_curr_block;
+                __entry->tail_lsn = log->l_tail_lsn;
+        ),
+        TP_printk("dev %d:%d type %s t_ocnt %u t_cnt %u t_curr_res %u "
+                  "t_unit_res %u t_flags %s reserve_headq 0x%p "
+                  "write_headq 0x%p grant_reserve_cycle %d "
+                  "grant_reserve_bytes %d grant_write_cycle %d "
+                  "grant_write_bytes %d curr_cycle %d curr_block %d "
+                  "tail_cycle %d tail_block %d",
+                  MAJOR(__entry->dev), MINOR(__entry->dev),
+                  __print_symbolic(__entry->trans_type, XFS_TRANS_TYPES),
+                  __entry->ocnt,
+                  __entry->cnt,
+                  __entry->curr_res,
+                  __entry->unit_res,
+                  __print_flags(__entry->flags, "|", XLOG_TIC_FLAGS),
+                  __entry->reserve_headq,
+                  __entry->write_headq,
+                  __entry->grant_reserve_cycle,
+                  __entry->grant_reserve_bytes,
+                  __entry->grant_write_cycle,
+                  __entry->grant_write_bytes,
+                  __entry->curr_cycle,
+                  __entry->curr_block,
+                  CYCLE_LSN(__entry->tail_lsn),
+                  BLOCK_LSN(__entry->tail_lsn)
+        )
+)
-#define DEFINE_LOGGRANT_EVENT(tname) \
+#define DEFINE_LOGGRANT_EVENT(name) \
-TRACE_EVENT(tname, \
+DEFINE_EVENT(xfs_loggrant_class, name, \
        TP_PROTO(struct log *log, struct xlog_ticket *tic), \
-        TP_ARGS(log, tic), \
+        TP_ARGS(log, tic))
-        TP_STRUCT__entry( \
-                __field(dev_t, dev) \
-                __field(unsigned, trans_type) \
-                __field(char, ocnt) \
-                __field(char, cnt) \
-                __field(int, curr_res) \
-                __field(int, unit_res) \
-                __field(unsigned int, flags) \
-                __field(void *, reserve_headq) \
-                __field(void *, write_headq) \
-                __field(int, grant_reserve_cycle) \
-                __field(int, grant_reserve_bytes) \
-                __field(int, grant_write_cycle) \
-                __field(int, grant_write_bytes) \
-                __field(int, curr_cycle) \
-                __field(int, curr_block) \
-                __field(xfs_lsn_t, tail_lsn) \
-        ), \
-        TP_fast_assign( \
-                __entry->dev = log->l_mp->m_super->s_dev; \
-                __entry->trans_type = tic->t_trans_type; \
-                __entry->ocnt = tic->t_ocnt; \
-                __entry->cnt = tic->t_cnt; \
-                __entry->curr_res = tic->t_curr_res; \
-                __entry->unit_res = tic->t_unit_res; \
-                __entry->flags = tic->t_flags; \
-                __entry->reserve_headq = log->l_reserve_headq; \
-                __entry->write_headq = log->l_write_headq; \
-                __entry->grant_reserve_cycle = log->l_grant_reserve_cycle; \
-                __entry->grant_reserve_bytes = log->l_grant_reserve_bytes; \
-                __entry->grant_write_cycle = log->l_grant_write_cycle; \
-                __entry->grant_write_bytes = log->l_grant_write_bytes; \
-                __entry->curr_cycle = log->l_curr_cycle; \
-                __entry->curr_block = log->l_curr_block; \
-                __entry->tail_lsn = log->l_tail_lsn; \
-        ), \
-        TP_printk("dev %d:%d type %s t_ocnt %u t_cnt %u t_curr_res %u " \
-                  "t_unit_res %u t_flags %s reserve_headq 0x%p " \
-                  "write_headq 0x%p grant_reserve_cycle %d " \
-                  "grant_reserve_bytes %d grant_write_cycle %d " \
-                  "grant_write_bytes %d curr_cycle %d curr_block %d " \
-                  "tail_cycle %d tail_block %d", \
-                  MAJOR(__entry->dev), MINOR(__entry->dev), \
-                  __print_symbolic(__entry->trans_type, XFS_TRANS_TYPES), \
-                  __entry->ocnt, \
-                  __entry->cnt, \
-                  __entry->curr_res, \
-                  __entry->unit_res, \
-                  __print_flags(__entry->flags, "|", XLOG_TIC_FLAGS), \
-                  __entry->reserve_headq, \
-                  __entry->write_headq, \
-                  __entry->grant_reserve_cycle, \
-                  __entry->grant_reserve_bytes, \
-                  __entry->grant_write_cycle, \
-                  __entry->grant_write_bytes, \
-                  __entry->curr_cycle, \
-                  __entry->curr_block, \
-                  CYCLE_LSN(__entry->tail_lsn), \
-                  BLOCK_LSN(__entry->tail_lsn) \
-        ) \
-)
 DEFINE_LOGGRANT_EVENT(xfs_log_done_nonperm);
 DEFINE_LOGGRANT_EVENT(xfs_log_done_perm);
 DEFINE_LOGGRANT_EVENT(xfs_log_reserve);
@@ -815,7 +853,7 @@ TRACE_EVENT(name, \
        ), \
        TP_printk("dev %d:%d ino 0x%llx size 0x%llx new_size 0x%llx " \
                  "offset 0x%llx count %zd flags %s " \
-                  "startoff 0x%llx startblock 0x%llx blockcount 0x%llx", \
+                  "startoff 0x%llx startblock %s blockcount 0x%llx", \
                  MAJOR(__entry->dev), MINOR(__entry->dev), \
                  __entry->ino, \
                  __entry->size, \
@@ -824,7 +862,7 @@ TRACE_EVENT(name, \
                  __entry->count, \
                  __print_flags(__entry->flags, "|", BMAPI_FLAGS), \
                  __entry->startoff, \
-                  __entry->startblock, \
+                  xfs_fmtfsblock(__entry->startblock), \
                  __entry->blockcount) \
 )
 DEFINE_IOMAP_EVENT(xfs_iomap_enter);
@@ -897,28 +935,32 @@ TRACE_EVENT(xfs_itruncate_start,
                  __entry->toss_finish)
 );
+DECLARE_EVENT_CLASS(xfs_itrunc_class,
+        TP_PROTO(struct xfs_inode *ip, xfs_fsize_t new_size),
+        TP_ARGS(ip, new_size),
+        TP_STRUCT__entry(
+                __field(dev_t, dev)
+                __field(xfs_ino_t, ino)
+                __field(xfs_fsize_t, size)
+                __field(xfs_fsize_t, new_size)
+        ),
+        TP_fast_assign(
+                __entry->dev = VFS_I(ip)->i_sb->s_dev;
+                __entry->ino = ip->i_ino;
+                __entry->size = ip->i_d.di_size;
+                __entry->new_size = new_size;
+        ),
+        TP_printk("dev %d:%d ino 0x%llx size 0x%llx new_size 0x%llx",
+                  MAJOR(__entry->dev), MINOR(__entry->dev),
+                  __entry->ino,
+                  __entry->size,
+                  __entry->new_size)
+)
 #define DEFINE_ITRUNC_EVENT(name) \
-TRACE_EVENT(name, \
+DEFINE_EVENT(xfs_itrunc_class, name, \
        TP_PROTO(struct xfs_inode *ip, xfs_fsize_t new_size), \
-        TP_ARGS(ip, new_size), \
+        TP_ARGS(ip, new_size))
-        TP_STRUCT__entry( \
-                __field(dev_t, dev) \
-                __field(xfs_ino_t, ino) \
-                __field(xfs_fsize_t, size) \
-                __field(xfs_fsize_t, new_size) \
-        ), \
-        TP_fast_assign( \
-                __entry->dev = VFS_I(ip)->i_sb->s_dev; \
-                __entry->ino = ip->i_ino; \
-                __entry->size = ip->i_d.di_size; \
-                __entry->new_size = new_size; \
-        ), \
-        TP_printk("dev %d:%d ino 0x%llx size 0x%llx new_size 0x%llx", \
-                  MAJOR(__entry->dev), MINOR(__entry->dev), \
-                  __entry->ino, \
-                  __entry->size, \
-                  __entry->new_size) \
-)
 DEFINE_ITRUNC_EVENT(xfs_itruncate_finish_start);
 DEFINE_ITRUNC_EVENT(xfs_itruncate_finish_end);
@@ -1037,28 +1079,28 @@ TRACE_EVENT(xfs_alloc_unbusy,
 TRACE_EVENT(xfs_alloc_busysearch,
        TP_PROTO(struct xfs_mount *mp, xfs_agnumber_t agno, xfs_agblock_t agbno,
-                 xfs_extlen_t len, int found),
+                 xfs_extlen_t len, xfs_lsn_t lsn),
-        TP_ARGS(mp, agno, agbno, len, found),
+        TP_ARGS(mp, agno, agbno, len, lsn),
        TP_STRUCT__entry(
                __field(dev_t, dev)
                __field(xfs_agnumber_t, agno)
                __field(xfs_agblock_t, agbno)
                __field(xfs_extlen_t, len)
-                __field(int, found)
+                __field(xfs_lsn_t, lsn)
        ),
        TP_fast_assign(
                __entry->dev = mp->m_super->s_dev;
                __entry->agno = agno;
                __entry->agbno = agbno;
                __entry->len = len;
-                __entry->found = found;
+                __entry->lsn = lsn;
        ),
-        TP_printk("dev %d:%d agno %u agbno %u len %u %s",
+        TP_printk("dev %d:%d agno %u agbno %u len %u force lsn 0x%llx",
                  MAJOR(__entry->dev), MINOR(__entry->dev),
                  __entry->agno,
                  __entry->agbno,
                  __entry->len,
-                  __print_symbolic(__entry->found, XFS_BUSY_STATES))
+                  __entry->lsn)
 );
 TRACE_EVENT(xfs_agf,
@@ -1152,77 +1194,80 @@ TRACE_EVENT(xfs_free_extent,
 );
-#define DEFINE_ALLOC_EVENT(name) \
+DECLARE_EVENT_CLASS(xfs_alloc_class,
-TRACE_EVENT(name, \
+        TP_PROTO(struct xfs_alloc_arg *args),
-        TP_PROTO(struct xfs_alloc_arg *args), \
+        TP_ARGS(args),
-        TP_ARGS(args), \
+        TP_STRUCT__entry(
-        TP_STRUCT__entry( \
+                __field(dev_t, dev)
-                __field(dev_t, dev) \
+                __field(xfs_agnumber_t, agno)
-                __field(xfs_agnumber_t, agno) \
+                __field(xfs_agblock_t, agbno)
-                __field(xfs_agblock_t, agbno) \
+                __field(xfs_extlen_t, minlen)
-                __field(xfs_extlen_t, minlen) \
+                __field(xfs_extlen_t, maxlen)
-                __field(xfs_extlen_t, maxlen) \
+                __field(xfs_extlen_t, mod)
-                __field(xfs_extlen_t, mod) \
+                __field(xfs_extlen_t, prod)
-                __field(xfs_extlen_t, prod) \
+                __field(xfs_extlen_t, minleft)
-                __field(xfs_extlen_t, minleft) \
+                __field(xfs_extlen_t, total)
-                __field(xfs_extlen_t, total) \
+                __field(xfs_extlen_t, alignment)
-                __field(xfs_extlen_t, alignment) \
+                __field(xfs_extlen_t, minalignslop)
-                __field(xfs_extlen_t, minalignslop) \
+                __field(xfs_extlen_t, len)
-                __field(xfs_extlen_t, len) \
+                __field(short, type)
-                __field(short, type) \
+                __field(short, otype)
-                __field(short, otype) \
+                __field(char, wasdel)
-                __field(char, wasdel) \
+                __field(char, wasfromfl)
-                __field(char, wasfromfl) \
+                __field(char, isfl)
-                __field(char, isfl) \
+                __field(char, userdata)
-                __field(char, userdata) \
+                __field(xfs_fsblock_t, firstblock)
-                __field(xfs_fsblock_t, firstblock) \
+        ),
-        ), \
+        TP_fast_assign(
-        TP_fast_assign( \
+                __entry->dev = args->mp->m_super->s_dev;
-                __entry->dev = args->mp->m_super->s_dev; \
+                __entry->agno = args->agno;
-                __entry->agno = args->agno; \
+                __entry->agbno = args->agbno;
-                __entry->agbno = args->agbno; \
+                __entry->minlen = args->minlen;
-                __entry->minlen = args->minlen; \
+                __entry->maxlen = args->maxlen;
-                __entry->maxlen = args->maxlen; \
+                __entry->mod = args->mod;
-                __entry->mod = args->mod; \
+                __entry->prod = args->prod;
-                __entry->prod = args->prod; \
+                __entry->minleft = args->minleft;
-                __entry->minleft = args->minleft; \
+                __entry->total = args->total;
-                __entry->total = args->total; \
+                __entry->alignment = args->alignment;
-                __entry->alignment = args->alignment; \
+                __entry->minalignslop = args->minalignslop;
-                __entry->minalignslop = args->minalignslop; \
+                __entry->len = args->len;
-                __entry->len = args->len; \
+                __entry->type = args->type;
-                __entry->type = args->type; \
+                __entry->otype = args->otype;
-                __entry->otype = args->otype; \
+                __entry->wasdel = args->wasdel;
-                __entry->wasdel = args->wasdel; \
+                __entry->wasfromfl = args->wasfromfl;
-                __entry->wasfromfl = args->wasfromfl; \
+                __entry->isfl = args->isfl;
-                __entry->isfl = args->isfl; \
+                __entry->userdata = args->userdata;
-                __entry->userdata = args->userdata; \
+                __entry->firstblock = args->firstblock;
-                __entry->firstblock = args->firstblock; \
+        ),
-        ), \
+        TP_printk("dev %d:%d agno %u agbno %u minlen %u maxlen %u mod %u "
-        TP_printk("dev %d:%d agno %u agbno %u minlen %u maxlen %u mod %u " \
+                  "prod %u minleft %u total %u alignment %u minalignslop %u "
-                  "prod %u minleft %u total %u alignment %u minalignslop %u " \
+                  "len %u type %s otype %s wasdel %d wasfromfl %d isfl %d "
-                  "len %u type %s otype %s wasdel %d wasfromfl %d isfl %d " \
+                  "userdata %d firstblock 0x%llx",
-                  "userdata %d firstblock 0x%llx", \
+                  MAJOR(__entry->dev), MINOR(__entry->dev),
-                  MAJOR(__entry->dev), MINOR(__entry->dev), \
+                  __entry->agno,
-                  __entry->agno, \
+                  __entry->agbno,
-                  __entry->agbno, \
+                  __entry->minlen,
-                  __entry->minlen, \
+                  __entry->maxlen,
-                  __entry->maxlen, \
+                  __entry->mod,
-                  __entry->mod, \
+                  __entry->prod,
-                  __entry->prod, \
+                  __entry->minleft,
-                  __entry->minleft, \
+                  __entry->total,
-                  __entry->total, \
+                  __entry->alignment,
-                  __entry->alignment, \
+                  __entry->minalignslop,
-                  __entry->minalignslop, \
+                  __entry->len,
-                  __entry->len, \
+                  __print_symbolic(__entry->type, XFS_ALLOC_TYPES),
-                  __print_symbolic(__entry->type, XFS_ALLOC_TYPES), \
+                  __print_symbolic(__entry->otype, XFS_ALLOC_TYPES),
-                  __print_symbolic(__entry->otype, XFS_ALLOC_TYPES), \
+                  __entry->wasdel,
-                  __entry->wasdel, \
+                  __entry->wasfromfl,
-                  __entry->wasfromfl, \
+                  __entry->isfl,
-                  __entry->isfl, \
+                  __entry->userdata,
-                  __entry->userdata, \
+                  __entry->firstblock)
-                  __entry->firstblock) \
 )
+#define DEFINE_ALLOC_EVENT(name) \
+DEFINE_EVENT(xfs_alloc_class, name, \
+        TP_PROTO(struct xfs_alloc_arg *args), \
+        TP_ARGS(args))
 DEFINE_ALLOC_EVENT(xfs_alloc_exact_done);
 DEFINE_ALLOC_EVENT(xfs_alloc_exact_error);
 DEFINE_ALLOC_EVENT(xfs_alloc_near_nominleft);
@@ -1245,92 +1290,100 @@ DEFINE_ALLOC_EVENT(xfs_alloc_vextent_noagbp);
 DEFINE_ALLOC_EVENT(xfs_alloc_vextent_loopfailed);
 DEFINE_ALLOC_EVENT(xfs_alloc_vextent_allfailed);
-#define DEFINE_DIR2_TRACE(tname) \
+DECLARE_EVENT_CLASS(xfs_dir2_class,
-TRACE_EVENT(tname, \
+        TP_PROTO(struct xfs_da_args *args),
+        TP_ARGS(args),
+        TP_STRUCT__entry(
+                __field(dev_t, dev)
+                __field(xfs_ino_t, ino)
+                __dynamic_array(char, name, args->namelen)
+                __field(int, namelen)
+                __field(xfs_dahash_t, hashval)
+                __field(xfs_ino_t, inumber)
+                __field(int, op_flags)
+        ),
+        TP_fast_assign(
+                __entry->dev = VFS_I(args->dp)->i_sb->s_dev;
+                __entry->ino = args->dp->i_ino;
+                if (args->namelen)
+                        memcpy(__get_str(name), args->name, args->namelen);
+                __entry->namelen = args->namelen;
+                __entry->hashval = args->hashval;
+                __entry->inumber = args->inumber;
+                __entry->op_flags = args->op_flags;
+        ),
+        TP_printk("dev %d:%d ino 0x%llx name %.*s namelen %d hashval 0x%x "
+                  "inumber 0x%llx op_flags %s",
+                  MAJOR(__entry->dev), MINOR(__entry->dev),
+                  __entry->ino,
+                  __entry->namelen,
+                  __entry->namelen ? __get_str(name) : NULL,
+                  __entry->namelen,
+                  __entry->hashval,
+                  __entry->inumber,
+                  __print_flags(__entry->op_flags, "|", XFS_DA_OP_FLAGS))
+)
+#define DEFINE_DIR2_EVENT(name) \
+DEFINE_EVENT(xfs_dir2_class, name, \
        TP_PROTO(struct xfs_da_args *args), \
-        TP_ARGS(args), \
+        TP_ARGS(args))
-        TP_STRUCT__entry( \
+DEFINE_DIR2_EVENT(xfs_dir2_sf_addname);
-                __field(dev_t, dev) \
+DEFINE_DIR2_EVENT(xfs_dir2_sf_create);
-                __field(xfs_ino_t, ino) \
+DEFINE_DIR2_EVENT(xfs_dir2_sf_lookup);
-                __dynamic_array(char, name, args->namelen) \
+DEFINE_DIR2_EVENT(xfs_dir2_sf_replace);
-                __field(int, namelen) \
+DEFINE_DIR2_EVENT(xfs_dir2_sf_removename);
-                __field(xfs_dahash_t, hashval) \
+DEFINE_DIR2_EVENT(xfs_dir2_sf_toino4);
-                __field(xfs_ino_t, inumber) \
+DEFINE_DIR2_EVENT(xfs_dir2_sf_toino8);
-                __field(int, op_flags) \
+DEFINE_DIR2_EVENT(xfs_dir2_sf_to_block);
-        ), \
+DEFINE_DIR2_EVENT(xfs_dir2_block_addname);
-        TP_fast_assign( \
+DEFINE_DIR2_EVENT(xfs_dir2_block_lookup);
-                __entry->dev = VFS_I(args->dp)->i_sb->s_dev; \
+DEFINE_DIR2_EVENT(xfs_dir2_block_replace);
-                __entry->ino = args->dp->i_ino; \
+DEFINE_DIR2_EVENT(xfs_dir2_block_removename);
-                if (args->namelen) \
+DEFINE_DIR2_EVENT(xfs_dir2_block_to_sf);
-                        memcpy(__get_str(name), args->name, args->namelen); \
+DEFINE_DIR2_EVENT(xfs_dir2_block_to_leaf);
-                __entry->namelen = args->namelen; \
+DEFINE_DIR2_EVENT(xfs_dir2_leaf_addname);
-                __entry->hashval = args->hashval; \
+DEFINE_DIR2_EVENT(xfs_dir2_leaf_lookup);
-                __entry->inumber = args->inumber; \
+DEFINE_DIR2_EVENT(xfs_dir2_leaf_replace);
-                __entry->op_flags = args->op_flags; \
+DEFINE_DIR2_EVENT(xfs_dir2_leaf_removename);
-        ), \
+DEFINE_DIR2_EVENT(xfs_dir2_leaf_to_block);
-        TP_printk("dev %d:%d ino 0x%llx name %.*s namelen %d hashval 0x%x " \
+DEFINE_DIR2_EVENT(xfs_dir2_leaf_to_node);
-                  "inumber 0x%llx op_flags %s", \
+DEFINE_DIR2_EVENT(xfs_dir2_node_addname);
-                  MAJOR(__entry->dev), MINOR(__entry->dev), \
+DEFINE_DIR2_EVENT(xfs_dir2_node_lookup);
-                  __entry->ino, \
+DEFINE_DIR2_EVENT(xfs_dir2_node_replace);
-                  __entry->namelen, \
+DEFINE_DIR2_EVENT(xfs_dir2_node_removename);
-                  __entry->namelen ? __get_str(name) : NULL, \
+DEFINE_DIR2_EVENT(xfs_dir2_node_to_leaf);
-                  __entry->namelen, \
-                  __entry->hashval, \
+DECLARE_EVENT_CLASS(xfs_dir2_space_class,
-                  __entry->inumber, \
+        TP_PROTO(struct xfs_da_args *args, int idx),
-                  __print_flags(__entry->op_flags, "|", XFS_DA_OP_FLAGS)) \
+        TP_ARGS(args, idx),
+        TP_STRUCT__entry(
+                __field(dev_t, dev)
+                __field(xfs_ino_t, ino)
+                __field(int, op_flags)
+                __field(int, idx)
+        ),
+        TP_fast_assign(
+                __entry->dev = VFS_I(args->dp)->i_sb->s_dev;
+                __entry->ino = args->dp->i_ino;
+                __entry->op_flags = args->op_flags;
+                __entry->idx = idx;
+        ),
+        TP_printk("dev %d:%d ino 0x%llx op_flags %s index %d",
+                  MAJOR(__entry->dev), MINOR(__entry->dev),
+                  __entry->ino,
+                  __print_flags(__entry->op_flags, "|", XFS_DA_OP_FLAGS),
+                  __entry->idx)
 )
-DEFINE_DIR2_TRACE(xfs_dir2_sf_addname);
-DEFINE_DIR2_TRACE(xfs_dir2_sf_create);
-DEFINE_DIR2_TRACE(xfs_dir2_sf_lookup);
-DEFINE_DIR2_TRACE(xfs_dir2_sf_replace);
-DEFINE_DIR2_TRACE(xfs_dir2_sf_removename);
-DEFINE_DIR2_TRACE(xfs_dir2_sf_toino4);
-DEFINE_DIR2_TRACE(xfs_dir2_sf_toino8);
-DEFINE_DIR2_TRACE(xfs_dir2_sf_to_block);
-DEFINE_DIR2_TRACE(xfs_dir2_block_addname);
-DEFINE_DIR2_TRACE(xfs_dir2_block_lookup);
-DEFINE_DIR2_TRACE(xfs_dir2_block_replace);
-DEFINE_DIR2_TRACE(xfs_dir2_block_removename);
-DEFINE_DIR2_TRACE(xfs_dir2_block_to_sf);
-DEFINE_DIR2_TRACE(xfs_dir2_block_to_leaf);
-DEFINE_DIR2_TRACE(xfs_dir2_leaf_addname);
-DEFINE_DIR2_TRACE(xfs_dir2_leaf_lookup);
-DEFINE_DIR2_TRACE(xfs_dir2_leaf_replace);
-DEFINE_DIR2_TRACE(xfs_dir2_leaf_removename);
-DEFINE_DIR2_TRACE(xfs_dir2_leaf_to_block);
-DEFINE_DIR2_TRACE(xfs_dir2_leaf_to_node);
-DEFINE_DIR2_TRACE(xfs_dir2_node_addname);
-DEFINE_DIR2_TRACE(xfs_dir2_node_lookup);
-DEFINE_DIR2_TRACE(xfs_dir2_node_replace);
-DEFINE_DIR2_TRACE(xfs_dir2_node_removename);
-DEFINE_DIR2_TRACE(xfs_dir2_node_to_leaf);
-#define DEFINE_DIR2_SPACE_TRACE(tname) \
+#define DEFINE_DIR2_SPACE_EVENT(name) \
-TRACE_EVENT(tname, \
+DEFINE_EVENT(xfs_dir2_space_class, name, \
        TP_PROTO(struct xfs_da_args *args, int idx), \
-        TP_ARGS(args, idx), \
+        TP_ARGS(args, idx))
-        TP_STRUCT__entry( \
+DEFINE_DIR2_SPACE_EVENT(xfs_dir2_leafn_add);
-                __field(dev_t, dev) \
+DEFINE_DIR2_SPACE_EVENT(xfs_dir2_leafn_remove);
-                __field(xfs_ino_t, ino) \
+DEFINE_DIR2_SPACE_EVENT(xfs_dir2_grow_inode);
-                __field(int, op_flags) \
+DEFINE_DIR2_SPACE_EVENT(xfs_dir2_shrink_inode);
-                __field(int, idx) \
-        ), \
-        TP_fast_assign( \
-                __entry->dev = VFS_I(args->dp)->i_sb->s_dev; \
-                __entry->ino = args->dp->i_ino; \
-                __entry->op_flags = args->op_flags; \
-                __entry->idx = idx; \
-        ), \
-        TP_printk("dev %d:%d ino 0x%llx op_flags %s index %d", \
-                  MAJOR(__entry->dev), MINOR(__entry->dev), \
-                  __entry->ino, \
-                  __print_flags(__entry->op_flags, "|", XFS_DA_OP_FLAGS), \
-                  __entry->idx) \
-)
-DEFINE_DIR2_SPACE_TRACE(xfs_dir2_leafn_add);
-DEFINE_DIR2_SPACE_TRACE(xfs_dir2_leafn_remove);
-DEFINE_DIR2_SPACE_TRACE(xfs_dir2_grow_inode);
-DEFINE_DIR2_SPACE_TRACE(xfs_dir2_shrink_inode);
 TRACE_EVENT(xfs_dir2_leafn_moveents,
        TP_PROTO(struct xfs_da_args *args, int src_idx, int dst_idx, int count),
diff --git a/fs/xfs/quota/xfs_qm_syscalls.c b/fs/xfs/quota/xfs_qm_syscalls.c
index 71af76fe8a23..873e07e29074 100644
--- a/fs/xfs/quota/xfs_qm_syscalls.c
+++ b/fs/xfs/quota/xfs_qm_syscalls.c
@@ -891,7 +891,7 @@ xfs_qm_dqrele_all_inodes(
        uint             flags)
 {
        ASSERT(mp->m_quotainfo);
-        xfs_inode_ag_iterator(mp, xfs_dqrele_inode, flags, XFS_ICI_NO_TAG);
+        xfs_inode_ag_iterator(mp, xfs_dqrele_inode, flags, XFS_ICI_NO_TAG, 0);
 }
 /*------------------------------------------------------------------------*/
diff --git a/fs/xfs/xfs_alloc.c b/fs/xfs/xfs_alloc.c
index a1c65fc6d9c4..275b1f4f9430 100644
--- a/fs/xfs/xfs_alloc.c
+++ b/fs/xfs/xfs_alloc.c
@@ -2563,43 +2563,41 @@ xfs_alloc_search_busy(xfs_trans_t *tp,
        xfs_mount_t             *mp;
        xfs_perag_busy_t        *bsy;
        xfs_agblock_t           uend, bend;
-        xfs_lsn_t               lsn;
+        xfs_lsn_t               lsn = 0;
        int                     cnt;
        mp = tp->t_mountp;
        spin_lock(&mp->m_perag[agno].pagb_lock);
-        cnt = mp->m_perag[agno].pagb_count;
        uend = bno + len - 1;
-        /* search pagb_list for this slot, skipping open slots */
+        /*
-        for (bsy = mp->m_perag[agno].pagb_list; cnt; bsy++) {
+         * search pagb_list for this slot, skipping open slots. We have to
+         * search the entire array as there may be multiple overlaps and
+         * we have to get the most recent LSN for the log force to push out
+         * all the transactions that span the range.
+         */
+        for (cnt = 0; cnt < mp->m_perag[agno].pagb_count; cnt++) {
+                bsy = &mp->m_perag[agno].pagb_list[cnt];
+                if (!bsy->busy_tp)
+                        continue;
-                /*
+                bend = bsy->busy_start + bsy->busy_length - 1;
-                 * (start1,length1) within (start2, length2)
+                if (bno > bend || uend < bsy->busy_start)
-                 */
+                        continue;
-                if (bsy->busy_tp != NULL) {
-                        bend = bsy->busy_start + bsy->busy_length - 1;
-                        if ((bno > bend) || (uend < bsy->busy_start)) {
-                                cnt--;
-                        } else {
-                                break;
-                        }
-                }
-        }
-        trace_xfs_alloc_busysearch(mp, agno, bno, len, !!cnt);
+                /* (start1,length1) within (start2, length2) */
+                if (XFS_LSN_CMP(bsy->busy_tp->t_commit_lsn, lsn) > 0)
+                        lsn = bsy->busy_tp->t_commit_lsn;
+        }
+        spin_unlock(&mp->m_perag[agno].pagb_lock);
+        trace_xfs_alloc_busysearch(tp->t_mountp, agno, bno, len, lsn);
        /*
         * If a block was found, force the log through the LSN of the
         * transaction that freed the block
         */
-        if (cnt) {
+        if (lsn)
-                lsn = bsy->busy_tp->t_commit_lsn;
-                spin_unlock(&mp->m_perag[agno].pagb_lock);
                xfs_log_force(mp, lsn, XFS_LOG_FORCE|XFS_LOG_SYNC);
-        } else {
-                spin_unlock(&mp->m_perag[agno].pagb_lock);
-        }
 }
diff --git a/fs/xfs/xfs_dfrag.c b/fs/xfs/xfs_dfrag.c
index d1483a4f71b8..84ca1cf16a1e 100644
--- a/fs/xfs/xfs_dfrag.c
+++ b/fs/xfs/xfs_dfrag.c
@@ -114,10 +114,82 @@ xfs_swapext(
        return error;
 }
+/*
+ * We need to check that the format of the data fork in the temporary inode is
+ * valid for the target inode before doing the swap. This is not a problem with
+ * attr1 because of the fixed fork offset, but attr2 has a dynamically sized
+ * data fork depending on the space the attribute fork is taking so we can get
+ * invalid formats on the target inode.
+ *
+ * E.g. target has space for 7 extents in extent format, temp inode only has
+ * space for 6.  If we defragment down to 7 extents, then the tmp format is a
+ * btree, but when swapped it needs to be in extent format. Hence we can't just
+ * blindly swap data forks on attr2 filesystems.
+ *
+ * Note that we check the swap in both directions so that we don't end up with
+ * a corrupt temporary inode, either.
+ *
+ * Note that fixing the way xfs_fsr sets up the attribute fork in the source
+ * inode will prevent this situation from occurring, so all we do here is
+ * reject and log the attempt. basically we are putting the responsibility on
+ * userspace to get this right.
+ */
+static int
+xfs_swap_extents_check_format(
+        xfs_inode_t     *ip,    /* target inode */
+        xfs_inode_t     *tip)   /* tmp inode */
+{
+        /* Should never get a local format */
+        if (ip->i_d.di_format == XFS_DINODE_FMT_LOCAL ||
+            tip->i_d.di_format == XFS_DINODE_FMT_LOCAL)
+                return EINVAL;
+        /*
+         * if the target inode has less extents that then temporary inode then
+         * why did userspace call us?
+         */
+        if (ip->i_d.di_nextents < tip->i_d.di_nextents)
+                return EINVAL;
+        /*
+         * if the target inode is in extent form and the temp inode is in btree
+         * form then we will end up with the target inode in the wrong format
+         * as we already know there are less extents in the temp inode.
+         */
+        if (ip->i_d.di_format == XFS_DINODE_FMT_EXTENTS &&
+            tip->i_d.di_format == XFS_DINODE_FMT_BTREE)
+                return EINVAL;
+        /* Check temp in extent form to max in target */
+        if (tip->i_d.di_format == XFS_DINODE_FMT_EXTENTS &&
+            XFS_IFORK_NEXTENTS(tip, XFS_DATA_FORK) > ip->i_df.if_ext_max)
+                return EINVAL;
+        /* Check target in extent form to max in temp */
+        if (ip->i_d.di_format == XFS_DINODE_FMT_EXTENTS &&
+            XFS_IFORK_NEXTENTS(ip, XFS_DATA_FORK) > tip->i_df.if_ext_max)
+                return EINVAL;
+        /* Check root block of temp in btree form to max in target */
+        if (tip->i_d.di_format == XFS_DINODE_FMT_BTREE &&
+            XFS_IFORK_BOFF(ip) &&
+            tip->i_df.if_broot_bytes > XFS_IFORK_BOFF(ip))
+                return EINVAL;
+        /* Check root block of target in btree form to max in temp */
+        if (ip->i_d.di_format == XFS_DINODE_FMT_BTREE &&
+            XFS_IFORK_BOFF(tip) &&
+            ip->i_df.if_broot_bytes > XFS_IFORK_BOFF(tip))
+                return EINVAL;
+        return 0;
+}
 int
 xfs_swap_extents(
-        xfs_inode_t     *ip,
+        xfs_inode_t     *ip,    /* target inode */
-        xfs_inode_t     *tip,
+        xfs_inode_t     *tip,   /* tmp inode */
        xfs_swapext_t   *sxp)
 {
        xfs_mount_t     *mp;
@@ -161,13 +233,6 @@ xfs_swap_extents(
                goto out_unlock;
        }
-        /* Should never get a local format */
-        if (ip->i_d.di_format == XFS_DINODE_FMT_LOCAL ||
-            tip->i_d.di_format == XFS_DINODE_FMT_LOCAL) {
-                error = XFS_ERROR(EINVAL);
-                goto out_unlock;
-        }
        if (VN_CACHED(VFS_I(tip)) != 0) {
                error = xfs_flushinval_pages(tip, 0, -1,
                                FI_REMAPF_LOCKED);
@@ -189,13 +254,12 @@ xfs_swap_extents(
                goto out_unlock;
        }
-        /*
+        /* check inode formats now that data is flushed */
-         * If the target has extended attributes, the tmp file
+        error = xfs_swap_extents_check_format(ip, tip);
-         * must also in order to ensure the correct data fork
+        if (error) {
-         * format.
+                xfs_fs_cmn_err(CE_NOTE, mp,
-         */
+                    "%s: inode 0x%llx format is incompatible for exchanging.",
-        if ( XFS_IFORK_Q(ip) != XFS_IFORK_Q(tip) ) {
+                                __FILE__, ip->i_ino);
-                error = XFS_ERROR(EINVAL);
                goto out_unlock;
        }
@@ -276,6 +340,16 @@ xfs_swap_extents(
        *tifp = *tempifp;       /* struct copy */
        /*
+         * Fix the in-memory data fork values that are dependent on the fork
+         * offset in the inode. We can't assume they remain the same as attr2
+         * has dynamic fork offsets.
+         */
+        ifp->if_ext_max = XFS_IFORK_SIZE(ip, XFS_DATA_FORK) /
+                                        (uint)sizeof(xfs_bmbt_rec_t);
+        tifp->if_ext_max = XFS_IFORK_SIZE(tip, XFS_DATA_FORK) /
+                                        (uint)sizeof(xfs_bmbt_rec_t);
+        /*
         * Fix the on-disk inode values
         */
        tmp = (__uint64_t)ip->i_d.di_nblocks;
diff --git a/fs/xfs/xfs_iget.c b/fs/xfs/xfs_iget.c
index fa402a6bbbcf..155e798f30a1 100644
--- a/fs/xfs/xfs_iget.c
+++ b/fs/xfs/xfs_iget.c
@@ -73,7 +73,6 @@ xfs_inode_alloc(
        ASSERT(atomic_read(&ip->i_pincount) == 0);
        ASSERT(!spin_is_locked(&ip->i_flags_lock));
        ASSERT(completion_done(&ip->i_flush));
-        ASSERT(!rwsem_is_locked(&ip->i_iolock.mr_lock));
        mrlock_init(&ip->i_iolock, MRLOCK_BARRIER, "xfsio", ip->i_ino);
diff --git a/fs/xfs/xfs_inode.c b/fs/xfs/xfs_inode.c
index ce278b3ae7fc..ef77fd88c8e3 100644
--- a/fs/xfs/xfs_inode.c
+++ b/fs/xfs/xfs_inode.c
@@ -2841,8 +2841,8 @@ xfs_iflush(
        mp = ip->i_mount;
        /*
-         * If the inode isn't dirty, then just release the inode
+         * If the inode isn't dirty, then just release the inode flush lock and
-         * flush lock and do nothing.
+         * do nothing.
         */
        if (xfs_inode_clean(ip)) {
                xfs_ifunlock(ip);
@@ -2868,6 +2868,19 @@ xfs_iflush(
        xfs_iunpin_wait(ip);
        /*
+         * For stale inodes we cannot rely on the backing buffer remaining
+         * stale in cache for the remaining life of the stale inode and so
+         * xfs_itobp() below may give us a buffer that no longer contains
+         * inodes below. We have to check this after ensuring the inode is
+         * unpinned so that it is safe to reclaim the stale inode after the
+         * flush call.
+         */
+        if (xfs_iflags_test(ip, XFS_ISTALE)) {
+                xfs_ifunlock(ip);
+                return 0;
+        }
+        /*
         * This may have been unpinned because the filesystem is shutting
         * down forcibly. If that's the case we must not write this inode
         * to disk, because the log record didn't make it to disk!
diff --git a/fs/xfs/xfs_rtalloc.c b/fs/xfs/xfs_rtalloc.c
index 9e15a1185362..6be05f756d59 100644
--- a/fs/xfs/xfs_rtalloc.c
+++ b/fs/xfs/xfs_rtalloc.c
@@ -1517,6 +1517,8 @@ xfs_rtfree_range(
         */
        error = xfs_rtfind_forw(mp, tp, end, mp->m_sb.sb_rextents - 1,
                &postblock);
+        if (error)
+                return error;
        /*
         * If there are blocks not being freed at the front of the
         * old extent, add summary data for them to be allocated.
diff --git a/fs/xfs/xfs_vnodeops.c b/fs/xfs/xfs_vnodeops.c
index 6558ffd8d140..6f268756bf36 100644
--- a/fs/xfs/xfs_vnodeops.c
+++ b/fs/xfs/xfs_vnodeops.c
@@ -70,7 +70,6 @@ xfs_setattr(
        uint                    commit_flags=0;
        uid_t                   uid=0, iuid=0;
        gid_t                   gid=0, igid=0;
-        int                     timeflags = 0;
        struct xfs_dquot        *udqp, *gdqp, *olddquot1, *olddquot2;
        int                     need_iolock = 1;
@@ -135,16 +134,13 @@ xfs_setattr(
        if (flags & XFS_ATTR_NOLOCK)
                need_iolock = 0;
        if (!(mask & ATTR_SIZE)) {
-                if ((mask != (ATTR_CTIME|ATTR_ATIME|ATTR_MTIME)) ||
+                tp = xfs_trans_alloc(mp, XFS_TRANS_SETATTR_NOT_SIZE);
-                    (mp->m_flags & XFS_MOUNT_WSYNC)) {
+                commit_flags = 0;
-                        tp = xfs_trans_alloc(mp, XFS_TRANS_SETATTR_NOT_SIZE);
+                code = xfs_trans_reserve(tp, 0, XFS_ICHANGE_LOG_RES(mp),
-                        commit_flags = 0;
+                                         0, 0, 0);
-                        if ((code = xfs_trans_reserve(tp, 0,
+                if (code) {
-                                                     XFS_ICHANGE_LOG_RES(mp), 0,
+                        lock_flags = 0;
-                                                     0, 0))) {
+                        goto error_return;
-                                lock_flags = 0;
-                                goto error_return;
-                        }
                }
        } else {
                if (DM_EVENT_ENABLED(ip, DM_EVENT_TRUNCATE) &&
@@ -295,15 +291,23 @@ xfs_setattr(
                 * or we are explicitly asked to change it. This handles
                 * the semantic difference between truncate() and ftruncate()
                 * as implemented in the VFS.
+                 *
+                 * The regular truncate() case without ATTR_CTIME and ATTR_MTIME
+                 * is a special case where we need to update the times despite
+                 * not having these flags set.  For all other operations the
+                 * VFS set these flags explicitly if it wants a timestamp
+                 * update.
                 */
-                if (iattr->ia_size != ip->i_size || (mask & ATTR_CTIME))
+                if (iattr->ia_size != ip->i_size &&
-                        timeflags |= XFS_ICHGTIME_MOD | XFS_ICHGTIME_CHG;
+                    (!(mask & (ATTR_CTIME | ATTR_MTIME)))) {
+                        iattr->ia_ctime = iattr->ia_mtime =
+                                current_fs_time(inode->i_sb);
+                        mask |= ATTR_CTIME | ATTR_MTIME;
+                }
                if (iattr->ia_size > ip->i_size) {
                        ip->i_d.di_size = iattr->ia_size;
                        ip->i_size = iattr->ia_size;
-                        if (!(flags & XFS_ATTR_DMI))
-                                xfs_ichgtime(ip, XFS_ICHGTIME_CHG);
                        xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE);
                } else if (iattr->ia_size <= ip->i_size ||
                           (iattr->ia_size == 0 && ip->i_d.di_nextents)) {
@@ -374,9 +378,6 @@ xfs_setattr(
                        ip->i_d.di_gid = gid;
                        inode->i_gid = gid;
                }
-                xfs_trans_log_inode (tp, ip, XFS_ILOG_CORE);
-                timeflags |= XFS_ICHGTIME_CHG;
        }
        /*
@@ -393,51 +394,37 @@ xfs_setattr(
                inode->i_mode &= S_IFMT;
                inode->i_mode |= mode & ~S_IFMT;
-                xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE);
-                timeflags |= XFS_ICHGTIME_CHG;
        }
        /*
         * Change file access or modified times.
         */
-        if (mask & (ATTR_ATIME|ATTR_MTIME)) {
+        if (mask & ATTR_ATIME) {
-                if (mask & ATTR_ATIME) {
+                inode->i_atime = iattr->ia_atime;
-                        inode->i_atime = iattr->ia_atime;
+                ip->i_d.di_atime.t_sec = iattr->ia_atime.tv_sec;
-                        ip->i_d.di_atime.t_sec = iattr->ia_atime.tv_sec;
+                ip->i_d.di_atime.t_nsec = iattr->ia_atime.tv_nsec;
-                        ip->i_d.di_atime.t_nsec = iattr->ia_atime.tv_nsec;
+                ip->i_update_core = 1;
-                        ip->i_update_core = 1;
-                }
-                if (mask & ATTR_MTIME) {
-                        inode->i_mtime = iattr->ia_mtime;
-                        ip->i_d.di_mtime.t_sec = iattr->ia_mtime.tv_sec;
-                        ip->i_d.di_mtime.t_nsec = iattr->ia_mtime.tv_nsec;
-                        timeflags &= ~XFS_ICHGTIME_MOD;
-                        timeflags |= XFS_ICHGTIME_CHG;
-                }
-                if (tp && (mask & (ATTR_MTIME_SET|ATTR_ATIME_SET)))
-                        xfs_trans_log_inode (tp, ip, XFS_ILOG_CORE);
        }
+        if (mask & ATTR_CTIME) {
-        /*
-         * Change file inode change time only if ATTR_CTIME set
-         * AND we have been called by a DMI function.
-         */
-        if ((flags & XFS_ATTR_DMI) && (mask & ATTR_CTIME)) {
                inode->i_ctime = iattr->ia_ctime;
                ip->i_d.di_ctime.t_sec = iattr->ia_ctime.tv_sec;
                ip->i_d.di_ctime.t_nsec = iattr->ia_ctime.tv_nsec;
                ip->i_update_core = 1;
-                timeflags &= ~XFS_ICHGTIME_CHG;
+        }
+        if (mask & ATTR_MTIME) {
+                inode->i_mtime = iattr->ia_mtime;
+                ip->i_d.di_mtime.t_sec = iattr->ia_mtime.tv_sec;
+                ip->i_d.di_mtime.t_nsec = iattr->ia_mtime.tv_nsec;
+                ip->i_update_core = 1;
        }
        /*
-         * Send out timestamp changes that need to be set to the
+         * And finally, log the inode core if any attribute in it
-         * current time.  Not done when called by a DMI function.
+         * has been changed.
         */
-        if (timeflags && !(flags & XFS_ATTR_DMI))
+        if (mask & (ATTR_UID|ATTR_GID|ATTR_MODE|
-                xfs_ichgtime(ip, timeflags);
+                    ATTR_ATIME|ATTR_CTIME|ATTR_MTIME))
+                xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE);
        XFS_STATS_INC(xs_ig_attrchg);
@@ -452,12 +439,10 @@ xfs_setattr(
         * mix so this probably isn't worth the trouble to optimize.
         */
        code = 0;
-        if (tp) {
+        if (mp->m_flags & XFS_MOUNT_WSYNC)
-                if (mp->m_flags & XFS_MOUNT_WSYNC)
+                xfs_trans_set_sync(tp);
-                        xfs_trans_set_sync(tp);
-                code = xfs_trans_commit(tp, commit_flags);
+        code = xfs_trans_commit(tp, commit_flags);
-        }
        xfs_iunlock(ip, lock_flags);
author	Jens Axboe <jens.axboe@oracle.com>	2010-02-22 07:48:51 -0500
committer	Jens Axboe <jens.axboe@oracle.com>	2010-02-22 07:48:51 -0500
commit	f11cbd74c5ff3614f6390b4de67a6ffdc614c378 (patch)
tree	6a30920ade9eeaac5bf6d6263b5d09712e882eb0 /fs
parent	429c42c9d246f5bda868495c09974312a0177328 (diff)
parent	aea187c46f7d03ce985e55eb1398d0776a15b928 (diff)