Merge branch 'linus' into cpus4096

author: Ingo Molnar <mingo@elte.hu> 2008-07-28 15:14:43 -0400
committer: Ingo Molnar <mingo@elte.hu> 2008-07-28 15:14:43 -0400
commit: 414f746d232d41ed6ae8632c4495ae795373c44b (patch)
tree: 167f9bc8f139c6e82e6732b38c7a938b8a9d31cd /fs
parent: 5a7a201c51c324876d00a54e7208af6af12d1ca4 (diff)
parent: c9272c4f9fbe2087beb3392f526dc5b19efaa56b (diff)
152 files changed, 3147 insertions, 1791 deletions
diff --git a/fs/Kconfig b/fs/Kconfig
index 97e3bdedb1e6..d3873583360b 100644
--- a/fs/Kconfig
+++ b/fs/Kconfig
@@ -1383,6 +1383,19 @@ config MINIX_FS
          partition (the one containing the directory /) cannot be compiled as
          a module.
+config OMFS_FS
+        tristate "SonicBlue Optimized MPEG File System support"
+        depends on BLOCK
+        select CRC_ITU_T
+        help
+          This is the proprietary file system used by the Rio Karma music
+          player and ReplayTV DVR.  Despite the name, this filesystem is not
+          more efficient than a standard FS for MPEG files, in fact likely
+          the opposite is true.  Say Y if you have either of these devices
+          and wish to mount its disk.
+          To compile this file system support as a module, choose M here: the
+          module will be called omfs.  If unsure, say N.
 config HPFS_FS
        tristate "OS/2 HPFS file system support"
diff --git a/fs/Makefile b/fs/Makefile
index 3b2178b4bb66..a1482a5eff15 100644
--- a/fs/Makefile
+++ b/fs/Makefile
@@ -111,6 +111,7 @@ obj-$(CONFIG_ADFS_FS)		+= adfs/
 obj-$(CONFIG_FUSE_FS)           += fuse/
 obj-$(CONFIG_UDF_FS)            += udf/
 obj-$(CONFIG_SUN_OPENPROMFS)    += openpromfs/
+obj-$(CONFIG_OMFS_FS)           += omfs/
 obj-$(CONFIG_JFS_FS)            += jfs/
 obj-$(CONFIG_XFS_FS)            += xfs/
 obj-$(CONFIG_9P_FS)             += 9p/
diff --git a/fs/adfs/super.c b/fs/adfs/super.c
index 9e421eeb672b..26f3b43726bb 100644
--- a/fs/adfs/super.c
+++ b/fs/adfs/super.c
@@ -249,7 +249,7 @@ static void adfs_destroy_inode(struct inode *inode)
        kmem_cache_free(adfs_inode_cachep, ADFS_I(inode));
 }
-static void init_once(struct kmem_cache *cachep, void *foo)
+static void init_once(void *foo)
 {
        struct adfs_inode_info *ei = (struct adfs_inode_info *) foo;
diff --git a/fs/affs/affs.h b/fs/affs/affs.h
index 223b1917093e..e9ec915f7553 100644
--- a/fs/affs/affs.h
+++ b/fs/affs/affs.h
@@ -2,6 +2,7 @@
 #include <linux/fs.h>
 #include <linux/buffer_head.h>
 #include <linux/amigaffs.h>
+#include <linux/mutex.h>
 /* AmigaOS allows file names with up to 30 characters length.
 * Names longer than that will be silently truncated. If you
@@ -98,7 +99,7 @@ struct affs_sb_info {
        gid_t s_gid;                    /* gid to override */
        umode_t s_mode;                 /* mode to override */
        struct buffer_head *s_root_bh;  /* Cached root block. */
-        struct semaphore s_bmlock;      /* Protects bitmap access. */
+        struct mutex s_bmlock;          /* Protects bitmap access. */
        struct affs_bm_info *s_bitmap;  /* Bitmap infos. */
        u32 s_bmap_count;               /* # of bitmap blocks. */
        u32 s_bmap_bits;                /* # of bits in one bitmap blocks */
diff --git a/fs/affs/bitmap.c b/fs/affs/bitmap.c
index c4a5ad09ddf2..dc5ef14bdc1c 100644
--- a/fs/affs/bitmap.c
+++ b/fs/affs/bitmap.c
@@ -45,14 +45,14 @@ affs_count_free_blocks(struct super_block *sb)
        if (sb->s_flags & MS_RDONLY)
                return 0;
-        down(&AFFS_SB(sb)->s_bmlock);
+        mutex_lock(&AFFS_SB(sb)->s_bmlock);
        bm = AFFS_SB(sb)->s_bitmap;
        free = 0;
        for (i = AFFS_SB(sb)->s_bmap_count; i > 0; bm++, i--)
                free += bm->bm_free;
-        up(&AFFS_SB(sb)->s_bmlock);
+        mutex_unlock(&AFFS_SB(sb)->s_bmlock);
        return free;
 }
@@ -76,7 +76,7 @@ affs_free_block(struct super_block *sb, u32 block)
        bit     = blk % sbi->s_bmap_bits;
        bm      = &sbi->s_bitmap[bmap];
-        down(&sbi->s_bmlock);
+        mutex_lock(&sbi->s_bmlock);
        bh = sbi->s_bmap_bh;
        if (sbi->s_last_bmap != bmap) {
@@ -105,19 +105,19 @@ affs_free_block(struct super_block *sb, u32 block)
        sb->s_dirt = 1;
        bm->bm_free++;
-        up(&sbi->s_bmlock);
+        mutex_unlock(&sbi->s_bmlock);
        return;
 err_free:
        affs_warning(sb,"affs_free_block","Trying to free block %u which is already free", block);
-        up(&sbi->s_bmlock);
+        mutex_unlock(&sbi->s_bmlock);
        return;
 err_bh_read:
        affs_error(sb,"affs_free_block","Cannot read bitmap block %u", bm->bm_key);
        sbi->s_bmap_bh = NULL;
        sbi->s_last_bmap = ~0;
-        up(&sbi->s_bmlock);
+        mutex_unlock(&sbi->s_bmlock);
        return;
 err_range:
@@ -168,7 +168,7 @@ affs_alloc_block(struct inode *inode, u32 goal)
        bmap = blk / sbi->s_bmap_bits;
        bm = &sbi->s_bitmap[bmap];
-        down(&sbi->s_bmlock);
+        mutex_lock(&sbi->s_bmlock);
        if (bm->bm_free)
                goto find_bmap_bit;
@@ -249,7 +249,7 @@ find_bit:
        mark_buffer_dirty(bh);
        sb->s_dirt = 1;
-        up(&sbi->s_bmlock);
+        mutex_unlock(&sbi->s_bmlock);
        pr_debug("%d\n", blk);
        return blk;
@@ -259,7 +259,7 @@ err_bh_read:
        sbi->s_bmap_bh = NULL;
        sbi->s_last_bmap = ~0;
 err_full:
-        up(&sbi->s_bmlock);
+        mutex_unlock(&sbi->s_bmlock);
        pr_debug("failed\n");
        return 0;
 }
diff --git a/fs/affs/file.c b/fs/affs/file.c
index 6eac7bdeec94..1377b1240b6e 100644
--- a/fs/affs/file.c
+++ b/fs/affs/file.c
@@ -46,8 +46,6 @@ const struct inode_operations affs_file_inode_operations = {
 static int
 affs_file_open(struct inode *inode, struct file *filp)
 {
-        if (atomic_read(&filp->f_count) != 1)
-                return 0;
        pr_debug("AFFS: open(%lu,%d)\n",
                 inode->i_ino, atomic_read(&AFFS_I(inode)->i_opencnt));
        atomic_inc(&AFFS_I(inode)->i_opencnt);
@@ -57,8 +55,6 @@ affs_file_open(struct inode *inode, struct file *filp)
 static int
 affs_file_release(struct inode *inode, struct file *filp)
 {
-        if (atomic_read(&filp->f_count) != 0)
-                return 0;
        pr_debug("AFFS: release(%lu, %d)\n",
                 inode->i_ino, atomic_read(&AFFS_I(inode)->i_opencnt));
diff --git a/fs/affs/super.c b/fs/affs/super.c
index d214837d5e42..3a89094f93d0 100644
--- a/fs/affs/super.c
+++ b/fs/affs/super.c
@@ -90,7 +90,7 @@ static void affs_destroy_inode(struct inode *inode)
        kmem_cache_free(affs_inode_cachep, AFFS_I(inode));
 }
-static void init_once(struct kmem_cache *cachep, void *foo)
+static void init_once(void *foo)
 {
        struct affs_inode_info *ei = (struct affs_inode_info *) foo;
@@ -290,7 +290,7 @@ static int affs_fill_super(struct super_block *sb, void *data, int silent)
        if (!sbi)
                return -ENOMEM;
        sb->s_fs_info = sbi;
-        init_MUTEX(&sbi->s_bmlock);
+        mutex_init(&sbi->s_bmlock);
        if (!parse_options(data,&uid,&gid,&i,&reserved,&root_block,
                                &blocksize,&sbi->s_prefix,
diff --git a/fs/afs/internal.h b/fs/afs/internal.h
index 7102824ba847..3cb6920ff30b 100644
--- a/fs/afs/internal.h
+++ b/fs/afs/internal.h
@@ -469,8 +469,6 @@ extern bool afs_cm_incoming_call(struct afs_call *);
 extern const struct inode_operations afs_dir_inode_operations;
 extern const struct file_operations afs_dir_file_operations;
-extern int afs_permission(struct inode *, int, struct nameidata *);
 /*
 * file.c
 */
@@ -605,7 +603,7 @@ extern void afs_clear_permits(struct afs_vnode *);
 extern void afs_cache_permit(struct afs_vnode *, struct key *, long);
 extern void afs_zap_permits(struct rcu_head *);
 extern struct key *afs_request_key(struct afs_cell *);
-extern int afs_permission(struct inode *, int, struct nameidata *);
+extern int afs_permission(struct inode *, int);
 /*
 * server.c
diff --git a/fs/afs/security.c b/fs/afs/security.c
index 3bcbeceba1bb..3ef504370034 100644
--- a/fs/afs/security.c
+++ b/fs/afs/security.c
@@ -284,7 +284,7 @@ static int afs_check_permit(struct afs_vnode *vnode, struct key *key,
 * - AFS ACLs are attached to directories only, and a file is controlled by its
 *   parent directory's ACL
 */
-int afs_permission(struct inode *inode, int mask, struct nameidata *nd)
+int afs_permission(struct inode *inode, int mask)
 {
        struct afs_vnode *vnode = AFS_FS_I(inode);
        afs_access_t uninitialized_var(access);
diff --git a/fs/afs/super.c b/fs/afs/super.c
index 7e3faeef6818..250d8c4d66e4 100644
--- a/fs/afs/super.c
+++ b/fs/afs/super.c
@@ -27,7 +27,7 @@
 #define AFS_FS_MAGIC 0x6B414653 /* 'kAFS' */
-static void afs_i_init_once(struct kmem_cache *cachep, void *foo);
+static void afs_i_init_once(void *foo);
 static int afs_get_sb(struct file_system_type *fs_type,
                      int flags, const char *dev_name,
                      void *data, struct vfsmount *mnt);
@@ -449,7 +449,7 @@ static void afs_put_super(struct super_block *sb)
 /*
 * initialise an inode cache slab element prior to any use
 */
-static void afs_i_init_once(struct kmem_cache *cachep, void *_vnode)
+static void afs_i_init_once(void *_vnode)
 {
        struct afs_vnode *vnode = _vnode;
diff --git a/fs/aio.c b/fs/aio.c
index 0051fd94b44e..f658441d5666 100644
--- a/fs/aio.c
+++ b/fs/aio.c
@@ -512,8 +512,8 @@ static void aio_fput_routine(struct work_struct *data)
 */
 static int __aio_put_req(struct kioctx *ctx, struct kiocb *req)
 {
-        dprintk(KERN_DEBUG "aio_put(%p): f_count=%d\n",
+        dprintk(KERN_DEBUG "aio_put(%p): f_count=%ld\n",
-                req, atomic_read(&req->ki_filp->f_count));
+                req, atomic_long_read(&req->ki_filp->f_count));
        assert_spin_locked(&ctx->ctx_lock);
@@ -528,7 +528,7 @@ static int __aio_put_req(struct kioctx *ctx, struct kiocb *req)
        /* Must be done under the lock to serialise against cancellation.
         * Call this aio_fput as it duplicates fput via the fput_work.
         */
-        if (unlikely(atomic_dec_and_test(&req->ki_filp->f_count))) {
+        if (unlikely(atomic_long_dec_and_test(&req->ki_filp->f_count))) {
                get_ioctx(ctx);
                spin_lock(&fput_lock);
                list_add(&req->ki_list, &fput_head);
diff --git a/fs/attr.c b/fs/attr.c
index 966b73e25f82..26c71ba1eed4 100644
--- a/fs/attr.c
+++ b/fs/attr.c
@@ -51,7 +51,7 @@ int inode_change_ok(struct inode *inode, struct iattr *attr)
        }
        /* Check for setting the inode time. */
-        if (ia_valid & (ATTR_MTIME_SET | ATTR_ATIME_SET)) {
+        if (ia_valid & (ATTR_MTIME_SET | ATTR_ATIME_SET | ATTR_TIMES_SET)) {
                if (!is_owner_or_cap(inode))
                        goto error;
        }
@@ -108,6 +108,11 @@ int notify_change(struct dentry * dentry, struct iattr * attr)
        struct timespec now;
        unsigned int ia_valid = attr->ia_valid;
+        if (ia_valid & (ATTR_MODE | ATTR_UID | ATTR_GID | ATTR_TIMES_SET)) {
+                if (IS_IMMUTABLE(inode) || IS_APPEND(inode))
+                        return -EPERM;
+        }
        now = current_fs_time(inode->i_sb);
        attr->ia_ctime = now;
diff --git a/fs/bad_inode.c b/fs/bad_inode.c
index f1c2ea8342f5..5f1538c03b1b 100644
--- a/fs/bad_inode.c
+++ b/fs/bad_inode.c
@@ -243,8 +243,7 @@ static int bad_inode_readlink(struct dentry *dentry, char __user *buffer,
        return -EIO;
 }
-static int bad_inode_permission(struct inode *inode, int mask,
+static int bad_inode_permission(struct inode *inode, int mask)
-                        struct nameidata *nd)
 {
        return -EIO;
 }
diff --git a/fs/befs/linuxvfs.c b/fs/befs/linuxvfs.c
index e8717de3bab3..02c6e62b72f8 100644
--- a/fs/befs/linuxvfs.c
+++ b/fs/befs/linuxvfs.c
@@ -289,7 +289,7 @@ befs_destroy_inode(struct inode *inode)
        kmem_cache_free(befs_inode_cachep, BEFS_I(inode));
 }
-static void init_once(struct kmem_cache *cachep, void *foo)
+static void init_once(void *foo)
 {
        struct befs_inode_info *bi = (struct befs_inode_info *) foo;
diff --git a/fs/bfs/bfs.h b/fs/bfs/bfs.h
index 70f5d3a8eede..7109e451abf7 100644
--- a/fs/bfs/bfs.h
+++ b/fs/bfs/bfs.h
@@ -16,8 +16,9 @@ struct bfs_sb_info {
        unsigned long si_freei;
        unsigned long si_lf_eblk;
        unsigned long si_lasti;
-        unsigned long * si_imap;
+        unsigned long *si_imap;
-        struct buffer_head * si_sbh;            /* buffer header w/superblock */
+        struct buffer_head *si_sbh;             /* buffer header w/superblock */
+        struct mutex bfs_lock;
 };
 /*
diff --git a/fs/bfs/dir.c b/fs/bfs/dir.c
index 034950cb3cbe..87ee5ccee348 100644
--- a/fs/bfs/dir.c
+++ b/fs/bfs/dir.c
@@ -32,16 +32,17 @@ static int bfs_readdir(struct file *f, void *dirent, filldir_t filldir)
        struct inode *dir = f->f_path.dentry->d_inode;
        struct buffer_head *bh;
        struct bfs_dirent *de;
+        struct bfs_sb_info *info = BFS_SB(dir->i_sb);
        unsigned int offset;
        int block;
-        lock_kernel();
+        mutex_lock(&info->bfs_lock);
        if (f->f_pos & (BFS_DIRENT_SIZE - 1)) {
                printf("Bad f_pos=%08lx for %s:%08lx\n",
                                        (unsigned long)f->f_pos,
                                        dir->i_sb->s_id, dir->i_ino);
-                unlock_kernel();
+                mutex_unlock(&info->bfs_lock);
                return -EBADF;
        }
@@ -61,7 +62,7 @@ static int bfs_readdir(struct file *f, void *dirent, filldir_t filldir)
                                                le16_to_cpu(de->ino),
                                                DT_UNKNOWN) < 0) {
                                        brelse(bh);
-                                        unlock_kernel();
+                                        mutex_unlock(&info->bfs_lock);
                                        return 0;
                                }
                        }
@@ -71,7 +72,7 @@ static int bfs_readdir(struct file *f, void *dirent, filldir_t filldir)
                brelse(bh);
        }
-        unlock_kernel();
+        mutex_unlock(&info->bfs_lock);
        return 0;       
 }
@@ -95,10 +96,10 @@ static int bfs_create(struct inode *dir, struct dentry *dentry, int mode,
        inode = new_inode(s);
        if (!inode)
                return -ENOSPC;
-        lock_kernel();
+        mutex_lock(&info->bfs_lock);
        ino = find_first_zero_bit(info->si_imap, info->si_lasti);
        if (ino > info->si_lasti) {
-                unlock_kernel();
+                mutex_unlock(&info->bfs_lock);
                iput(inode);
                return -ENOSPC;
        }
@@ -125,10 +126,10 @@ static int bfs_create(struct inode *dir, struct dentry *dentry, int mode,
        if (err) {
                inode_dec_link_count(inode);
                iput(inode);
-                unlock_kernel();
+                mutex_unlock(&info->bfs_lock);
                return err;
        }
-        unlock_kernel();
+        mutex_unlock(&info->bfs_lock);
        d_instantiate(dentry, inode);
        return 0;
 }
@@ -139,22 +140,23 @@ static struct dentry *bfs_lookup(struct inode *dir, struct dentry *dentry,
        struct inode *inode = NULL;
        struct buffer_head *bh;
        struct bfs_dirent *de;
+        struct bfs_sb_info *info = BFS_SB(dir->i_sb);
        if (dentry->d_name.len > BFS_NAMELEN)
                return ERR_PTR(-ENAMETOOLONG);
-        lock_kernel();
+        mutex_lock(&info->bfs_lock);
        bh = bfs_find_entry(dir, dentry->d_name.name, dentry->d_name.len, &de);
        if (bh) {
                unsigned long ino = (unsigned long)le16_to_cpu(de->ino);
                brelse(bh);
                inode = bfs_iget(dir->i_sb, ino);
                if (IS_ERR(inode)) {
-                        unlock_kernel();
+                        mutex_unlock(&info->bfs_lock);
                        return ERR_CAST(inode);
                }
        }
-        unlock_kernel();
+        mutex_unlock(&info->bfs_lock);
        d_add(dentry, inode);
        return NULL;
 }
@@ -163,13 +165,14 @@ static int bfs_link(struct dentry *old, struct inode *dir,
                                                struct dentry *new)
 {
        struct inode *inode = old->d_inode;
+        struct bfs_sb_info *info = BFS_SB(inode->i_sb);
        int err;
-        lock_kernel();
+        mutex_lock(&info->bfs_lock);
        err = bfs_add_entry(dir, new->d_name.name, new->d_name.len,
                                                        inode->i_ino);
        if (err) {
-                unlock_kernel();
+                mutex_unlock(&info->bfs_lock);
                return err;
        }
        inc_nlink(inode);
@@ -177,19 +180,19 @@ static int bfs_link(struct dentry *old, struct inode *dir,
        mark_inode_dirty(inode);
        atomic_inc(&inode->i_count);
        d_instantiate(new, inode);
-        unlock_kernel();
+        mutex_unlock(&info->bfs_lock);
        return 0;
 }
 static int bfs_unlink(struct inode *dir, struct dentry *dentry)
 {
        int error = -ENOENT;
-        struct inode *inode;
+        struct inode *inode = dentry->d_inode;
        struct buffer_head *bh;
        struct bfs_dirent *de;
+        struct bfs_sb_info *info = BFS_SB(inode->i_sb);
-        inode = dentry->d_inode;
+        mutex_lock(&info->bfs_lock);
-        lock_kernel();
        bh = bfs_find_entry(dir, dentry->d_name.name, dentry->d_name.len, &de);
        if (!bh || (le16_to_cpu(de->ino) != inode->i_ino))
                goto out_brelse;
@@ -210,7 +213,7 @@ static int bfs_unlink(struct inode *dir, struct dentry *dentry)
 out_brelse:
        brelse(bh);
-        unlock_kernel();
+        mutex_unlock(&info->bfs_lock);
        return error;
 }
@@ -220,6 +223,7 @@ static int bfs_rename(struct inode *old_dir, struct dentry *old_dentry,
        struct inode *old_inode, *new_inode;
        struct buffer_head *old_bh, *new_bh;
        struct bfs_dirent *old_de, *new_de;
+        struct bfs_sb_info *info;
        int error = -ENOENT;
        old_bh = new_bh = NULL;
@@ -227,7 +231,9 @@ static int bfs_rename(struct inode *old_dir, struct dentry *old_dentry,
        if (S_ISDIR(old_inode->i_mode))
                return -EINVAL;
-        lock_kernel();
+        info = BFS_SB(old_inode->i_sb);
+        mutex_lock(&info->bfs_lock);
        old_bh = bfs_find_entry(old_dir, 
                                old_dentry->d_name.name, 
                                old_dentry->d_name.len, &old_de);
@@ -264,7 +270,7 @@ static int bfs_rename(struct inode *old_dir, struct dentry *old_dentry,
        error = 0;
 end_rename:
-        unlock_kernel();
+        mutex_unlock(&info->bfs_lock);
        brelse(old_bh);
        brelse(new_bh);
        return error;
diff --git a/fs/bfs/file.c b/fs/bfs/file.c
index b11e63e8fbcd..6a021265f018 100644
--- a/fs/bfs/file.c
+++ b/fs/bfs/file.c
@@ -99,7 +99,7 @@ static int bfs_get_block(struct inode *inode, sector_t block,
                return -ENOSPC;
        /* The rest has to be protected against itself. */
-        lock_kernel();
+        mutex_lock(&info->bfs_lock);
        /*
         * If the last data block for this file is the last allocated
@@ -151,7 +151,7 @@ static int bfs_get_block(struct inode *inode, sector_t block,
        mark_buffer_dirty(sbh);
        map_bh(bh_result, sb, phys);
 out:
-        unlock_kernel();
+        mutex_unlock(&info->bfs_lock);
        return err;
 }
diff --git a/fs/bfs/inode.c b/fs/bfs/inode.c
index 8db623838b50..0ed57b5ee012 100644
--- a/fs/bfs/inode.c
+++ b/fs/bfs/inode.c
@@ -104,6 +104,7 @@ static int bfs_write_inode(struct inode *inode, int unused)
        struct bfs_inode *di;
        struct buffer_head *bh;
        int block, off;
+        struct bfs_sb_info *info = BFS_SB(inode->i_sb);
        dprintf("ino=%08x\n", ino);
@@ -112,13 +113,13 @@ static int bfs_write_inode(struct inode *inode, int unused)
                return -EIO;
        }
-        lock_kernel();
+        mutex_lock(&info->bfs_lock);
        block = (ino - BFS_ROOT_INO) / BFS_INODES_PER_BLOCK + 1;
        bh = sb_bread(inode->i_sb, block);
        if (!bh) {
                printf("Unable to read inode %s:%08x\n",
                                inode->i_sb->s_id, ino);
-                unlock_kernel();
+                mutex_unlock(&info->bfs_lock);
                return -EIO;
        }
@@ -145,7 +146,7 @@ static int bfs_write_inode(struct inode *inode, int unused)
        mark_buffer_dirty(bh);
        brelse(bh);
-        unlock_kernel();
+        mutex_unlock(&info->bfs_lock);
        return 0;
 }
@@ -170,7 +171,7 @@ static void bfs_delete_inode(struct inode *inode)
        
        inode->i_size = 0;
        inode->i_atime = inode->i_mtime = inode->i_ctime = CURRENT_TIME_SEC;
-        lock_kernel();
+        mutex_lock(&info->bfs_lock);
        mark_inode_dirty(inode);
        block = (ino - BFS_ROOT_INO) / BFS_INODES_PER_BLOCK + 1;
@@ -178,7 +179,7 @@ static void bfs_delete_inode(struct inode *inode)
        if (!bh) {
                printf("Unable to read inode %s:%08lx\n",
                                        inode->i_sb->s_id, ino);
-                unlock_kernel();
+                mutex_unlock(&info->bfs_lock);
                return;
        }
        off = (ino - BFS_ROOT_INO) % BFS_INODES_PER_BLOCK;
@@ -204,14 +205,16 @@ static void bfs_delete_inode(struct inode *inode)
                info->si_lf_eblk = bi->i_sblock - 1;
                mark_buffer_dirty(info->si_sbh);
        }
-        unlock_kernel();
+        mutex_unlock(&info->bfs_lock);
        clear_inode(inode);
 }
 static void bfs_put_super(struct super_block *s)
 {
        struct bfs_sb_info *info = BFS_SB(s);
        brelse(info->si_sbh);
+        mutex_destroy(&info->bfs_lock);
        kfree(info->si_imap);
        kfree(info);
        s->s_fs_info = NULL;
@@ -236,11 +239,13 @@ static int bfs_statfs(struct dentry *dentry, struct kstatfs *buf)
 static void bfs_write_super(struct super_block *s)
 {
-        lock_kernel();
+        struct bfs_sb_info *info = BFS_SB(s);
+        mutex_lock(&info->bfs_lock);
        if (!(s->s_flags & MS_RDONLY))
-                mark_buffer_dirty(BFS_SB(s)->si_sbh);
+                mark_buffer_dirty(info->si_sbh);
        s->s_dirt = 0;
-        unlock_kernel();
+        mutex_unlock(&info->bfs_lock);
 }
 static struct kmem_cache *bfs_inode_cachep;
@@ -259,7 +264,7 @@ static void bfs_destroy_inode(struct inode *inode)
        kmem_cache_free(bfs_inode_cachep, BFS_I(inode));
 }
-static void init_once(struct kmem_cache *cachep, void *foo)
+static void init_once(void *foo)
 {
        struct bfs_inode_info *bi = foo;
@@ -380,7 +385,7 @@ static int bfs_fill_super(struct super_block *s, void *data, int silent)
                struct bfs_inode *di;
                int block = (i - BFS_ROOT_INO) / BFS_INODES_PER_BLOCK + 1;
                int off = (i - BFS_ROOT_INO) % BFS_INODES_PER_BLOCK;
-                unsigned long sblock, eblock;
+                unsigned long eblock;
                if (!off) {
                        brelse(bh);
@@ -399,7 +404,6 @@ static int bfs_fill_super(struct super_block *s, void *data, int silent)
                set_bit(i, info->si_imap);
                info->si_freeb -= BFS_FILEBLOCKS(di);
-                sblock =  le32_to_cpu(di->i_sblock);
                eblock =  le32_to_cpu(di->i_eblock);
                if (eblock > info->si_lf_eblk)
                        info->si_lf_eblk = eblock;
@@ -410,6 +414,7 @@ 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;
 out:
diff --git a/fs/binfmt_aout.c b/fs/binfmt_aout.c
index ba4cddb92f1d..204cfd1d7676 100644
--- a/fs/binfmt_aout.c
+++ b/fs/binfmt_aout.c
@@ -444,12 +444,6 @@ beyond_if:
        regs->gp = ex.a_gpvalue;
 #endif
        start_thread(regs, ex.a_entry, current->mm->start_stack);
-        if (unlikely(current->ptrace & PT_PTRACED)) {
-                if (current->ptrace & PT_TRACE_EXEC)
-                        ptrace_notify ((PTRACE_EVENT_EXEC << 8) | SIGTRAP);
-                else
-                        send_sig(SIGTRAP, current, 0);
-        }
        return 0;
 }
diff --git a/fs/binfmt_elf.c b/fs/binfmt_elf.c
index 3b6ff854d983..655ed8d30a86 100644
--- a/fs/binfmt_elf.c
+++ b/fs/binfmt_elf.c
@@ -1003,12 +1003,6 @@ static int load_elf_binary(struct linux_binprm *bprm, struct pt_regs *regs)
 #endif
        start_thread(regs, elf_entry, bprm->p);
-        if (unlikely(current->ptrace & PT_PTRACED)) {
-                if (current->ptrace & PT_TRACE_EXEC)
-                        ptrace_notify ((PTRACE_EVENT_EXEC << 8) | SIGTRAP);
-                else
-                        send_sig(SIGTRAP, current, 0);
-        }
        retval = 0;
 out:
        kfree(loc);
diff --git a/fs/binfmt_elf_fdpic.c b/fs/binfmt_elf_fdpic.c
index 1b59b1edf26d..fdeadab2f18b 100644
--- a/fs/binfmt_elf_fdpic.c
+++ b/fs/binfmt_elf_fdpic.c
@@ -433,13 +433,6 @@ static int load_elf_fdpic_binary(struct linux_binprm *bprm,
        entryaddr = interp_params.entry_addr ?: exec_params.entry_addr;
        start_thread(regs, entryaddr, current->mm->start_stack);
-        if (unlikely(current->ptrace & PT_PTRACED)) {
-                if (current->ptrace & PT_TRACE_EXEC)
-                        ptrace_notify((PTRACE_EVENT_EXEC << 8) | SIGTRAP);
-                else
-                        send_sig(SIGTRAP, current, 0);
-        }
        retval = 0;
 error:
diff --git a/fs/binfmt_flat.c b/fs/binfmt_flat.c
index 2cb1acda3a82..56372ecf1690 100644
--- a/fs/binfmt_flat.c
+++ b/fs/binfmt_flat.c
@@ -920,9 +920,6 @@ static int load_flat_binary(struct linux_binprm * bprm, struct pt_regs * regs)
        
        start_thread(regs, start_addr, current->mm->start_stack);
-        if (current->ptrace & PT_PTRACED)
-                send_sig(SIGTRAP, current, 0);
        return 0;
 }
diff --git a/fs/binfmt_som.c b/fs/binfmt_som.c
index fdc36bfd6a7b..68be580ba289 100644
--- a/fs/binfmt_som.c
+++ b/fs/binfmt_som.c
@@ -274,8 +274,6 @@ load_som_binary(struct linux_binprm * bprm, struct pt_regs * regs)
        map_hpux_gateway_page(current,current->mm);
        start_thread_som(regs, som_entry, bprm->p);
-        if (current->ptrace & PT_PTRACED)
-                send_sig(SIGTRAP, current, 0);
        return 0;
        /* error cleanup */
diff --git a/fs/bio.c b/fs/bio.c
index 88322b066acb..25f1af0d81e5 100644
--- a/fs/bio.c
+++ b/fs/bio.c
@@ -721,12 +721,8 @@ static struct bio *__bio_map_user_iov(struct request_queue *q,
                const int local_nr_pages = end - start;
                const int page_limit = cur_page + local_nr_pages;
                
-                down_read(&current->mm->mmap_sem);
+                ret = get_user_pages_fast(uaddr, local_nr_pages,
-                ret = get_user_pages(current, current->mm, uaddr,
+                                write_to_vm, &pages[cur_page]);
-                                     local_nr_pages,
-                                     write_to_vm, 0, &pages[cur_page], NULL);
-                up_read(&current->mm->mmap_sem);
                if (ret < local_nr_pages) {
                        ret = -EFAULT;
                        goto out_unmap;
diff --git a/fs/block_dev.c b/fs/block_dev.c
index 10d8a0aa871a..dcf37cada369 100644
--- a/fs/block_dev.c
+++ b/fs/block_dev.c
@@ -271,7 +271,7 @@ static void bdev_destroy_inode(struct inode *inode)
        kmem_cache_free(bdev_cachep, bdi);
 }
-static void init_once(struct kmem_cache * cachep, void *foo)
+static void init_once(void *foo)
 {
        struct bdev_inode *ei = (struct bdev_inode *) foo;
        struct block_device *bdev = &ei->bdev;
diff --git a/fs/buffer.c b/fs/buffer.c
index d48caee12e2a..f95805019639 100644
--- a/fs/buffer.c
+++ b/fs/buffer.c
@@ -706,7 +706,7 @@ static int __set_page_dirty(struct page *page,
        if (TestSetPageDirty(page))
                return 0;
-        write_lock_irq(&mapping->tree_lock);
+        spin_lock_irq(&mapping->tree_lock);
        if (page->mapping) {    /* Race with truncate? */
                WARN_ON_ONCE(warn && !PageUptodate(page));
@@ -719,7 +719,7 @@ static int __set_page_dirty(struct page *page,
                radix_tree_tag_set(&mapping->page_tree,
                                page_index(page), PAGECACHE_TAG_DIRTY);
        }
-        write_unlock_irq(&mapping->tree_lock);
+        spin_unlock_irq(&mapping->tree_lock);
        __mark_inode_dirty(mapping->host, I_DIRTY_PAGES);
        return 1;
@@ -1214,8 +1214,7 @@ void __brelse(struct buffer_head * buf)
                put_bh(buf);
                return;
        }
-        printk(KERN_ERR "VFS: brelse: Trying to free free buffer\n");
+        WARN(1, KERN_ERR "VFS: brelse: Trying to free free buffer\n");
-        WARN_ON(1);
 }
 /*
@@ -3272,7 +3271,7 @@ int bh_submit_read(struct buffer_head *bh)
 EXPORT_SYMBOL(bh_submit_read);
 static void
-init_buffer_head(struct kmem_cache *cachep, void *data)
+init_buffer_head(void *data)
 {
        struct buffer_head *bh = data;
diff --git a/fs/cifs/asn1.c b/fs/cifs/asn1.c
index f58e41d3ba48..6bb440b257b0 100644
--- a/fs/cifs/asn1.c
+++ b/fs/cifs/asn1.c
@@ -400,7 +400,7 @@ asn1_oid_decode(struct asn1_ctx *ctx,
        size = eoc - ctx->pointer + 1;
        /* first subid actually encodes first two subids */
-        if (size < 2 || size > ULONG_MAX/sizeof(unsigned long))
+        if (size < 2 || size > UINT_MAX/sizeof(unsigned long))
                return 0;
        *oid = kmalloc(size * sizeof(unsigned long), GFP_ATOMIC);
@@ -494,7 +494,7 @@ decode_negTokenInit(unsigned char *security_blob, int length,
                /*      remember to free obj->oid */
                rc = asn1_header_decode(&ctx, &end, &cls, &con, &tag);
                if (rc) {
-                        if ((tag == ASN1_OJI) && (cls == ASN1_PRI)) {
+                        if ((tag == ASN1_OJI) && (con == ASN1_PRI)) {
                                rc = asn1_oid_decode(&ctx, end, &oid, &oidlen);
                                if (rc) {
                                        rc = compare_oid(oid, oidlen,
diff --git a/fs/cifs/cifs_debug.c b/fs/cifs/cifs_debug.c
index cc950f69e51e..688a2d42153f 100644
--- a/fs/cifs/cifs_debug.c
+++ b/fs/cifs/cifs_debug.c
@@ -107,9 +107,7 @@ void cifs_dump_mids(struct TCP_Server_Info *server)
 #endif /* CONFIG_CIFS_DEBUG2 */
 #ifdef CONFIG_PROC_FS
-static int
+static int cifs_debug_data_proc_show(struct seq_file *m, void *v)
-cifs_debug_data_read(char *buf, char **beginBuffer, off_t offset,
-                     int count, int *eof, void *data)
 {
        struct list_head *tmp;
        struct list_head *tmp1;
@@ -117,23 +115,13 @@ cifs_debug_data_read(char *buf, char **beginBuffer, off_t offset,
        struct cifsSesInfo *ses;
        struct cifsTconInfo *tcon;
        int i;
-        int length = 0;
-        char *original_buf = buf;
-        *beginBuffer = buf + offset;
+        seq_puts(m,
-        length =
-            sprintf(buf,
                    "Display Internal CIFS Data Structures for Debugging\n"
                    "---------------------------------------------------\n");
-        buf += length;
+        seq_printf(m, "CIFS Version %s\n", CIFS_VERSION);
-        length = sprintf(buf, "CIFS Version %s\n", CIFS_VERSION);
+        seq_printf(m, "Active VFS Requests: %d\n", GlobalTotalActiveXid);
-        buf += length;
+        seq_printf(m, "Servers:");
-        length = sprintf(buf,
-                "Active VFS Requests: %d\n", GlobalTotalActiveXid);
-        buf += length;
-        length = sprintf(buf, "Servers:");
-        buf += length;
        i = 0;
        read_lock(&GlobalSMBSeslock);
@@ -142,11 +130,10 @@ cifs_debug_data_read(char *buf, char **beginBuffer, off_t offset,
                ses = list_entry(tmp, struct cifsSesInfo, cifsSessionList);
                if ((ses->serverDomain == NULL) || (ses->serverOS == NULL) ||
                   (ses->serverNOS == NULL)) {
-                        buf += sprintf(buf, "\nentry for %s not fully "
+                        seq_printf(m, "\nentry for %s not fully "
                                        "displayed\n\t", ses->serverName);
                } else {
-                        length =
+                        seq_printf(m,
-                            sprintf(buf,
                                    "\n%d) Name: %s  Domain: %s Mounts: %d OS:"
                                    " %s  \n\tNOS: %s\tCapability: 0x%x\n\tSMB"
                                    " session status: %d\t",
@@ -154,10 +141,9 @@ cifs_debug_data_read(char *buf, char **beginBuffer, off_t offset,
                                atomic_read(&ses->inUse),
                                ses->serverOS, ses->serverNOS,
                                ses->capabilities, ses->status);
-                        buf += length;
                }
                if (ses->server) {
-                        buf += sprintf(buf, "TCP status: %d\n\tLocal Users To "
+                        seq_printf(m, "TCP status: %d\n\tLocal Users To "
                                    "Server: %d SecMode: 0x%x Req On Wire: %d",
                                ses->server->tcpStatus,
                                atomic_read(&ses->server->socketUseCount),
@@ -165,13 +151,12 @@ cifs_debug_data_read(char *buf, char **beginBuffer, off_t offset,
                                atomic_read(&ses->server->inFlight));
 #ifdef CONFIG_CIFS_STATS2
-                        buf += sprintf(buf, " In Send: %d In MaxReq Wait: %d",
+                        seq_printf(m, " In Send: %d In MaxReq Wait: %d",
                                atomic_read(&ses->server->inSend),
                                atomic_read(&ses->server->num_waiters));
 #endif
-                        length = sprintf(buf, "\nMIDs:\n");
+                        seq_puts(m, "\nMIDs:\n");
-                        buf += length;
                        spin_lock(&GlobalMid_Lock);
                        list_for_each(tmp1, &ses->server->pending_mid_q) {
@@ -179,7 +164,7 @@ cifs_debug_data_read(char *buf, char **beginBuffer, off_t offset,
                                        mid_q_entry,
                                        qhead);
                                if (mid_entry) {
-                                        length = sprintf(buf,
+                                        seq_printf(m,
                                                        "State: %d com: %d pid:"
                                                        " %d tsk: %p mid %d\n",
                                                        mid_entry->midState,
@@ -187,7 +172,6 @@ cifs_debug_data_read(char *buf, char **beginBuffer, off_t offset,
                                                        mid_entry->pid,
                                                        mid_entry->tsk,
                                                        mid_entry->mid);
-                                        buf += length;
                                }
                        }
                        spin_unlock(&GlobalMid_Lock);
@@ -195,11 +179,9 @@ cifs_debug_data_read(char *buf, char **beginBuffer, off_t offset,
        }
        read_unlock(&GlobalSMBSeslock);
-        sprintf(buf, "\n");
+        seq_putc(m, '\n');
-        buf++;
-        length = sprintf(buf, "Shares:");
+        seq_puts(m, "Shares:");
-        buf += length;
        i = 0;
        read_lock(&GlobalSMBSeslock);
@@ -208,62 +190,52 @@ cifs_debug_data_read(char *buf, char **beginBuffer, off_t offset,
                i++;
                tcon = list_entry(tmp, struct cifsTconInfo, cifsConnectionList);
                dev_type = le32_to_cpu(tcon->fsDevInfo.DeviceType);
-                length = sprintf(buf, "\n%d) %s Uses: %d ", i,
+                seq_printf(m, "\n%d) %s Uses: %d ", i,
                                 tcon->treeName, atomic_read(&tcon->useCount));
-                buf += length;
                if (tcon->nativeFileSystem) {
-                        length = sprintf(buf, "Type: %s ",
+                        seq_printf(m, "Type: %s ",
                                         tcon->nativeFileSystem);
-                        buf += length;
                }
-                length = sprintf(buf, "DevInfo: 0x%x Attributes: 0x%x"
+                seq_printf(m, "DevInfo: 0x%x Attributes: 0x%x"
                                 "\nPathComponentMax: %d Status: %d",
                            le32_to_cpu(tcon->fsDevInfo.DeviceCharacteristics),
                            le32_to_cpu(tcon->fsAttrInfo.Attributes),
                            le32_to_cpu(tcon->fsAttrInfo.MaxPathNameComponentLength),
                            tcon->tidStatus);
-                buf += length;
                if (dev_type == FILE_DEVICE_DISK)
-                        length = sprintf(buf, " type: DISK ");
+                        seq_puts(m, " type: DISK ");
                else if (dev_type == FILE_DEVICE_CD_ROM)
-                        length = sprintf(buf, " type: CDROM ");
+                        seq_puts(m, " type: CDROM ");
                else
-                        length =
+                        seq_printf(m, " type: %d ", dev_type);
-                            sprintf(buf, " type: %d ", dev_type);
-                buf += length;
+                if (tcon->tidStatus == CifsNeedReconnect)
-                if (tcon->tidStatus == CifsNeedReconnect) {
+                        seq_puts(m, "\tDISCONNECTED ");
-                        buf += sprintf(buf, "\tDISCONNECTED ");
-                        length += 14;
-                }
        }
        read_unlock(&GlobalSMBSeslock);
-        length = sprintf(buf, "\n");
+        seq_putc(m, '\n');
-        buf += length;
        /* BB add code to dump additional info such as TCP session info now */
-        /* Now calculate total size of returned data */
+        return 0;
-        length = buf - original_buf;
+}
-        if (offset + count >= length)
-                *eof = 1;
-        if (length < offset) {
-                *eof = 1;
-                return 0;
-        } else {
-                length = length - offset;
-        }
-        if (length > count)
-                length = count;
-        return length;
+static int cifs_debug_data_proc_open(struct inode *inode, struct file *file)
+{
+        return single_open(file, cifs_debug_data_proc_show, NULL);
 }
-#ifdef CONFIG_CIFS_STATS
+static const struct file_operations cifs_debug_data_proc_fops = {
+        .owner          = THIS_MODULE,
+        .open           = cifs_debug_data_proc_open,
+        .read           = seq_read,
+        .llseek         = seq_lseek,
+        .release        = single_release,
+};
-static int
+#ifdef CONFIG_CIFS_STATS
-cifs_stats_write(struct file *file, const char __user *buffer,
+static ssize_t cifs_stats_proc_write(struct file *file,
-                 unsigned long count, void *data)
+                const char __user *buffer, size_t count, loff_t *ppos)
 {
        char c;
        int rc;
@@ -307,236 +279,132 @@ cifs_stats_write(struct file *file, const char __user *buffer,
        return count;
 }
-static int
+static int cifs_stats_proc_show(struct seq_file *m, void *v)
-cifs_stats_read(char *buf, char **beginBuffer, off_t offset,
-                  int count, int *eof, void *data)
 {
-        int item_length, i, length;
+        int i;
        struct list_head *tmp;
        struct cifsTconInfo *tcon;
-        *beginBuffer = buf + offset;
+        seq_printf(m,
-        length = sprintf(buf,
                        "Resources in use\nCIFS Session: %d\n",
                        sesInfoAllocCount.counter);
-        buf += length;
+        seq_printf(m, "Share (unique mount targets): %d\n",
-        item_length =
-                sprintf(buf, "Share (unique mount targets): %d\n",
                        tconInfoAllocCount.counter);
-        length += item_length;
+        seq_printf(m, "SMB Request/Response Buffer: %d Pool size: %d\n",
-        buf += item_length;
-        item_length =
-                sprintf(buf, "SMB Request/Response Buffer: %d Pool size: %d\n",
                        bufAllocCount.counter,
                        cifs_min_rcv + tcpSesAllocCount.counter);
-        length += item_length;
+        seq_printf(m, "SMB Small Req/Resp Buffer: %d Pool size: %d\n",
-        buf += item_length;
-        item_length =
-                sprintf(buf, "SMB Small Req/Resp Buffer: %d Pool size: %d\n",
                        smBufAllocCount.counter, cifs_min_small);
-        length += item_length;
-        buf += item_length;
 #ifdef CONFIG_CIFS_STATS2
-        item_length = sprintf(buf, "Total Large %d Small %d Allocations\n",
+        seq_printf(m, "Total Large %d Small %d Allocations\n",
                                atomic_read(&totBufAllocCount),
                                atomic_read(&totSmBufAllocCount));
-        length += item_length;
-        buf += item_length;
 #endif /* CONFIG_CIFS_STATS2 */
-        item_length =
+        seq_printf(m, "Operations (MIDs): %d\n", midCount.counter);
-                sprintf(buf, "Operations (MIDs): %d\n",
+        seq_printf(m,
-                        midCount.counter);
-        length += item_length;
-        buf += item_length;
-        item_length = sprintf(buf,
                "\n%d session %d share reconnects\n",
                tcpSesReconnectCount.counter, tconInfoReconnectCount.counter);
-        length += item_length;
-        buf += item_length;
-        item_length = sprintf(buf,
+        seq_printf(m,
                "Total vfs operations: %d maximum at one time: %d\n",
                GlobalCurrentXid, GlobalMaxActiveXid);
-        length += item_length;
-        buf += item_length;
        i = 0;
        read_lock(&GlobalSMBSeslock);
        list_for_each(tmp, &GlobalTreeConnectionList) {
                i++;
                tcon = list_entry(tmp, struct cifsTconInfo, cifsConnectionList);
-                item_length = sprintf(buf, "\n%d) %s", i, tcon->treeName);
+                seq_printf(m, "\n%d) %s", i, tcon->treeName);
-                buf += item_length;
+                if (tcon->tidStatus == CifsNeedReconnect)
-                length += item_length;
+                        seq_puts(m, "\tDISCONNECTED ");
-                if (tcon->tidStatus == CifsNeedReconnect) {
+                seq_printf(m, "\nSMBs: %d Oplock Breaks: %d",
-                        buf += sprintf(buf, "\tDISCONNECTED ");
-                        length += 14;
-                }
-                item_length = sprintf(buf, "\nSMBs: %d Oplock Breaks: %d",
                        atomic_read(&tcon->num_smbs_sent),
                        atomic_read(&tcon->num_oplock_brks));
-                buf += item_length;
+                seq_printf(m, "\nReads:  %d Bytes: %lld",
-                length += item_length;
-                item_length = sprintf(buf, "\nReads:  %d Bytes: %lld",
                        atomic_read(&tcon->num_reads),
                        (long long)(tcon->bytes_read));
-                buf += item_length;
+                seq_printf(m, "\nWrites: %d Bytes: %lld",
-                length += item_length;
-                item_length = sprintf(buf, "\nWrites: %d Bytes: %lld",
                        atomic_read(&tcon->num_writes),
                        (long long)(tcon->bytes_written));
-                buf += item_length;
+                seq_printf(m,
-                length += item_length;
-                item_length = sprintf(buf,
                        "\nLocks: %d HardLinks: %d Symlinks: %d",
                        atomic_read(&tcon->num_locks),
                        atomic_read(&tcon->num_hardlinks),
                        atomic_read(&tcon->num_symlinks));
-                buf += item_length;
-                length += item_length;
-                item_length = sprintf(buf, "\nOpens: %d Closes: %d Deletes: %d",
+                seq_printf(m, "\nOpens: %d Closes: %d Deletes: %d",
                        atomic_read(&tcon->num_opens),
                        atomic_read(&tcon->num_closes),
                        atomic_read(&tcon->num_deletes));
-                buf += item_length;
+                seq_printf(m, "\nMkdirs: %d Rmdirs: %d",
-                length += item_length;
-                item_length = sprintf(buf, "\nMkdirs: %d Rmdirs: %d",
                        atomic_read(&tcon->num_mkdirs),
                        atomic_read(&tcon->num_rmdirs));
-                buf += item_length;
+                seq_printf(m, "\nRenames: %d T2 Renames %d",
-                length += item_length;
-                item_length = sprintf(buf, "\nRenames: %d T2 Renames %d",
                        atomic_read(&tcon->num_renames),
                        atomic_read(&tcon->num_t2renames));
-                buf += item_length;
+                seq_printf(m, "\nFindFirst: %d FNext %d FClose %d",
-                length += item_length;
-                item_length = sprintf(buf, "\nFindFirst: %d FNext %d FClose %d",
                        atomic_read(&tcon->num_ffirst),
                        atomic_read(&tcon->num_fnext),
                        atomic_read(&tcon->num_fclose));
-                buf += item_length;
-                length += item_length;
        }
        read_unlock(&GlobalSMBSeslock);
-        buf += sprintf(buf, "\n");
+        seq_putc(m, '\n');
-        length++;
+        return 0;
+}
-        if (offset + count >= length)
-                *eof = 1;
-        if (length < offset) {
-                *eof = 1;
-                return 0;
-        } else {
-                length = length - offset;
-        }
-        if (length > count)
-                length = count;
-        return length;
+static int cifs_stats_proc_open(struct inode *inode, struct file *file)
+{
+        return single_open(file, cifs_stats_proc_show, NULL);
 }
+static const struct file_operations cifs_stats_proc_fops = {
+        .owner          = THIS_MODULE,
+        .open           = cifs_stats_proc_open,
+        .read           = seq_read,
+        .llseek         = seq_lseek,
+        .release        = single_release,
+        .write          = cifs_stats_proc_write,
+};
 #endif /* STATS */
 static struct proc_dir_entry *proc_fs_cifs;
-read_proc_t cifs_txanchor_read;
+static const struct file_operations cifsFYI_proc_fops;
-static read_proc_t cifsFYI_read;
+static const struct file_operations cifs_oplock_proc_fops;
-static write_proc_t cifsFYI_write;
+static const struct file_operations cifs_lookup_cache_proc_fops;
-static read_proc_t oplockEnabled_read;
+static const struct file_operations traceSMB_proc_fops;
-static write_proc_t oplockEnabled_write;
+static const struct file_operations cifs_multiuser_mount_proc_fops;
-static read_proc_t lookupFlag_read;
+static const struct file_operations cifs_security_flags_proc_fops;
-static write_proc_t lookupFlag_write;
+static const struct file_operations cifs_experimental_proc_fops;
-static read_proc_t traceSMB_read;
+static const struct file_operations cifs_linux_ext_proc_fops;
-static write_proc_t traceSMB_write;
-static read_proc_t multiuser_mount_read;
-static write_proc_t multiuser_mount_write;
-static read_proc_t security_flags_read;
-static write_proc_t security_flags_write;
-/* static read_proc_t ntlmv2_enabled_read;
-static write_proc_t ntlmv2_enabled_write;
-static read_proc_t packet_signing_enabled_read;
-static write_proc_t packet_signing_enabled_write;*/
-static read_proc_t experimEnabled_read;
-static write_proc_t experimEnabled_write;
-static read_proc_t linuxExtensionsEnabled_read;
-static write_proc_t linuxExtensionsEnabled_write;
 void
 cifs_proc_init(void)
 {
-        struct proc_dir_entry *pde;
        proc_fs_cifs = proc_mkdir("fs/cifs", NULL);
        if (proc_fs_cifs == NULL)
                return;
        proc_fs_cifs->owner = THIS_MODULE;
-        create_proc_read_entry("DebugData", 0, proc_fs_cifs,
+        proc_create("DebugData", 0, proc_fs_cifs, &cifs_debug_data_proc_fops);
-                                cifs_debug_data_read, NULL);
 #ifdef CONFIG_CIFS_STATS
-        pde = create_proc_read_entry("Stats", 0, proc_fs_cifs,
+        proc_create("Stats", 0, proc_fs_cifs, &cifs_stats_proc_fops);
-                                cifs_stats_read, NULL);
-        if (pde)
-                pde->write_proc = cifs_stats_write;
 #endif /* STATS */
-        pde = create_proc_read_entry("cifsFYI", 0, proc_fs_cifs,
+        proc_create("cifsFYI", 0, proc_fs_cifs, &cifsFYI_proc_fops);
-                                cifsFYI_read, NULL);
+        proc_create("traceSMB", 0, proc_fs_cifs, &traceSMB_proc_fops);
-        if (pde)
+        proc_create("OplockEnabled", 0, proc_fs_cifs, &cifs_oplock_proc_fops);
-                pde->write_proc = cifsFYI_write;
+        proc_create("Experimental", 0, proc_fs_cifs,
+                    &cifs_experimental_proc_fops);
-        pde =
+        proc_create("LinuxExtensionsEnabled", 0, proc_fs_cifs,
-            create_proc_read_entry("traceSMB", 0, proc_fs_cifs,
+                    &cifs_linux_ext_proc_fops);
-                                traceSMB_read, NULL);
+        proc_create("MultiuserMount", 0, proc_fs_cifs,
-        if (pde)
+                    &cifs_multiuser_mount_proc_fops);
-                pde->write_proc = traceSMB_write;
+        proc_create("SecurityFlags", 0, proc_fs_cifs,
+                    &cifs_security_flags_proc_fops);
-        pde = create_proc_read_entry("OplockEnabled", 0, proc_fs_cifs,
+        proc_create("LookupCacheEnabled", 0, proc_fs_cifs,
-                                oplockEnabled_read, NULL);
+                    &cifs_lookup_cache_proc_fops);
-        if (pde)
-                pde->write_proc = oplockEnabled_write;
-        pde = create_proc_read_entry("Experimental", 0, proc_fs_cifs,
-                                experimEnabled_read, NULL);
-        if (pde)
-                pde->write_proc = experimEnabled_write;
-        pde = create_proc_read_entry("LinuxExtensionsEnabled", 0, proc_fs_cifs,
-                                linuxExtensionsEnabled_read, NULL);
-        if (pde)
-                pde->write_proc = linuxExtensionsEnabled_write;
-        pde =
-            create_proc_read_entry("MultiuserMount", 0, proc_fs_cifs,
-                                multiuser_mount_read, NULL);
-        if (pde)
-                pde->write_proc = multiuser_mount_write;
-        pde =
-            create_proc_read_entry("SecurityFlags", 0, proc_fs_cifs,
-                                security_flags_read, NULL);
-        if (pde)
-                pde->write_proc = security_flags_write;
-        pde =
-        create_proc_read_entry("LookupCacheEnabled", 0, proc_fs_cifs,
-                                lookupFlag_read, NULL);
-        if (pde)
-                pde->write_proc = lookupFlag_write;
-/*      pde =
-            create_proc_read_entry("NTLMV2Enabled", 0, proc_fs_cifs,
-                                ntlmv2_enabled_read, NULL);
-        if (pde)
-                pde->write_proc = ntlmv2_enabled_write;
-        pde =
-            create_proc_read_entry("PacketSigningEnabled", 0, proc_fs_cifs,
-                                packet_signing_enabled_read, NULL);
-        if (pde)
-                pde->write_proc = packet_signing_enabled_write;*/
 }
 void
@@ -553,39 +421,26 @@ cifs_proc_clean(void)
 #endif
        remove_proc_entry("MultiuserMount", proc_fs_cifs);
        remove_proc_entry("OplockEnabled", proc_fs_cifs);
-/*      remove_proc_entry("NTLMV2Enabled",proc_fs_cifs); */
        remove_proc_entry("SecurityFlags", proc_fs_cifs);
-/*      remove_proc_entry("PacketSigningEnabled", proc_fs_cifs); */
        remove_proc_entry("LinuxExtensionsEnabled", proc_fs_cifs);
        remove_proc_entry("Experimental", proc_fs_cifs);
        remove_proc_entry("LookupCacheEnabled", proc_fs_cifs);
        remove_proc_entry("fs/cifs", NULL);
 }
-static int
+static int cifsFYI_proc_show(struct seq_file *m, void *v)
-cifsFYI_read(char *page, char **start, off_t off, int count,
-             int *eof, void *data)
 {
-        int len;
+        seq_printf(m, "%d\n", cifsFYI);
+        return 0;
-        len = sprintf(page, "%d\n", cifsFYI);
+}
-        len -= off;
-        *start = page + off;
-        if (len > count)
-                len = count;
-        else
-                *eof = 1;
-        if (len < 0)
-                len = 0;
-        return len;
+static int cifsFYI_proc_open(struct inode *inode, struct file *file)
+{
+        return single_open(file, cifsFYI_proc_show, NULL);
 }
-static int
-cifsFYI_write(struct file *file, const char __user *buffer,
+static ssize_t cifsFYI_proc_write(struct file *file, const char __user *buffer,
-              unsigned long count, void *data)
+                size_t count, loff_t *ppos)
 {
        char c;
        int rc;
@@ -603,30 +458,28 @@ cifsFYI_write(struct file *file, const char __user *buffer,
        return count;
 }
-static int
+static const struct file_operations cifsFYI_proc_fops = {
-oplockEnabled_read(char *page, char **start, off_t off,
+        .owner          = THIS_MODULE,
-                   int count, int *eof, void *data)
+        .open           = cifsFYI_proc_open,
-{
+        .read           = seq_read,
-        int len;
+        .llseek         = seq_lseek,
+        .release        = single_release,
-        len = sprintf(page, "%d\n", oplockEnabled);
+        .write          = cifsFYI_proc_write,
+};
-        len -= off;
-        *start = page + off;
-        if (len > count)
-                len = count;
-        else
-                *eof = 1;
-        if (len < 0)
+static int cifs_oplock_proc_show(struct seq_file *m, void *v)
-                len = 0;
+{
+        seq_printf(m, "%d\n", oplockEnabled);
+        return 0;
+}
-        return len;
+static int cifs_oplock_proc_open(struct inode *inode, struct file *file)
+{
+        return single_open(file, cifs_oplock_proc_show, NULL);
 }
-static int
-oplockEnabled_write(struct file *file, const char __user *buffer,
+static ssize_t cifs_oplock_proc_write(struct file *file,
-                    unsigned long count, void *data)
+                const char __user *buffer, size_t count, loff_t *ppos)
 {
        char c;
        int rc;
@@ -642,30 +495,28 @@ oplockEnabled_write(struct file *file, const char __user *buffer,
        return count;
 }
-static int
+static const struct file_operations cifs_oplock_proc_fops = {
-experimEnabled_read(char *page, char **start, off_t off,
+        .owner          = THIS_MODULE,
-                    int count, int *eof, void *data)
+        .open           = cifs_oplock_proc_open,
-{
+        .read           = seq_read,
-        int len;
+        .llseek         = seq_lseek,
+        .release        = single_release,
-        len = sprintf(page, "%d\n", experimEnabled);
+        .write          = cifs_oplock_proc_write,
+};
-        len -= off;
-        *start = page + off;
-        if (len > count)
+static int cifs_experimental_proc_show(struct seq_file *m, void *v)
-                len = count;
+{
-        else
+        seq_printf(m, "%d\n", experimEnabled);
-                *eof = 1;
+        return 0;
+}
-        if (len < 0)
-                len = 0;
-        return len;
+static int cifs_experimental_proc_open(struct inode *inode, struct file *file)
+{
+        return single_open(file, cifs_experimental_proc_show, NULL);
 }
-static int
-experimEnabled_write(struct file *file, const char __user *buffer,
+static ssize_t cifs_experimental_proc_write(struct file *file,
-                     unsigned long count, void *data)
+                const char __user *buffer, size_t count, loff_t *ppos)
 {
        char c;
        int rc;
@@ -683,29 +534,28 @@ experimEnabled_write(struct file *file, const char __user *buffer,
        return count;
 }
-static int
+static const struct file_operations cifs_experimental_proc_fops = {
-linuxExtensionsEnabled_read(char *page, char **start, off_t off,
+        .owner          = THIS_MODULE,
-                            int count, int *eof, void *data)
+        .open           = cifs_experimental_proc_open,
-{
+        .read           = seq_read,
-        int len;
+        .llseek         = seq_lseek,
+        .release        = single_release,
-        len = sprintf(page, "%d\n", linuxExtEnabled);
+        .write          = cifs_experimental_proc_write,
-        len -= off;
+};
-        *start = page + off;
-        if (len > count)
+static int cifs_linux_ext_proc_show(struct seq_file *m, void *v)
-                len = count;
+{
-        else
+        seq_printf(m, "%d\n", linuxExtEnabled);
-                *eof = 1;
+        return 0;
+}
-        if (len < 0)
-                len = 0;
-        return len;
+static int cifs_linux_ext_proc_open(struct inode *inode, struct file *file)
+{
+        return single_open(file, cifs_linux_ext_proc_show, NULL);
 }
-static int
-linuxExtensionsEnabled_write(struct file *file, const char __user *buffer,
+static ssize_t cifs_linux_ext_proc_write(struct file *file,
-                             unsigned long count, void *data)
+                const char __user *buffer, size_t count, loff_t *ppos)
 {
        char c;
        int rc;
@@ -721,31 +571,28 @@ linuxExtensionsEnabled_write(struct file *file, const char __user *buffer,
        return count;
 }
+static const struct file_operations cifs_linux_ext_proc_fops = {
+        .owner          = THIS_MODULE,
+        .open           = cifs_linux_ext_proc_open,
+        .read           = seq_read,
+        .llseek         = seq_lseek,
+        .release        = single_release,
+        .write          = cifs_linux_ext_proc_write,
+};
-static int
+static int cifs_lookup_cache_proc_show(struct seq_file *m, void *v)
-lookupFlag_read(char *page, char **start, off_t off,
-                int count, int *eof, void *data)
 {
-        int len;
+        seq_printf(m, "%d\n", lookupCacheEnabled);
+        return 0;
-        len = sprintf(page, "%d\n", lookupCacheEnabled);
+}
-        len -= off;
-        *start = page + off;
-        if (len > count)
-                len = count;
-        else
-                *eof = 1;
-        if (len < 0)
-                len = 0;
-        return len;
+static int cifs_lookup_cache_proc_open(struct inode *inode, struct file *file)
+{
+        return single_open(file, cifs_lookup_cache_proc_show, NULL);
 }
-static int
-lookupFlag_write(struct file *file, const char __user *buffer,
+static ssize_t cifs_lookup_cache_proc_write(struct file *file,
-                    unsigned long count, void *data)
+                const char __user *buffer, size_t count, loff_t *ppos)
 {
        char c;
        int rc;
@@ -760,30 +607,29 @@ lookupFlag_write(struct file *file, const char __user *buffer,
        return count;
 }
-static int
-traceSMB_read(char *page, char **start, off_t off, int count,
-              int *eof, void *data)
-{
-        int len;
-        len = sprintf(page, "%d\n", traceSMB);
-        len -= off;
-        *start = page + off;
-        if (len > count)
+static const struct file_operations cifs_lookup_cache_proc_fops = {
-                len = count;
+        .owner          = THIS_MODULE,
-        else
+        .open           = cifs_lookup_cache_proc_open,
-                *eof = 1;
+        .read           = seq_read,
+        .llseek         = seq_lseek,
+        .release        = single_release,
+        .write          = cifs_lookup_cache_proc_write,
+};
-        if (len < 0)
+static int traceSMB_proc_show(struct seq_file *m, void *v)
-                len = 0;
+{
+        seq_printf(m, "%d\n", traceSMB);
+        return 0;
+}
-        return len;
+static int traceSMB_proc_open(struct inode *inode, struct file *file)
+{
+        return single_open(file, traceSMB_proc_show, NULL);
 }
-static int
-traceSMB_write(struct file *file, const char __user *buffer,
+static ssize_t traceSMB_proc_write(struct file *file, const char __user *buffer,
-               unsigned long count, void *data)
+                size_t count, loff_t *ppos)
 {
        char c;
        int rc;
@@ -799,30 +645,28 @@ traceSMB_write(struct file *file, const char __user *buffer,
        return count;
 }
-static int
+static const struct file_operations traceSMB_proc_fops = {
-multiuser_mount_read(char *page, char **start, off_t off,
+        .owner          = THIS_MODULE,
-                     int count, int *eof, void *data)
+        .open           = traceSMB_proc_open,
-{
+        .read           = seq_read,
-        int len;
+        .llseek         = seq_lseek,
+        .release        = single_release,
-        len = sprintf(page, "%d\n", multiuser_mount);
+        .write          = traceSMB_proc_write,
+};
-        len -= off;
-        *start = page + off;
-        if (len > count)
+static int cifs_multiuser_mount_proc_show(struct seq_file *m, void *v)
-                len = count;
+{
-        else
+        seq_printf(m, "%d\n", multiuser_mount);
-                *eof = 1;
+        return 0;
+}
-        if (len < 0)
-                len = 0;
-        return len;
+static int cifs_multiuser_mount_proc_open(struct inode *inode, struct file *fh)
+{
+        return single_open(fh, cifs_multiuser_mount_proc_show, NULL);
 }
-static int
-multiuser_mount_write(struct file *file, const char __user *buffer,
+static ssize_t cifs_multiuser_mount_proc_write(struct file *file,
-                      unsigned long count, void *data)
+                const char __user *buffer, size_t count, loff_t *ppos)
 {
        char c;
        int rc;
@@ -838,30 +682,28 @@ multiuser_mount_write(struct file *file, const char __user *buffer,
        return count;
 }
-static int
+static const struct file_operations cifs_multiuser_mount_proc_fops = {
-security_flags_read(char *page, char **start, off_t off,
+        .owner          = THIS_MODULE,
-                       int count, int *eof, void *data)
+        .open           = cifs_multiuser_mount_proc_open,
-{
+        .read           = seq_read,
-        int len;
+        .llseek         = seq_lseek,
+        .release        = single_release,
-        len = sprintf(page, "0x%x\n", extended_security);
+        .write          = cifs_multiuser_mount_proc_write,
+};
-        len -= off;
-        *start = page + off;
-        if (len > count)
+static int cifs_security_flags_proc_show(struct seq_file *m, void *v)
-                len = count;
+{
-        else
+        seq_printf(m, "0x%x\n", extended_security);
-                *eof = 1;
+        return 0;
+}
-        if (len < 0)
-                len = 0;
-        return len;
+static int cifs_security_flags_proc_open(struct inode *inode, struct file *file)
+{
+        return single_open(file, cifs_security_flags_proc_show, NULL);
 }
-static int
-security_flags_write(struct file *file, const char __user *buffer,
+static ssize_t cifs_security_flags_proc_write(struct file *file,
-                        unsigned long count, void *data)
+                const char __user *buffer, size_t count, loff_t *ppos)
 {
        unsigned int flags;
        char flags_string[12];
@@ -917,6 +759,15 @@ security_flags_write(struct file *file, const char __user *buffer,
        /* BB should we turn on MAY flags for other MUST options? */
        return count;
 }
+static const struct file_operations cifs_security_flags_proc_fops = {
+        .owner          = THIS_MODULE,
+        .open           = cifs_security_flags_proc_open,
+        .read           = seq_read,
+        .llseek         = seq_lseek,
+        .release        = single_release,
+        .write          = cifs_security_flags_proc_write,
+};
 #else
 inline void cifs_proc_init(void)
 {
diff --git a/fs/cifs/cifsacl.c b/fs/cifs/cifsacl.c
index 0e9fc2ba90ee..57ecdc83c26f 100644
--- a/fs/cifs/cifsacl.c
+++ b/fs/cifs/cifsacl.c
@@ -56,7 +56,7 @@ int match_sid(struct cifs_sid *ctsid)
        struct cifs_sid *cwsid;
        if (!ctsid)
-                return (-1);
+                return -1;
        for (i = 0; i < NUM_WK_SIDS; ++i) {
                cwsid = &(wksidarr[i].cifssid);
@@ -87,11 +87,11 @@ int match_sid(struct cifs_sid *ctsid)
                }
                cFYI(1, ("matching sid: %s\n", wksidarr[i].sidname));
-                return (0); /* sids compare/match */
+                return 0; /* sids compare/match */
        }
        cFYI(1, ("No matching sid"));
-        return (-1);
+        return -1;
 }
 /* if the two SIDs (roughly equivalent to a UUID for a user or group) are
@@ -102,16 +102,16 @@ int compare_sids(const struct cifs_sid *ctsid, const struct cifs_sid *cwsid)
        int num_subauth, num_sat, num_saw;
        if ((!ctsid) || (!cwsid))
-                return (0);
+                return 0;
        /* compare the revision */
        if (ctsid->revision != cwsid->revision)
-                return (0);
+                return 0;
        /* compare all of the six auth values */
        for (i = 0; i < 6; ++i) {
                if (ctsid->authority[i] != cwsid->authority[i])
-                        return (0);
+                        return 0;
        }
        /* compare all of the subauth values if any */
@@ -121,11 +121,11 @@ int compare_sids(const struct cifs_sid *ctsid, const struct cifs_sid *cwsid)
        if (num_subauth) {
                for (i = 0; i < num_subauth; ++i) {
                        if (ctsid->sub_auth[i] != cwsid->sub_auth[i])
-                                return (0);
+                                return 0;
                }
        }
-        return (1); /* sids compare/match */
+        return 1; /* sids compare/match */
 }
@@ -169,8 +169,7 @@ static void copy_sec_desc(const struct cifs_ntsd *pntsd,
        for (i = 0; i < 6; i++)
                ngroup_sid_ptr->authority[i] = group_sid_ptr->authority[i];
        for (i = 0; i < 5; i++)
-                ngroup_sid_ptr->sub_auth[i] =
+                ngroup_sid_ptr->sub_auth[i] = group_sid_ptr->sub_auth[i];
-                                cpu_to_le32(group_sid_ptr->sub_auth[i]);
        return;
 }
@@ -285,7 +284,7 @@ static __u16 fill_ace_for_sid(struct cifs_ace *pntace,
        size = 1 + 1 + 2 + 4 + 1 + 1 + 6 + (psid->num_subauth * 4);
        pntace->size = cpu_to_le16(size);
-        return (size);
+        return size;
 }
@@ -426,7 +425,7 @@ static int set_chmod_dacl(struct cifs_acl *pndacl, struct cifs_sid *pownersid,
        pndacl->size = cpu_to_le16(size + sizeof(struct cifs_acl));
        pndacl->num_aces = cpu_to_le32(3);
-        return (0);
+        return 0;
 }
@@ -510,7 +509,7 @@ static int parse_sec_desc(struct cifs_ntsd *pntsd, int acl_len,
                        sizeof(struct cifs_sid)); */
-        return (0);
+        return 0;
 }
@@ -527,7 +526,7 @@ static int build_sec_desc(struct cifs_ntsd *pntsd, struct cifs_ntsd *pnntsd,
        struct cifs_acl *ndacl_ptr = NULL; /* no need for SACL ptr */
        if ((inode == NULL) || (pntsd == NULL) || (pnntsd == NULL))
-                return (-EIO);
+                return -EIO;
        owner_sid_ptr = (struct cifs_sid *)((char *)pntsd +
                                le32_to_cpu(pntsd->osidoffset));
@@ -550,7 +549,7 @@ static int build_sec_desc(struct cifs_ntsd *pntsd, struct cifs_ntsd *pnntsd,
        /* copy security descriptor control portion and owner and group sid */
        copy_sec_desc(pntsd, pnntsd, sidsoffset);
-        return (rc);
+        return rc;
 }
@@ -629,11 +628,11 @@ static int set_cifs_acl(struct cifs_ntsd *pnntsd, __u32 acllen,
        cFYI(DBG2, ("set ACL for %s from mode 0x%x", path, inode->i_mode));
        if (!inode)
-                return (rc);
+                return rc;
        sb = inode->i_sb;
        if (sb == NULL)
-                return (rc);
+                return rc;
        cifs_sb = CIFS_SB(sb);
        xid = GetXid();
@@ -652,7 +651,7 @@ static int set_cifs_acl(struct cifs_ntsd *pnntsd, __u32 acllen,
                if (rc != 0) {
                        cERROR(1, ("Unable to open file to set ACL"));
                        FreeXid(xid);
-                        return (rc);
+                        return rc;
                }
        }
@@ -665,7 +664,7 @@ static int set_cifs_acl(struct cifs_ntsd *pnntsd, __u32 acllen,
        FreeXid(xid);
-        return (rc);
+        return rc;
 }
 /* Translate the CIFS ACL (simlar to NTFS ACL) for a file into mode bits */
@@ -715,7 +714,7 @@ int mode_to_acl(struct inode *inode, const char *path, __u64 nmode)
                if (!pnntsd) {
                        cERROR(1, ("Unable to allocate security descriptor"));
                        kfree(pntsd);
-                        return (-ENOMEM);
+                        return -ENOMEM;
                }
                rc = build_sec_desc(pntsd, pnntsd, inode, nmode);
@@ -732,6 +731,6 @@ int mode_to_acl(struct inode *inode, const char *path, __u64 nmode)
                kfree(pntsd);
        }
-        return (rc);
+        return rc;
 }
 #endif /* CONFIG_CIFS_EXPERIMENTAL */
diff --git a/fs/cifs/cifsencrypt.c b/fs/cifs/cifsencrypt.c
index 4ff8939c6cc7..83fd40dc1ef0 100644
--- a/fs/cifs/cifsencrypt.c
+++ b/fs/cifs/cifsencrypt.c
@@ -310,9 +310,8 @@ void calc_lanman_hash(struct cifsSesInfo *ses, char *lnm_session_key)
        utf8 and other multibyte codepages each need their own strupper
        function since a byte at a time will ont work. */
-        for (i = 0; i < CIFS_ENCPWD_SIZE; i++) {
+        for (i = 0; i < CIFS_ENCPWD_SIZE; i++)
                password_with_pad[i] = toupper(password_with_pad[i]);
-        }
        SMBencrypt(password_with_pad, ses->server->cryptKey, lnm_session_key);
        /* clear password before we return/free memory */
diff --git a/fs/cifs/cifsfs.c b/fs/cifs/cifsfs.c
index 22857c639df5..1ec7076f7b24 100644
--- a/fs/cifs/cifsfs.c
+++ b/fs/cifs/cifsfs.c
@@ -267,7 +267,7 @@ cifs_statfs(struct dentry *dentry, struct kstatfs *buf)
        return 0;
 }
-static int cifs_permission(struct inode *inode, int mask, struct nameidata *nd)
+static int cifs_permission(struct inode *inode, int mask)
 {
        struct cifs_sb_info *cifs_sb;
@@ -766,7 +766,7 @@ const struct file_operations cifs_dir_ops = {
 };
 static void
-cifs_init_once(struct kmem_cache *cachep, void *inode)
+cifs_init_once(void *inode)
 {
        struct cifsInodeInfo *cifsi = inode;
diff --git a/fs/cifs/cifsglob.h b/fs/cifs/cifsglob.h
index 9cfcf326ead3..7e1cf262effe 100644
--- a/fs/cifs/cifsglob.h
+++ b/fs/cifs/cifsglob.h
@@ -27,7 +27,7 @@
 #define MAX_SES_INFO 2
 #define MAX_TCON_INFO 4
-#define MAX_TREE_SIZE 2 + MAX_SERVER_SIZE + 1 + MAX_SHARE_SIZE + 1
+#define MAX_TREE_SIZE (2 + MAX_SERVER_SIZE + 1 + MAX_SHARE_SIZE + 1)
 #define MAX_SERVER_SIZE 15
 #define MAX_SHARE_SIZE  64      /* used to be 20, this should still be enough */
 #define MAX_USERNAME_SIZE 32    /* 32 is to allow for 15 char names + null
@@ -537,8 +537,8 @@ require use of the stronger protocol */
 #endif /* WEAK_PW_HASH */
 #define   CIFSSEC_MUST_SEAL     0x40040 /* not supported yet */
-#define   CIFSSEC_DEF  CIFSSEC_MAY_SIGN | CIFSSEC_MAY_NTLM | CIFSSEC_MAY_NTLMV2
+#define   CIFSSEC_DEF (CIFSSEC_MAY_SIGN | CIFSSEC_MAY_NTLM | CIFSSEC_MAY_NTLMV2)
-#define   CIFSSEC_MAX  CIFSSEC_MUST_SIGN | CIFSSEC_MUST_NTLMV2
+#define   CIFSSEC_MAX (CIFSSEC_MUST_SIGN | CIFSSEC_MUST_NTLMV2)
 #define   CIFSSEC_AUTH_MASK (CIFSSEC_MAY_NTLM | CIFSSEC_MAY_NTLMV2 | CIFSSEC_MAY_LANMAN | CIFSSEC_MAY_PLNTXT | CIFSSEC_MAY_KRB5)
 /*
 *****************************************************************
diff --git a/fs/cifs/cifspdu.h b/fs/cifs/cifspdu.h
index 0f327c224da3..409abce12732 100644
--- a/fs/cifs/cifspdu.h
+++ b/fs/cifs/cifspdu.h
@@ -31,7 +31,7 @@
 #else
 #define CIFS_PROT   0
 #endif
-#define POSIX_PROT  CIFS_PROT+1
+#define POSIX_PROT  (CIFS_PROT+1)
 #define BAD_PROT 0xFFFF
 /* SMB command codes */
@@ -341,7 +341,7 @@
 #define CREATE_COMPLETE_IF_OPLK 0x00000100      /* should be zero */
 #define CREATE_NO_EA_KNOWLEDGE  0x00000200
 #define CREATE_EIGHT_DOT_THREE  0x00000400      /* doc says this is obsolete
-                                                 "open for recovery" flag - should
+                                                 "open for recovery" flag should
                                                 be zero in any case */
 #define CREATE_OPEN_FOR_RECOVERY 0x00000400
 #define CREATE_RANDOM_ACCESS    0x00000800
@@ -414,8 +414,8 @@ struct smb_hdr {
        __u8 WordCount;
 } __attribute__((packed));
 /* given a pointer to an smb_hdr retrieve the value of byte count */
-#define BCC(smb_var) ( *(__u16 *)((char *)smb_var + sizeof(struct smb_hdr) + (2 * smb_var->WordCount)))
+#define BCC(smb_var) (*(__u16 *)((char *)smb_var + sizeof(struct smb_hdr) + (2 * smb_var->WordCount)))
-#define BCC_LE(smb_var) ( *(__le16 *)((char *)smb_var + sizeof(struct smb_hdr) + (2 * smb_var->WordCount)))
+#define BCC_LE(smb_var) (*(__le16 *)((char *)smb_var + sizeof(struct smb_hdr) + (2 * smb_var->WordCount)))
 /* given a pointer to an smb_hdr retrieve the pointer to the byte area */
 #define pByteArea(smb_var) ((unsigned char *)smb_var + sizeof(struct smb_hdr) + (2 * smb_var->WordCount) + 2)
diff --git a/fs/cifs/cifssmb.c b/fs/cifs/cifssmb.c
index 4511b708f0f3..c621ffa2ca90 100644
--- a/fs/cifs/cifssmb.c
+++ b/fs/cifs/cifssmb.c
@@ -686,11 +686,10 @@ CIFSSMBNegotiate(unsigned int xid, struct cifsSesInfo *ses)
                                                 SecurityBlob,
                                                 count - 16,
                                                 &server->secType);
-                        if (rc == 1) {
+                        if (rc == 1)
                                rc = 0;
-                        } else {
+                        else
                                rc = -EINVAL;
-                        }
                }
        } else
                server->capabilities &= ~CAP_EXTENDED_SECURITY;
@@ -3914,7 +3913,10 @@ parse_DFS_referrals(TRANSACTION2_GET_DFS_REFER_RSP *pSMBr,
        bool is_unicode;
        struct dfs_referral_level_3 *ref;
-        is_unicode = pSMBr->hdr.Flags2 & SMBFLG2_UNICODE;
+        if (pSMBr->hdr.Flags2 & SMBFLG2_UNICODE)
+                is_unicode = true;
+        else
+                is_unicode = false;
        *num_of_nodes = le16_to_cpu(pSMBr->NumberOfReferrals);
        if (*num_of_nodes < 1) {
diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c
index e8fa46c7cff2..b51d5777cde6 100644
--- a/fs/cifs/connect.c
+++ b/fs/cifs/connect.c
@@ -455,7 +455,7 @@ incomplete_rcv:
                /* Note that FC 1001 length is big endian on the wire,
                but we convert it here so it is always manipulated
                as host byte order */
-                pdu_length = ntohl(smb_buffer->smb_buf_length);
+                pdu_length = be32_to_cpu((__force __be32)smb_buffer->smb_buf_length);
                smb_buffer->smb_buf_length = pdu_length;
                cFYI(1, ("rfc1002 length 0x%x", pdu_length+4));
@@ -1461,6 +1461,39 @@ get_dfs_path(int xid, struct cifsSesInfo *pSesInfo, const char *old_path,
        return rc;
 }
+#ifdef CONFIG_DEBUG_LOCK_ALLOC
+static struct lock_class_key cifs_key[2];
+static struct lock_class_key cifs_slock_key[2];
+static inline void
+cifs_reclassify_socket4(struct socket *sock)
+{
+        struct sock *sk = sock->sk;
+        BUG_ON(sock_owned_by_user(sk));
+        sock_lock_init_class_and_name(sk, "slock-AF_INET-CIFS",
+                &cifs_slock_key[0], "sk_lock-AF_INET-CIFS", &cifs_key[0]);
+}
+static inline void
+cifs_reclassify_socket6(struct socket *sock)
+{
+        struct sock *sk = sock->sk;
+        BUG_ON(sock_owned_by_user(sk));
+        sock_lock_init_class_and_name(sk, "slock-AF_INET6-CIFS",
+                &cifs_slock_key[1], "sk_lock-AF_INET6-CIFS", &cifs_key[1]);
+}
+#else
+static inline void
+cifs_reclassify_socket4(struct socket *sock)
+{
+}
+static inline void
+cifs_reclassify_socket6(struct socket *sock)
+{
+}
+#endif
 /* See RFC1001 section 14 on representation of Netbios names */
 static void rfc1002mangle(char *target, char *source, unsigned int length)
 {
@@ -1495,6 +1528,7 @@ ipv4_connect(struct sockaddr_in *psin_server, struct socket **csocket,
                /* BB other socket options to set KEEPALIVE, NODELAY? */
                        cFYI(1, ("Socket created"));
                        (*csocket)->sk->sk_allocation = GFP_NOFS;
+                        cifs_reclassify_socket4(*csocket);
                }
        }
@@ -1627,6 +1661,7 @@ ipv6_connect(struct sockaddr_in6 *psin_server, struct socket **csocket)
                /* BB other socket options to set KEEPALIVE, NODELAY? */
                         cFYI(1, ("ipv6 Socket created"));
                        (*csocket)->sk->sk_allocation = GFP_NOFS;
+                        cifs_reclassify_socket6(*csocket);
                }
        }
diff --git a/fs/cifs/inode.c b/fs/cifs/inode.c
index 2e904bd111c8..46e54d39461d 100644
--- a/fs/cifs/inode.c
+++ b/fs/cifs/inode.c
@@ -1413,6 +1413,82 @@ out_busy:
        return -ETXTBSY;
 }
+static int
+cifs_set_file_size(struct inode *inode, struct iattr *attrs,
+                   int xid, char *full_path)
+{
+        int rc;
+        struct cifsFileInfo *open_file;
+        struct cifsInodeInfo *cifsInode = CIFS_I(inode);
+        struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
+        struct cifsTconInfo *pTcon = cifs_sb->tcon;
+        /*
+         * To avoid spurious oplock breaks from server, in the case of
+         * inodes that we already have open, avoid doing path based
+         * setting of file size if we can do it by handle.
+         * This keeps our caching token (oplock) and avoids timeouts
+         * when the local oplock break takes longer to flush
+         * writebehind data than the SMB timeout for the SetPathInfo
+         * request would allow
+         */
+        open_file = find_writable_file(cifsInode);
+        if (open_file) {
+                __u16 nfid = open_file->netfid;
+                __u32 npid = open_file->pid;
+                rc = CIFSSMBSetFileSize(xid, pTcon, attrs->ia_size, nfid,
+                                        npid, false);
+                atomic_dec(&open_file->wrtPending);
+                cFYI(1, ("SetFSize for attrs rc = %d", rc));
+                if ((rc == -EINVAL) || (rc == -EOPNOTSUPP)) {
+                        unsigned int bytes_written;
+                        rc = CIFSSMBWrite(xid, pTcon, nfid, 0, attrs->ia_size,
+                                          &bytes_written, NULL, NULL, 1);
+                        cFYI(1, ("Wrt seteof rc %d", rc));
+                }
+        } else
+                rc = -EINVAL;
+        if (rc != 0) {
+                /* Set file size by pathname rather than by handle
+                   either because no valid, writeable file handle for
+                   it was found or because there was an error setting
+                   it by handle */
+                rc = CIFSSMBSetEOF(xid, pTcon, full_path, attrs->ia_size,
+                                   false, cifs_sb->local_nls,
+                                   cifs_sb->mnt_cifs_flags &
+                                        CIFS_MOUNT_MAP_SPECIAL_CHR);
+                cFYI(1, ("SetEOF by path (setattrs) rc = %d", rc));
+                if ((rc == -EINVAL) || (rc == -EOPNOTSUPP)) {
+                        __u16 netfid;
+                        int oplock = 0;
+                        rc = SMBLegacyOpen(xid, pTcon, full_path,
+                                FILE_OPEN, GENERIC_WRITE,
+                                CREATE_NOT_DIR, &netfid, &oplock, NULL,
+                                cifs_sb->local_nls,
+                                cifs_sb->mnt_cifs_flags &
+                                        CIFS_MOUNT_MAP_SPECIAL_CHR);
+                        if (rc == 0) {
+                                unsigned int bytes_written;
+                                rc = CIFSSMBWrite(xid, pTcon, netfid, 0,
+                                                  attrs->ia_size,
+                                                  &bytes_written, NULL,
+                                                  NULL, 1);
+                                cFYI(1, ("wrt seteof rc %d", rc));
+                                CIFSSMBClose(xid, pTcon, netfid);
+                        }
+                }
+        }
+        if (rc == 0) {
+                rc = cifs_vmtruncate(inode, attrs->ia_size);
+                cifs_truncate_page(inode->i_mapping, inode->i_size);
+        }
+        return rc;
+}
 int cifs_setattr(struct dentry *direntry, struct iattr *attrs)
 {
        int xid;
@@ -1420,7 +1496,6 @@ int cifs_setattr(struct dentry *direntry, struct iattr *attrs)
        struct cifsTconInfo *pTcon;
        char *full_path = NULL;
        int rc = -EACCES;
-        struct cifsFileInfo *open_file = NULL;
        FILE_BASIC_INFO time_buf;
        bool set_time = false;
        bool set_dosattr = false;
@@ -1472,78 +1547,8 @@ int cifs_setattr(struct dentry *direntry, struct iattr *attrs)
        }
        if (attrs->ia_valid & ATTR_SIZE) {
-                /* To avoid spurious oplock breaks from server, in the case of
+                rc = cifs_set_file_size(inode, attrs, xid, full_path);
-                   inodes that we already have open, avoid doing path based
+                if (rc != 0)
-                   setting of file size if we can do it by handle.
-                   This keeps our caching token (oplock) and avoids timeouts
-                   when the local oplock break takes longer to flush
-                   writebehind data than the SMB timeout for the SetPathInfo
-                   request would allow */
-                open_file = find_writable_file(cifsInode);
-                if (open_file) {
-                        __u16 nfid = open_file->netfid;
-                        __u32 npid = open_file->pid;
-                        rc = CIFSSMBSetFileSize(xid, pTcon, attrs->ia_size,
-                                                nfid, npid, false);
-                        atomic_dec(&open_file->wrtPending);
-                        cFYI(1, ("SetFSize for attrs rc = %d", rc));
-                        if ((rc == -EINVAL) || (rc == -EOPNOTSUPP)) {
-                                unsigned int bytes_written;
-                                rc = CIFSSMBWrite(xid, pTcon,
-                                                  nfid, 0, attrs->ia_size,
-                                                  &bytes_written, NULL, NULL,
-                                                  1 /* 45 seconds */);
-                                cFYI(1, ("Wrt seteof rc %d", rc));
-                        }
-                } else
-                        rc = -EINVAL;
-                if (rc != 0) {
-                        /* Set file size by pathname rather than by handle
-                           either because no valid, writeable file handle for
-                           it was found or because there was an error setting
-                           it by handle */
-                        rc = CIFSSMBSetEOF(xid, pTcon, full_path,
-                                           attrs->ia_size, false,
-                                           cifs_sb->local_nls,
-                                           cifs_sb->mnt_cifs_flags &
-                                                CIFS_MOUNT_MAP_SPECIAL_CHR);
-                        cFYI(1, ("SetEOF by path (setattrs) rc = %d", rc));
-                        if ((rc == -EINVAL) || (rc == -EOPNOTSUPP)) {
-                                __u16 netfid;
-                                int oplock = 0;
-                                rc = SMBLegacyOpen(xid, pTcon, full_path,
-                                        FILE_OPEN, GENERIC_WRITE,
-                                        CREATE_NOT_DIR, &netfid, &oplock,
-                                        NULL, cifs_sb->local_nls,
-                                        cifs_sb->mnt_cifs_flags &
-                                                CIFS_MOUNT_MAP_SPECIAL_CHR);
-                                if (rc == 0) {
-                                        unsigned int bytes_written;
-                                        rc = CIFSSMBWrite(xid, pTcon,
-                                                        netfid, 0,
-                                                        attrs->ia_size,
-                                                        &bytes_written, NULL,
-                                                        NULL, 1 /* 45 sec */);
-                                        cFYI(1, ("wrt seteof rc %d", rc));
-                                        CIFSSMBClose(xid, pTcon, netfid);
-                                }
-                        }
-                }
-                /* Server is ok setting allocation size implicitly - no need
-                   to call:
-                CIFSSMBSetEOF(xid, pTcon, full_path, attrs->ia_size, true,
-                         cifs_sb->local_nls);
-                   */
-                if (rc == 0) {
-                        rc = cifs_vmtruncate(inode, attrs->ia_size);
-                        cifs_truncate_page(inode->i_mapping, inode->i_size);
-                } else
                        goto cifs_setattr_exit;
        }
diff --git a/fs/cifs/readdir.c b/fs/cifs/readdir.c
index 83f306954883..5f40ed3473f5 100644
--- a/fs/cifs/readdir.c
+++ b/fs/cifs/readdir.c
@@ -690,6 +690,7 @@ static int find_cifs_entry(const int xid, struct cifsTconInfo *pTcon,
                        else
                                cifs_buf_release(cifsFile->srch_inf.
                                                ntwrk_buf_start);
+                        cifsFile->srch_inf.ntwrk_buf_start = NULL;
                }
                rc = initiate_cifs_search(xid, file);
                if (rc) {
diff --git a/fs/coda/dir.c b/fs/coda/dir.c
index 3d2580e00a3e..c5916228243c 100644
--- a/fs/coda/dir.c
+++ b/fs/coda/dir.c
@@ -137,9 +137,11 @@ exit:
 }
-int coda_permission(struct inode *inode, int mask, struct nameidata *nd)
+int coda_permission(struct inode *inode, int mask)
 {
        int error = 0;
+        mask &= MAY_READ | MAY_WRITE | MAY_EXEC;
 
        if (!mask)
                return 0; 
diff --git a/fs/coda/inode.c b/fs/coda/inode.c
index 2f58dfc70083..830f51abb971 100644
--- a/fs/coda/inode.c
+++ b/fs/coda/inode.c
@@ -58,7 +58,7 @@ static void coda_destroy_inode(struct inode *inode)
        kmem_cache_free(coda_inode_cachep, ITOC(inode));
 }
-static void init_once(struct kmem_cache * cachep, void *foo)
+static void init_once(void *foo)
 {
        struct coda_inode_info *ei = (struct coda_inode_info *) foo;
diff --git a/fs/coda/pioctl.c b/fs/coda/pioctl.c
index c21a1f552a63..c51365422aa8 100644
--- a/fs/coda/pioctl.c
+++ b/fs/coda/pioctl.c
@@ -24,8 +24,7 @@
 #include <linux/coda_psdev.h>
 /* pioctl ops */
-static int coda_ioctl_permission(struct inode *inode, int mask,
+static int coda_ioctl_permission(struct inode *inode, int mask);
-                                 struct nameidata *nd);
 static int coda_pioctl(struct inode * inode, struct file * filp, 
                       unsigned int cmd, unsigned long user_data);
@@ -42,8 +41,7 @@ const struct file_operations coda_ioctl_operations = {
 };
 /* the coda pioctl inode ops */
-static int coda_ioctl_permission(struct inode *inode, int mask,
+static int coda_ioctl_permission(struct inode *inode, int mask)
-                                 struct nameidata *nd)
 {
        return 0;
 }
@@ -51,7 +49,7 @@ static int coda_ioctl_permission(struct inode *inode, int mask,
 static int coda_pioctl(struct inode * inode, struct file * filp, 
                       unsigned int cmd, unsigned long user_data)
 {
-        struct nameidata nd;
+        struct path path;
        int error;
        struct PioctlData data;
        struct inode *target_inode = NULL;
@@ -66,21 +64,21 @@ static int coda_pioctl(struct inode * inode, struct file * filp,
         * Look up the pathname. Note that the pathname is in 
         * user memory, and namei takes care of this
         */
-        if ( data.follow ) {
+        if (data.follow) {
-                error = user_path_walk(data.path, &nd);
+                error = user_path(data.path, &path);
        } else {
-                error = user_path_walk_link(data.path, &nd);
+                error = user_lpath(data.path, &path);
        }
                
        if ( error ) {
                return error;
        } else {
-                target_inode = nd.path.dentry->d_inode;
+                target_inode = path.dentry->d_inode;
        }
        
        /* return if it is not a Coda inode */
        if ( target_inode->i_sb != inode->i_sb ) {
-                path_put(&nd.path);
+                path_put(&path);
                return  -EINVAL;
        }
@@ -89,7 +87,7 @@ static int coda_pioctl(struct inode * inode, struct file * filp,
        error = venus_pioctl(inode->i_sb, &(cnp->c_fid), cmd, &data);
-        path_put(&nd.path);
+        path_put(&path);
        return error;
 }
diff --git a/fs/compat.c b/fs/compat.c
index 106eba28ec5a..c9d1472e65c5 100644
--- a/fs/compat.c
+++ b/fs/compat.c
@@ -234,18 +234,18 @@ static int put_compat_statfs(struct compat_statfs __user *ubuf, struct kstatfs *
 * The following statfs calls are copies of code from fs/open.c and
 * should be checked against those from time to time
 */
-asmlinkage long compat_sys_statfs(const char __user *path, struct compat_statfs __user *buf)
+asmlinkage long compat_sys_statfs(const char __user *pathname, struct compat_statfs __user *buf)
 {
-        struct nameidata nd;
+        struct path path;
        int error;
-        error = user_path_walk(path, &nd);
+        error = user_path(pathname, &path);
        if (!error) {
                struct kstatfs tmp;
-                error = vfs_statfs(nd.path.dentry, &tmp);
+                error = vfs_statfs(path.dentry, &tmp);
                if (!error)
                        error = put_compat_statfs(buf, &tmp);
-                path_put(&nd.path);
+                path_put(&path);
        }
        return error;
 }
@@ -299,21 +299,21 @@ static int put_compat_statfs64(struct compat_statfs64 __user *ubuf, struct kstat
        return 0;
 }
-asmlinkage long compat_sys_statfs64(const char __user *path, compat_size_t sz, struct compat_statfs64 __user *buf)
+asmlinkage long compat_sys_statfs64(const char __user *pathname, compat_size_t sz, struct compat_statfs64 __user *buf)
 {
-        struct nameidata nd;
+        struct path path;
        int error;
        if (sz != sizeof(*buf))
                return -EINVAL;
-        error = user_path_walk(path, &nd);
+        error = user_path(pathname, &path);
        if (!error) {
                struct kstatfs tmp;
-                error = vfs_statfs(nd.path.dentry, &tmp);
+                error = vfs_statfs(path.dentry, &tmp);
                if (!error)
                        error = put_compat_statfs64(buf, &tmp);
-                path_put(&nd.path);
+                path_put(&path);
        }
        return error;
 }
diff --git a/fs/dcache.c b/fs/dcache.c
index 3818d6ab76ca..f2584d22cb45 100644
--- a/fs/dcache.c
+++ b/fs/dcache.c
@@ -487,6 +487,7 @@ restart:
                                if (!cnt)
                                        break;
                        }
+                        cond_resched_lock(&dcache_lock);
                }
        }
        while (!list_empty(&tmp)) {
diff --git a/fs/direct-io.c b/fs/direct-io.c
index 9e81addbd6ea..9606ee848fd8 100644
--- a/fs/direct-io.c
+++ b/fs/direct-io.c
@@ -150,17 +150,11 @@ static int dio_refill_pages(struct dio *dio)
        int nr_pages;
        nr_pages = min(dio->total_pages - dio->curr_page, DIO_PAGES);
-        down_read(&current->mm->mmap_sem);
+        ret = get_user_pages_fast(
-        ret = get_user_pages(
-                current,                        /* Task for fault acounting */
-                current->mm,                    /* whose pages? */
                dio->curr_user_address,         /* Where from? */
                nr_pages,                       /* How many pages? */
                dio->rw == READ,                /* Write to memory? */
-                0,                              /* force (?) */
+                &dio->pages[0]);                /* Put results here */
-                &dio->pages[0],
-                NULL);                          /* vmas */
-        up_read(&current->mm->mmap_sem);
        if (ret < 0 && dio->blocks_available && (dio->rw & WRITE)) {
                struct page *page = ZERO_PAGE(0);
diff --git a/fs/ecryptfs/inode.c b/fs/ecryptfs/inode.c
index d755455e3bff..89209f00f9c7 100644
--- a/fs/ecryptfs/inode.c
+++ b/fs/ecryptfs/inode.c
@@ -465,7 +465,6 @@ static int ecryptfs_symlink(struct inode *dir, struct dentry *dentry,
        int rc;
        struct dentry *lower_dentry;
        struct dentry *lower_dir_dentry;
-        umode_t mode;
        char *encoded_symname;
        int encoded_symlen;
        struct ecryptfs_crypt_stat *crypt_stat = NULL;
@@ -473,7 +472,6 @@ static int ecryptfs_symlink(struct inode *dir, struct dentry *dentry,
        lower_dentry = ecryptfs_dentry_to_lower(dentry);
        dget(lower_dentry);
        lower_dir_dentry = lock_parent(lower_dentry);
-        mode = S_IALLUGO;
        encoded_symlen = ecryptfs_encode_filename(crypt_stat, symname,
                                                  strlen(symname),
                                                  &encoded_symname);
@@ -482,7 +480,7 @@ static int ecryptfs_symlink(struct inode *dir, struct dentry *dentry,
                goto out_lock;
        }
        rc = vfs_symlink(lower_dir_dentry->d_inode, lower_dentry,
-                         encoded_symname, mode);
+                         encoded_symname);
        kfree(encoded_symname);
        if (rc || !lower_dentry->d_inode)
                goto out_lock;
@@ -830,22 +828,9 @@ out:
 }
 static int
-ecryptfs_permission(struct inode *inode, int mask, struct nameidata *nd)
+ecryptfs_permission(struct inode *inode, int mask)
 {
-        int rc;
+        return inode_permission(ecryptfs_inode_to_lower(inode), mask);
-        if (nd) {
-                struct vfsmount *vfsmnt_save = nd->path.mnt;
-                struct dentry *dentry_save = nd->path.dentry;
-                nd->path.mnt = ecryptfs_dentry_to_lower_mnt(nd->path.dentry);
-                nd->path.dentry = ecryptfs_dentry_to_lower(nd->path.dentry);
-                rc = permission(ecryptfs_inode_to_lower(inode), mask, nd);
-                nd->path.mnt = vfsmnt_save;
-                nd->path.dentry = dentry_save;
-        } else
-                rc = permission(ecryptfs_inode_to_lower(inode), mask, NULL);
-        return rc;
 }
 /**
diff --git a/fs/ecryptfs/main.c b/fs/ecryptfs/main.c
index 6f403cfba14f..448dfd597b5f 100644
--- a/fs/ecryptfs/main.c
+++ b/fs/ecryptfs/main.c
@@ -578,7 +578,7 @@ static struct file_system_type ecryptfs_fs_type = {
 * Initializes the ecryptfs_inode_info_cache when it is created
 */
 static void
-inode_info_init_once(struct kmem_cache *cachep, void *vptr)
+inode_info_init_once(void *vptr)
 {
        struct ecryptfs_inode_info *ei = (struct ecryptfs_inode_info *)vptr;
@@ -589,7 +589,7 @@ static struct ecryptfs_cache_info {
        struct kmem_cache **cache;
        const char *name;
        size_t size;
-        void (*ctor)(struct kmem_cache *cache, void *obj);
+        void (*ctor)(void *obj);
 } ecryptfs_cache_infos[] = {
        {
                .cache = &ecryptfs_auth_tok_list_item_cache,
diff --git a/fs/efs/super.c b/fs/efs/super.c
index d733531b55e2..567b134fa1f1 100644
--- a/fs/efs/super.c
+++ b/fs/efs/super.c
@@ -70,7 +70,7 @@ static void efs_destroy_inode(struct inode *inode)
        kmem_cache_free(efs_inode_cachep, INODE_INFO(inode));
 }
-static void init_once(struct kmem_cache *cachep, void *foo)
+static void init_once(void *foo)
 {
        struct efs_inode_info *ei = (struct efs_inode_info *) foo;
diff --git a/fs/exec.c b/fs/exec.c
index 5e559013e303..9696bbf0f0b1 100644
--- a/fs/exec.c
+++ b/fs/exec.c
@@ -42,13 +42,13 @@
 #include <linux/module.h>
 #include <linux/namei.h>
 #include <linux/proc_fs.h>
-#include <linux/ptrace.h>
 #include <linux/mount.h>
 #include <linux/security.h>
 #include <linux/syscalls.h>
 #include <linux/tsacct_kern.h>
 #include <linux/cn_proc.h>
 #include <linux/audit.h>
+#include <linux/tracehook.h>
 #include <asm/uaccess.h>
 #include <asm/mmu_context.h>
@@ -106,11 +106,17 @@ static inline void put_binfmt(struct linux_binfmt * fmt)
 */
 asmlinkage long sys_uselib(const char __user * library)
 {
-        struct file * file;
+        struct file *file;
        struct nameidata nd;
-        int error;
+        char *tmp = getname(library);
+        int error = PTR_ERR(tmp);
-        error = __user_path_lookup_open(library, LOOKUP_FOLLOW, &nd, FMODE_READ|FMODE_EXEC);
+        if (!IS_ERR(tmp)) {
+                error = path_lookup_open(AT_FDCWD, tmp,
+                                         LOOKUP_FOLLOW, &nd,
+                                         FMODE_READ|FMODE_EXEC);
+                putname(tmp);
+        }
        if (error)
                goto out;
@@ -118,7 +124,11 @@ asmlinkage long sys_uselib(const char __user * library)
        if (!S_ISREG(nd.path.dentry->d_inode->i_mode))
                goto exit;
-        error = vfs_permission(&nd, MAY_READ | MAY_EXEC);
+        error = -EACCES;
+        if (nd.path.mnt->mnt_flags & MNT_NOEXEC)
+                goto exit;
+        error = vfs_permission(&nd, MAY_READ | MAY_EXEC | MAY_OPEN);
        if (error)
                goto exit;
@@ -656,38 +666,43 @@ EXPORT_SYMBOL(setup_arg_pages);
 struct file *open_exec(const char *name)
 {
        struct nameidata nd;
-        int err;
        struct file *file;
+        int err;
-        err = path_lookup_open(AT_FDCWD, name, LOOKUP_FOLLOW, &nd, FMODE_READ|FMODE_EXEC);
+        err = path_lookup_open(AT_FDCWD, name, LOOKUP_FOLLOW, &nd,
-        file = ERR_PTR(err);
+                                FMODE_READ|FMODE_EXEC);
+        if (err)
-        if (!err) {
+                goto out;
-                struct inode *inode = nd.path.dentry->d_inode;
-                file = ERR_PTR(-EACCES);
+        err = -EACCES;
-                if (S_ISREG(inode->i_mode)) {
+        if (!S_ISREG(nd.path.dentry->d_inode->i_mode))
-                        int err = vfs_permission(&nd, MAY_EXEC);
+                goto out_path_put;
-                        file = ERR_PTR(err);
-                        if (!err) {
+        if (nd.path.mnt->mnt_flags & MNT_NOEXEC)
-                                file = nameidata_to_filp(&nd,
+                goto out_path_put;
-                                                        O_RDONLY|O_LARGEFILE);
-                                if (!IS_ERR(file)) {
+        err = vfs_permission(&nd, MAY_EXEC | MAY_OPEN);
-                                        err = deny_write_access(file);
+        if (err)
-                                        if (err) {
+                goto out_path_put;
-                                                fput(file);
-                                                file = ERR_PTR(err);
+        file = nameidata_to_filp(&nd, O_RDONLY|O_LARGEFILE);
-                                        }
+        if (IS_ERR(file))
-                                }
+                return file;
-out:
-                                return file;
+        err = deny_write_access(file);
-                        }
+        if (err) {
-                }
+                fput(file);
-                release_open_intent(&nd);
+                goto out;
-                path_put(&nd.path);
        }
-        goto out;
-}
+        return file;
+ out_path_put:
+        release_open_intent(&nd);
+        path_put(&nd.path);
+ out:
+        return ERR_PTR(err);
+}
 EXPORT_SYMBOL(open_exec);
 int kernel_read(struct file *file, unsigned long offset,
@@ -1071,13 +1086,8 @@ EXPORT_SYMBOL(prepare_binprm);
 static int unsafe_exec(struct task_struct *p)
 {
-        int unsafe = 0;
+        int unsafe = tracehook_unsafe_exec(p);
-        if (p->ptrace & PT_PTRACED) {
-                if (p->ptrace & PT_PTRACE_CAP)
-                        unsafe |= LSM_UNSAFE_PTRACE_CAP;
-                else
-                        unsafe |= LSM_UNSAFE_PTRACE;
-        }
        if (atomic_read(&p->fs->count) > 1 ||
            atomic_read(&p->files->count) > 1 ||
            atomic_read(&p->sighand->count) > 1)
@@ -1214,6 +1224,7 @@ int search_binary_handler(struct linux_binprm *bprm,struct pt_regs *regs)
                        read_unlock(&binfmt_lock);
                        retval = fn(bprm, regs);
                        if (retval >= 0) {
+                                tracehook_report_exec(fmt, bprm, regs);
                                put_binfmt(fmt);
                                allow_write_access(bprm->file);
                                if (bprm->file)
diff --git a/fs/ext2/acl.c b/fs/ext2/acl.c
index e58669e1b87c..ae8c4f850b27 100644
--- a/fs/ext2/acl.c
+++ b/fs/ext2/acl.c
@@ -294,7 +294,7 @@ ext2_check_acl(struct inode *inode, int mask)
 }
 int
-ext2_permission(struct inode *inode, int mask, struct nameidata *nd)
+ext2_permission(struct inode *inode, int mask)
 {
        return generic_permission(inode, mask, ext2_check_acl);
 }
diff --git a/fs/ext2/acl.h b/fs/ext2/acl.h
index 0bde85bafe38..b42cf578554b 100644
--- a/fs/ext2/acl.h
+++ b/fs/ext2/acl.h
@@ -58,7 +58,7 @@ static inline int ext2_acl_count(size_t size)
 #define EXT2_ACL_NOT_CACHED ((void *)-1)
 /* acl.c */
-extern int ext2_permission (struct inode *, int, struct nameidata *);
+extern int ext2_permission (struct inode *, int);
 extern int ext2_acl_chmod (struct inode *);
 extern int ext2_init_acl (struct inode *, struct inode *);
diff --git a/fs/ext2/super.c b/fs/ext2/super.c
index 31308a3b0b8b..fd88c7b43e66 100644
--- a/fs/ext2/super.c
+++ b/fs/ext2/super.c
@@ -159,7 +159,7 @@ static void ext2_destroy_inode(struct inode *inode)
        kmem_cache_free(ext2_inode_cachep, EXT2_I(inode));
 }
-static void init_once(struct kmem_cache * cachep, void *foo)
+static void init_once(void *foo)
 {
        struct ext2_inode_info *ei = (struct ext2_inode_info *) foo;
diff --git a/fs/ext3/acl.c b/fs/ext3/acl.c
index a754d1848173..b60bb241880c 100644
--- a/fs/ext3/acl.c
+++ b/fs/ext3/acl.c
@@ -299,7 +299,7 @@ ext3_check_acl(struct inode *inode, int mask)
 }
 int
-ext3_permission(struct inode *inode, int mask, struct nameidata *nd)
+ext3_permission(struct inode *inode, int mask)
 {
        return generic_permission(inode, mask, ext3_check_acl);
 }
diff --git a/fs/ext3/acl.h b/fs/ext3/acl.h
index 0d1e6279cbfd..42da16b8cac0 100644
--- a/fs/ext3/acl.h
+++ b/fs/ext3/acl.h
@@ -58,7 +58,7 @@ static inline int ext3_acl_count(size_t size)
 #define EXT3_ACL_NOT_CACHED ((void *)-1)
 /* acl.c */
-extern int ext3_permission (struct inode *, int, struct nameidata *);
+extern int ext3_permission (struct inode *, int);
 extern int ext3_acl_chmod (struct inode *);
 extern int ext3_init_acl (handle_t *, struct inode *, struct inode *);
diff --git a/fs/ext3/super.c b/fs/ext3/super.c
index 615788c6843a..8ddced384674 100644
--- a/fs/ext3/super.c
+++ b/fs/ext3/super.c
@@ -472,7 +472,7 @@ static void ext3_destroy_inode(struct inode *inode)
        kmem_cache_free(ext3_inode_cachep, EXT3_I(inode));
 }
-static void init_once(struct kmem_cache * cachep, void *foo)
+static void init_once(void *foo)
 {
        struct ext3_inode_info *ei = (struct ext3_inode_info *) foo;
diff --git a/fs/ext4/acl.c b/fs/ext4/acl.c
index 3c8dab880d91..c7d04e165446 100644
--- a/fs/ext4/acl.c
+++ b/fs/ext4/acl.c
@@ -299,7 +299,7 @@ ext4_check_acl(struct inode *inode, int mask)
 }
 int
-ext4_permission(struct inode *inode, int mask, struct nameidata *nd)
+ext4_permission(struct inode *inode, int mask)
 {
        return generic_permission(inode, mask, ext4_check_acl);
 }
diff --git a/fs/ext4/acl.h b/fs/ext4/acl.h
index 26a5c1abf147..cd2b855a07d6 100644
--- a/fs/ext4/acl.h
+++ b/fs/ext4/acl.h
@@ -58,7 +58,7 @@ static inline int ext4_acl_count(size_t size)
 #define EXT4_ACL_NOT_CACHED ((void *)-1)
 /* acl.c */
-extern int ext4_permission (struct inode *, int, struct nameidata *);
+extern int ext4_permission (struct inode *, int);
 extern int ext4_acl_chmod (struct inode *);
 extern int ext4_init_acl (handle_t *, struct inode *, struct inode *);
diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index 1cb371dcd609..b5479b1dff14 100644
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -595,7 +595,7 @@ static void ext4_destroy_inode(struct inode *inode)
        kmem_cache_free(ext4_inode_cachep, EXT4_I(inode));
 }
-static void init_once(struct kmem_cache *cachep, void *foo)
+static void init_once(void *foo)
 {
        struct ext4_inode_info *ei = (struct ext4_inode_info *) foo;
diff --git a/fs/fat/cache.c b/fs/fat/cache.c
index 3a9ecac8d61f..3222f51c41cf 100644
--- a/fs/fat/cache.c
+++ b/fs/fat/cache.c
@@ -36,7 +36,7 @@ static inline int fat_max_cache(struct inode *inode)
 static struct kmem_cache *fat_cache_cachep;
-static void init_once(struct kmem_cache *cachep, void *foo)
+static void init_once(void *foo)
 {
        struct fat_cache *cache = (struct fat_cache *)foo;
diff --git a/fs/fat/file.c b/fs/fat/file.c
index c672df4036e9..8707a8cfa02c 100644
--- a/fs/fat/file.c
+++ b/fs/fat/file.c
@@ -15,6 +15,8 @@
 #include <linux/writeback.h>
 #include <linux/backing-dev.h>
 #include <linux/blkdev.h>
+#include <linux/fsnotify.h>
+#include <linux/security.h>
 int fat_generic_ioctl(struct inode *inode, struct file *filp,
                      unsigned int cmd, unsigned long arg)
@@ -64,6 +66,7 @@ int fat_generic_ioctl(struct inode *inode, struct file *filp,
                /* Equivalent to a chmod() */
                ia.ia_valid = ATTR_MODE | ATTR_CTIME;
+                ia.ia_ctime = current_fs_time(inode->i_sb);
                if (is_dir) {
                        ia.ia_mode = MSDOS_MKMODE(attr,
                                S_IRWXUGO & ~sbi->options.fs_dmask)
@@ -90,11 +93,21 @@ int fat_generic_ioctl(struct inode *inode, struct file *filp,
                        }
                }
+                /*
+                 * The security check is questionable...  We single
+                 * out the RO attribute for checking by the security
+                 * module, just because it maps to a file mode.
+                 */
+                err = security_inode_setattr(filp->f_path.dentry, &ia);
+                if (err)
+                        goto up;
                /* This MUST be done before doing anything irreversible... */
-                err = notify_change(filp->f_path.dentry, &ia);
+                err = fat_setattr(filp->f_path.dentry, &ia);
                if (err)
                        goto up;
+                fsnotify_change(filp->f_path.dentry, ia.ia_valid);
                if (sbi->options.sys_immutable) {
                        if (attr & ATTR_SYS)
                                inode->i_flags |= S_IMMUTABLE;
diff --git a/fs/fat/inode.c b/fs/fat/inode.c
index 23676f9d79ce..6d266d793e2c 100644
--- a/fs/fat/inode.c
+++ b/fs/fat/inode.c
@@ -498,7 +498,7 @@ static void fat_destroy_inode(struct inode *inode)
        kmem_cache_free(fat_inode_cachep, MSDOS_I(inode));
 }
-static void init_once(struct kmem_cache *cachep, void *foo)
+static void init_once(void *foo)
 {
        struct msdos_inode_info *ei = (struct msdos_inode_info *)foo;
diff --git a/fs/fcntl.c b/fs/fcntl.c
index 9679fcbdeaa0..61d625136813 100644
--- a/fs/fcntl.c
+++ b/fs/fcntl.c
@@ -64,11 +64,6 @@ static int locate_fd(unsigned int orig_start, int cloexec)
        struct fdtable *fdt;
        spin_lock(&files->file_lock);
-        error = -EINVAL;
-        if (orig_start >= current->signal->rlim[RLIMIT_NOFILE].rlim_cur)
-                goto out;
 repeat:
        fdt = files_fdtable(files);
        /*
@@ -83,10 +78,6 @@ repeat:
        if (start < fdt->max_fds)
                newfd = find_next_zero_bit(fdt->open_fds->fds_bits,
                                           fdt->max_fds, start);
-        
-        error = -EMFILE;
-        if (newfd >= current->signal->rlim[RLIMIT_NOFILE].rlim_cur)
-                goto out;
        error = expand_files(files, newfd);
        if (error < 0)
@@ -135,20 +126,20 @@ asmlinkage long sys_dup3(unsigned int oldfd, unsigned int newfd, int flags)
        if ((flags & ~O_CLOEXEC) != 0)
                return -EINVAL;
+        if (unlikely(oldfd == newfd))
+                return -EINVAL;
        spin_lock(&files->file_lock);
        if (!(file = fcheck(oldfd)))
                goto out_unlock;
-        err = newfd;
-        if (newfd == oldfd)
-                goto out_unlock;
-        err = -EBADF;
-        if (newfd >= current->signal->rlim[RLIMIT_NOFILE].rlim_cur)
-                goto out_unlock;
        get_file(file);                 /* We are now finished with oldfd */
        err = expand_files(files, newfd);
-        if (err < 0)
+        if (unlikely(err < 0)) {
+                if (err == -EMFILE)
+                        err = -EBADF;
                goto out_fput;
+        }
        /* To avoid races with open() and dup(), we will mark the fd as
         * in-use in the open-file bitmap throughout the entire dup2()
@@ -189,6 +180,14 @@ out_fput:
 asmlinkage long sys_dup2(unsigned int oldfd, unsigned int newfd)
 {
+        if (unlikely(newfd == oldfd)) { /* corner case */
+                struct files_struct *files = current->files;
+                rcu_read_lock();
+                if (!fcheck_files(files, oldfd))
+                        oldfd = -EBADF;
+                rcu_read_unlock();
+                return oldfd;
+        }
        return sys_dup3(oldfd, newfd, 0);
 }
@@ -321,6 +320,8 @@ static long do_fcntl(int fd, unsigned int cmd, unsigned long arg,
        switch (cmd) {
        case F_DUPFD:
        case F_DUPFD_CLOEXEC:
+                if (arg >= current->signal->rlim[RLIMIT_NOFILE].rlim_cur)
+                        break;
                get_file(filp);
                err = dupfd(filp, arg, cmd == F_DUPFD_CLOEXEC);
                break;
diff --git a/fs/fifo.c b/fs/fifo.c
index 9785e36f81e7..987bf9411495 100644
--- a/fs/fifo.c
+++ b/fs/fifo.c
@@ -57,7 +57,7 @@ static int fifo_open(struct inode *inode, struct file *filp)
         *  POSIX.1 says that O_NONBLOCK means return with the FIFO
         *  opened, even when there is no process writing the FIFO.
         */
-                filp->f_op = &read_fifo_fops;
+                filp->f_op = &read_pipefifo_fops;
                pipe->r_counter++;
                if (pipe->readers++ == 0)
                        wake_up_partner(inode);
@@ -86,7 +86,7 @@ static int fifo_open(struct inode *inode, struct file *filp)
                if ((filp->f_flags & O_NONBLOCK) && !pipe->readers)
                        goto err;
-                filp->f_op = &write_fifo_fops;
+                filp->f_op = &write_pipefifo_fops;
                pipe->w_counter++;
                if (!pipe->writers++)
                        wake_up_partner(inode);
@@ -105,7 +105,7 @@ static int fifo_open(struct inode *inode, struct file *filp)
         *  This implementation will NEVER block on a O_RDWR open, since
         *  the process can at least talk to itself.
         */
-                filp->f_op = &rdwr_fifo_fops;
+                filp->f_op = &rdwr_pipefifo_fops;
                pipe->readers++;
                pipe->writers++;
@@ -151,5 +151,5 @@ err_nocleanup:
 * depending on the access mode of the file...
 */
 const struct file_operations def_fifo_fops = {
-        .open           = fifo_open,    /* will set read or write pipe_fops */
+        .open           = fifo_open,    /* will set read_ or write_pipefifo_fops */
 };
diff --git a/fs/file.c b/fs/file.c
index 7b3887e054d0..d8773b19fe47 100644
--- a/fs/file.c
+++ b/fs/file.c
@@ -250,9 +250,18 @@ int expand_files(struct files_struct *files, int nr)
        struct fdtable *fdt;
        fdt = files_fdtable(files);
+        /*
+         * N.B. For clone tasks sharing a files structure, this test
+         * will limit the total number of files that can be opened.
+         */
+        if (nr >= current->signal->rlim[RLIMIT_NOFILE].rlim_cur)
+                return -EMFILE;
        /* Do we need to expand? */
        if (nr < fdt->max_fds)
                return 0;
        /* Can we expand? */
        if (nr >= sysctl_nr_open)
                return -EMFILE;
diff --git a/fs/file_table.c b/fs/file_table.c
index 83084225b4c3..f45a4493f9e7 100644
--- a/fs/file_table.c
+++ b/fs/file_table.c
@@ -120,7 +120,7 @@ struct file *get_empty_filp(void)
        tsk = current;
        INIT_LIST_HEAD(&f->f_u.fu_list);
-        atomic_set(&f->f_count, 1);
+        atomic_long_set(&f->f_count, 1);
        rwlock_init(&f->f_owner.lock);
        f->f_uid = tsk->fsuid;
        f->f_gid = tsk->fsgid;
@@ -219,7 +219,7 @@ EXPORT_SYMBOL(init_file);
 void fput(struct file *file)
 {
-        if (atomic_dec_and_test(&file->f_count))
+        if (atomic_long_dec_and_test(&file->f_count))
                __fput(file);
 }
@@ -294,7 +294,7 @@ struct file *fget(unsigned int fd)
        rcu_read_lock();
        file = fcheck_files(files, fd);
        if (file) {
-                if (!atomic_inc_not_zero(&file->f_count)) {
+                if (!atomic_long_inc_not_zero(&file->f_count)) {
                        /* File object ref couldn't be taken */
                        rcu_read_unlock();
                        return NULL;
@@ -326,7 +326,7 @@ struct file *fget_light(unsigned int fd, int *fput_needed)
                rcu_read_lock();
                file = fcheck_files(files, fd);
                if (file) {
-                        if (atomic_inc_not_zero(&file->f_count))
+                        if (atomic_long_inc_not_zero(&file->f_count))
                                *fput_needed = 1;
                        else
                                /* Didn't get the reference, someone's freed */
@@ -341,7 +341,7 @@ struct file *fget_light(unsigned int fd, int *fput_needed)
 void put_filp(struct file *file)
 {
-        if (atomic_dec_and_test(&file->f_count)) {
+        if (atomic_long_dec_and_test(&file->f_count)) {
                security_file_free(file);
                file_kill(file);
                file_free(file);
diff --git a/fs/fuse/dir.c b/fs/fuse/dir.c
index 51d0035ff07e..fd03330cadeb 100644
--- a/fs/fuse/dir.c
+++ b/fs/fuse/dir.c
@@ -898,7 +898,7 @@ static int fuse_access(struct inode *inode, int mask)
                return PTR_ERR(req);
        memset(&inarg, 0, sizeof(inarg));
-        inarg.mask = mask;
+        inarg.mask = mask & (MAY_READ | MAY_WRITE | MAY_EXEC);
        req->in.h.opcode = FUSE_ACCESS;
        req->in.h.nodeid = get_node_id(inode);
        req->in.numargs = 1;
@@ -927,7 +927,7 @@ static int fuse_access(struct inode *inode, int mask)
 * access request is sent.  Execute permission is still checked
 * locally based on file mode.
 */
-static int fuse_permission(struct inode *inode, int mask, struct nameidata *nd)
+static int fuse_permission(struct inode *inode, int mask)
 {
        struct fuse_conn *fc = get_fuse_conn(inode);
        bool refreshed = false;
@@ -962,7 +962,7 @@ static int fuse_permission(struct inode *inode, int mask, struct nameidata *nd)
                   exist.  So if permissions are revoked this won't be
                   noticed immediately, only after the attribute
                   timeout has expired */
-        } else if (nd && (nd->flags & (LOOKUP_ACCESS | LOOKUP_CHDIR))) {
+        } else if (mask & MAY_ACCESS) {
                err = fuse_access(inode, mask);
        } else if ((mask & MAY_EXEC) && S_ISREG(inode->i_mode)) {
                if (!(inode->i_mode & S_IXUGO)) {
diff --git a/fs/fuse/file.c b/fs/fuse/file.c
index 67ff2c6a8f63..2bada6bbc317 100644
--- a/fs/fuse/file.c
+++ b/fs/fuse/file.c
@@ -893,7 +893,7 @@ static ssize_t fuse_file_aio_write(struct kiocb *iocb, const struct iovec *iov,
        if (count == 0)
                goto out;
-        err = remove_suid(file->f_path.dentry);
+        err = file_remove_suid(file);
        if (err)
                goto out;
diff --git a/fs/fuse/inode.c b/fs/fuse/inode.c
index 7d2f7d6e22e2..d2249f174e20 100644
--- a/fs/fuse/inode.c
+++ b/fs/fuse/inode.c
@@ -956,7 +956,7 @@ static inline void unregister_fuseblk(void)
 }
 #endif
-static void fuse_inode_init_once(struct kmem_cache *cachep, void *foo)
+static void fuse_inode_init_once(void *foo)
 {
        struct inode * inode = foo;
diff --git a/fs/gfs2/inode.c b/fs/gfs2/inode.c
index 6da0ab355b8a..8b0806a32948 100644
--- a/fs/gfs2/inode.c
+++ b/fs/gfs2/inode.c
@@ -448,7 +448,7 @@ struct inode *gfs2_lookup_simple(struct inode *dip, const char *name)
        struct qstr qstr;
        struct inode *inode;
        gfs2_str2qstr(&qstr, name);
-        inode = gfs2_lookupi(dip, &qstr, 1, NULL);
+        inode = gfs2_lookupi(dip, &qstr, 1);
        /* gfs2_lookupi has inconsistent callers: vfs
         * related routines expect NULL for no entry found,
         * gfs2_lookup_simple callers expect ENOENT
@@ -477,7 +477,7 @@ struct inode *gfs2_lookup_simple(struct inode *dip, const char *name)
 */
 struct inode *gfs2_lookupi(struct inode *dir, const struct qstr *name,
-                           int is_root, struct nameidata *nd)
+                           int is_root)
 {
        struct super_block *sb = dir->i_sb;
        struct gfs2_inode *dip = GFS2_I(dir);
@@ -1173,7 +1173,7 @@ int gfs2_ok_to_move(struct gfs2_inode *this, struct gfs2_inode *to)
                        break;
                }
-                tmp = gfs2_lookupi(dir, &dotdot, 1, NULL);
+                tmp = gfs2_lookupi(dir, &dotdot, 1);
                if (IS_ERR(tmp)) {
                        error = PTR_ERR(tmp);
                        break;
diff --git a/fs/gfs2/inode.h b/fs/gfs2/inode.h
index 6074c2506f75..58f9607d6a86 100644
--- a/fs/gfs2/inode.h
+++ b/fs/gfs2/inode.h
@@ -83,7 +83,7 @@ int gfs2_inode_refresh(struct gfs2_inode *ip);
 int gfs2_dinode_dealloc(struct gfs2_inode *inode);
 int gfs2_change_nlink(struct gfs2_inode *ip, int diff);
 struct inode *gfs2_lookupi(struct inode *dir, const struct qstr *name,
-                           int is_root, struct nameidata *nd);
+                           int is_root);
 struct inode *gfs2_createi(struct gfs2_holder *ghs, const struct qstr *name,
                           unsigned int mode, dev_t dev);
 int gfs2_rmdiri(struct gfs2_inode *dip, const struct qstr *name,
diff --git a/fs/gfs2/main.c b/fs/gfs2/main.c
index bcc668d0fadd..bb2cc303ac29 100644
--- a/fs/gfs2/main.c
+++ b/fs/gfs2/main.c
@@ -24,7 +24,7 @@
 #include "util.h"
 #include "glock.h"
-static void gfs2_init_inode_once(struct kmem_cache *cachep, void *foo)
+static void gfs2_init_inode_once(void *foo)
 {
        struct gfs2_inode *ip = foo;
@@ -33,7 +33,7 @@ static void gfs2_init_inode_once(struct kmem_cache *cachep, void *foo)
        ip->i_alloc = NULL;
 }
-static void gfs2_init_glock_once(struct kmem_cache *cachep, void *foo)
+static void gfs2_init_glock_once(void *foo)
 {
        struct gfs2_glock *gl = foo;
diff --git a/fs/gfs2/ops_export.c b/fs/gfs2/ops_export.c
index 990d9f4bc463..9cda8536530c 100644
--- a/fs/gfs2/ops_export.c
+++ b/fs/gfs2/ops_export.c
@@ -134,7 +134,7 @@ static struct dentry *gfs2_get_parent(struct dentry *child)
        struct dentry *dentry;
        gfs2_str2qstr(&dotdot, "..");
-        inode = gfs2_lookupi(child->d_inode, &dotdot, 1, NULL);
+        inode = gfs2_lookupi(child->d_inode, &dotdot, 1);
        if (!inode)
                return ERR_PTR(-ENOENT);
diff --git a/fs/gfs2/ops_inode.c b/fs/gfs2/ops_inode.c
index 1e252dfc5294..e2c62f73a778 100644
--- a/fs/gfs2/ops_inode.c
+++ b/fs/gfs2/ops_inode.c
@@ -74,7 +74,7 @@ static int gfs2_create(struct inode *dir, struct dentry *dentry,
                        return PTR_ERR(inode);
                }
-                inode = gfs2_lookupi(dir, &dentry->d_name, 0, nd);
+                inode = gfs2_lookupi(dir, &dentry->d_name, 0);
                if (inode) {
                        if (!IS_ERR(inode)) {
                                gfs2_holder_uninit(ghs);
@@ -109,7 +109,7 @@ static struct dentry *gfs2_lookup(struct inode *dir, struct dentry *dentry,
        dentry->d_op = &gfs2_dops;
-        inode = gfs2_lookupi(dir, &dentry->d_name, 0, nd);
+        inode = gfs2_lookupi(dir, &dentry->d_name, 0);
        if (inode && IS_ERR(inode))
                return ERR_CAST(inode);
@@ -915,12 +915,6 @@ int gfs2_permission(struct inode *inode, int mask)
        return error;
 }
-static int gfs2_iop_permission(struct inode *inode, int mask,
-                               struct nameidata *nd)
-{
-        return gfs2_permission(inode, mask);
-}
 static int setattr_size(struct inode *inode, struct iattr *attr)
 {
        struct gfs2_inode *ip = GFS2_I(inode);
@@ -1150,7 +1144,7 @@ static int gfs2_removexattr(struct dentry *dentry, const char *name)
 }
 const struct inode_operations gfs2_file_iops = {
-        .permission = gfs2_iop_permission,
+        .permission = gfs2_permission,
        .setattr = gfs2_setattr,
        .getattr = gfs2_getattr,
        .setxattr = gfs2_setxattr,
@@ -1169,7 +1163,7 @@ const struct inode_operations gfs2_dir_iops = {
        .rmdir = gfs2_rmdir,
        .mknod = gfs2_mknod,
        .rename = gfs2_rename,
-        .permission = gfs2_iop_permission,
+        .permission = gfs2_permission,
        .setattr = gfs2_setattr,
        .getattr = gfs2_getattr,
        .setxattr = gfs2_setxattr,
@@ -1181,7 +1175,7 @@ const struct inode_operations gfs2_dir_iops = {
 const struct inode_operations gfs2_symlink_iops = {
        .readlink = gfs2_readlink,
        .follow_link = gfs2_follow_link,
-        .permission = gfs2_iop_permission,
+        .permission = gfs2_permission,
        .setattr = gfs2_setattr,
        .getattr = gfs2_getattr,
        .setxattr = gfs2_setxattr,
diff --git a/fs/gfs2/super.c b/fs/gfs2/super.c
index 63a8a902d9db..ca831991cbc2 100644
--- a/fs/gfs2/super.c
+++ b/fs/gfs2/super.c
@@ -389,7 +389,7 @@ int gfs2_jindex_hold(struct gfs2_sbd *sdp, struct gfs2_holder *ji_gh)
                        break;
                INIT_LIST_HEAD(&jd->extent_list);
-                jd->jd_inode = gfs2_lookupi(sdp->sd_jindex, &name, 1, NULL);
+                jd->jd_inode = gfs2_lookupi(sdp->sd_jindex, &name, 1);
                if (!jd->jd_inode || IS_ERR(jd->jd_inode)) {
                        if (!jd->jd_inode)
                                error = -ENOENT;
diff --git a/fs/hfs/inode.c b/fs/hfs/inode.c
index dc4ec640e875..7e19835efa2e 100644
--- a/fs/hfs/inode.c
+++ b/fs/hfs/inode.c
@@ -511,8 +511,7 @@ void hfs_clear_inode(struct inode *inode)
        }
 }
-static int hfs_permission(struct inode *inode, int mask,
+static int hfs_permission(struct inode *inode, int mask)
-                          struct nameidata *nd)
 {
        if (S_ISREG(inode->i_mode) && mask & MAY_EXEC)
                return 0;
@@ -523,8 +522,6 @@ static int hfs_file_open(struct inode *inode, struct file *file)
 {
        if (HFS_IS_RSRC(inode))
                inode = HFS_I(inode)->rsrc_inode;
-        if (atomic_read(&file->f_count) != 1)
-                return 0;
        atomic_inc(&HFS_I(inode)->opencnt);
        return 0;
 }
@@ -535,8 +532,6 @@ static int hfs_file_release(struct inode *inode, struct file *file)
        if (HFS_IS_RSRC(inode))
                inode = HFS_I(inode)->rsrc_inode;
-        if (atomic_read(&file->f_count) != 0)
-                return 0;
        if (atomic_dec_and_test(&HFS_I(inode)->opencnt)) {
                mutex_lock(&inode->i_mutex);
                hfs_file_truncate(inode);
diff --git a/fs/hfs/super.c b/fs/hfs/super.c
index ac2ec5ef66e4..4abb1047c689 100644
--- a/fs/hfs/super.c
+++ b/fs/hfs/super.c
@@ -432,7 +432,7 @@ static struct file_system_type hfs_fs_type = {
        .fs_flags       = FS_REQUIRES_DEV,
 };
-static void hfs_init_once(struct kmem_cache *cachep, void *p)
+static void hfs_init_once(void *p)
 {
        struct hfs_inode_info *i = p;
diff --git a/fs/hfsplus/inode.c b/fs/hfsplus/inode.c
index cc3b5e24339b..b085d64a2b67 100644
--- a/fs/hfsplus/inode.c
+++ b/fs/hfsplus/inode.c
@@ -238,7 +238,7 @@ static void hfsplus_set_perms(struct inode *inode, struct hfsplus_perm *perms)
        perms->dev = cpu_to_be32(HFSPLUS_I(inode).dev);
 }
-static int hfsplus_permission(struct inode *inode, int mask, struct nameidata *nd)
+static int hfsplus_permission(struct inode *inode, int mask)
 {
        /* MAY_EXEC is also used for lookup, if no x bit is set allow lookup,
         * open_exec has the same test, so it's still not executable, if a x bit
@@ -254,8 +254,6 @@ static int hfsplus_file_open(struct inode *inode, struct file *file)
 {
        if (HFSPLUS_IS_RSRC(inode))
                inode = HFSPLUS_I(inode).rsrc_inode;
-        if (atomic_read(&file->f_count) != 1)
-                return 0;
        atomic_inc(&HFSPLUS_I(inode).opencnt);
        return 0;
 }
@@ -266,8 +264,6 @@ static int hfsplus_file_release(struct inode *inode, struct file *file)
        if (HFSPLUS_IS_RSRC(inode))
                inode = HFSPLUS_I(inode).rsrc_inode;
-        if (atomic_read(&file->f_count) != 0)
-                return 0;
        if (atomic_dec_and_test(&HFSPLUS_I(inode).opencnt)) {
                mutex_lock(&inode->i_mutex);
                hfsplus_file_truncate(inode);
diff --git a/fs/hfsplus/super.c b/fs/hfsplus/super.c
index 3859118531c7..e834e578c93f 100644
--- a/fs/hfsplus/super.c
+++ b/fs/hfsplus/super.c
@@ -485,7 +485,7 @@ static struct file_system_type hfsplus_fs_type = {
        .fs_flags       = FS_REQUIRES_DEV,
 };
-static void hfsplus_init_once(struct kmem_cache *cachep, void *p)
+static void hfsplus_init_once(void *p)
 {
        struct hfsplus_inode_info *i = p;
diff --git a/fs/hostfs/hostfs_kern.c b/fs/hostfs/hostfs_kern.c
index 5222345ddccf..d6ecabf4d231 100644
--- a/fs/hostfs/hostfs_kern.c
+++ b/fs/hostfs/hostfs_kern.c
@@ -822,7 +822,7 @@ int hostfs_rename(struct inode *from_ino, struct dentry *from,
        return err;
 }
-int hostfs_permission(struct inode *ino, int desired, struct nameidata *nd)
+int hostfs_permission(struct inode *ino, int desired)
 {
        char *name;
        int r = 0, w = 0, x = 0, err;
diff --git a/fs/hpfs/namei.c b/fs/hpfs/namei.c
index d256559b4104..d9c59a775449 100644
--- a/fs/hpfs/namei.c
+++ b/fs/hpfs/namei.c
@@ -415,7 +415,7 @@ again:
                d_drop(dentry);
                spin_lock(&dentry->d_lock);
                if (atomic_read(&dentry->d_count) > 1 ||
-                    permission(inode, MAY_WRITE, NULL) ||
+                    generic_permission(inode, MAY_WRITE, NULL) ||
                    !S_ISREG(inode->i_mode) ||
                    get_write_access(inode)) {
                        spin_unlock(&dentry->d_lock);
diff --git a/fs/hpfs/super.c b/fs/hpfs/super.c
index f63a699ec659..b8ae9c90ada0 100644
--- a/fs/hpfs/super.c
+++ b/fs/hpfs/super.c
@@ -173,7 +173,7 @@ static void hpfs_destroy_inode(struct inode *inode)
        kmem_cache_free(hpfs_inode_cachep, hpfs_i(inode));
 }
-static void init_once(struct kmem_cache *cachep, void *foo)
+static void init_once(void *foo)
 {
        struct hpfs_inode_info *ei = (struct hpfs_inode_info *) foo;
diff --git a/fs/hppfs/hppfs.c b/fs/hppfs/hppfs.c
index 65077aa90f0a..2b3d1828db99 100644
--- a/fs/hppfs/hppfs.c
+++ b/fs/hppfs/hppfs.c
@@ -655,20 +655,13 @@ static void *hppfs_follow_link(struct dentry *dentry, struct nameidata *nd)
        return proc_dentry->d_inode->i_op->follow_link(proc_dentry, nd);
 }
-int hppfs_permission(struct inode *inode, int mask, struct nameidata *nd)
-{
-        return generic_permission(inode, mask, NULL);
-}
 static const struct inode_operations hppfs_dir_iops = {
        .lookup         = hppfs_lookup,
-        .permission     = hppfs_permission,
 };
 static const struct inode_operations hppfs_link_iops = {
        .readlink       = hppfs_readlink,
        .follow_link    = hppfs_follow_link,
-        .permission     = hppfs_permission,
 };
 static struct inode *get_inode(struct super_block *sb, struct dentry *dentry)
diff --git a/fs/hugetlbfs/inode.c b/fs/hugetlbfs/inode.c
index dbd01d262ca4..3f58923fb39b 100644
--- a/fs/hugetlbfs/inode.c
+++ b/fs/hugetlbfs/inode.c
@@ -705,7 +705,7 @@ static const struct address_space_operations hugetlbfs_aops = {
 };
-static void init_once(struct kmem_cache *cachep, void *foo)
+static void init_once(void *foo)
 {
        struct hugetlbfs_inode_info *ei = (struct hugetlbfs_inode_info *)foo;
diff --git a/fs/inode.c b/fs/inode.c
index c36d9480335c..b6726f644530 100644
--- a/fs/inode.c
+++ b/fs/inode.c
@@ -209,7 +209,7 @@ void inode_init_once(struct inode *inode)
        INIT_LIST_HEAD(&inode->i_dentry);
        INIT_LIST_HEAD(&inode->i_devices);
        INIT_RADIX_TREE(&inode->i_data.page_tree, GFP_ATOMIC);
-        rwlock_init(&inode->i_data.tree_lock);
+        spin_lock_init(&inode->i_data.tree_lock);
        spin_lock_init(&inode->i_data.i_mmap_lock);
        INIT_LIST_HEAD(&inode->i_data.private_list);
        spin_lock_init(&inode->i_data.private_lock);
@@ -224,7 +224,7 @@ void inode_init_once(struct inode *inode)
 EXPORT_SYMBOL(inode_init_once);
-static void init_once(struct kmem_cache * cachep, void *foo)
+static void init_once(void *foo)
 {
        struct inode * inode = (struct inode *) foo;
diff --git a/fs/inotify_user.c b/fs/inotify_user.c
index fe79c25d95dc..60249429a253 100644
--- a/fs/inotify_user.c
+++ b/fs/inotify_user.c
@@ -354,20 +354,20 @@ static void inotify_dev_event_dequeue(struct inotify_device *dev)
 }
 /*
- * find_inode - resolve a user-given path to a specific inode and return a nd
+ * find_inode - resolve a user-given path to a specific inode
 */
-static int find_inode(const char __user *dirname, struct nameidata *nd,
+static int find_inode(const char __user *dirname, struct path *path,
                      unsigned flags)
 {
        int error;
-        error = __user_walk(dirname, flags, nd);
+        error = user_path_at(AT_FDCWD, dirname, flags, path);
        if (error)
                return error;
        /* you can only watch an inode if you have read permissions on it */
-        error = vfs_permission(nd, MAY_READ);
+        error = inode_permission(path->dentry->d_inode, MAY_READ);
        if (error)
-                path_put(&nd->path);
+                path_put(path);
        return error;
 }
@@ -650,11 +650,11 @@ asmlinkage long sys_inotify_init(void)
        return sys_inotify_init1(0);
 }
-asmlinkage long sys_inotify_add_watch(int fd, const char __user *path, u32 mask)
+asmlinkage long sys_inotify_add_watch(int fd, const char __user *pathname, u32 mask)
 {
        struct inode *inode;
        struct inotify_device *dev;
-        struct nameidata nd;
+        struct path path;
        struct file *filp;
        int ret, fput_needed;
        unsigned flags = 0;
@@ -674,12 +674,12 @@ asmlinkage long sys_inotify_add_watch(int fd, const char __user *path, u32 mask)
        if (mask & IN_ONLYDIR)
                flags |= LOOKUP_DIRECTORY;
-        ret = find_inode(path, &nd, flags);
+        ret = find_inode(pathname, &path, flags);
        if (unlikely(ret))
                goto fput_and_out;
-        /* inode held in place by reference to nd; dev by fget on fd */
+        /* inode held in place by reference to path; dev by fget on fd */
-        inode = nd.path.dentry->d_inode;
+        inode = path.dentry->d_inode;
        dev = filp->private_data;
        mutex_lock(&dev->up_mutex);
@@ -688,7 +688,7 @@ asmlinkage long sys_inotify_add_watch(int fd, const char __user *path, u32 mask)
                ret = create_watch(dev, inode, mask);
        mutex_unlock(&dev->up_mutex);
-        path_put(&nd.path);
+        path_put(&path);
 fput_and_out:
        fput_light(filp, fput_needed);
        return ret;
diff --git a/fs/isofs/inode.c b/fs/isofs/inode.c
index 044a254d526b..26948a6033b6 100644
--- a/fs/isofs/inode.c
+++ b/fs/isofs/inode.c
@@ -73,7 +73,7 @@ static void isofs_destroy_inode(struct inode *inode)
        kmem_cache_free(isofs_inode_cachep, ISOFS_I(inode));
 }
-static void init_once(struct kmem_cache *cachep, void *foo)
+static void init_once(void *foo)
 {
        struct iso_inode_info *ei = foo;
diff --git a/fs/jffs2/acl.c b/fs/jffs2/acl.c
index 4c80404a9aba..d98713777a1b 100644
--- a/fs/jffs2/acl.c
+++ b/fs/jffs2/acl.c
@@ -314,7 +314,7 @@ static int jffs2_check_acl(struct inode *inode, int mask)
        return -EAGAIN;
 }
-int jffs2_permission(struct inode *inode, int mask, struct nameidata *nd)
+int jffs2_permission(struct inode *inode, int mask)
 {
        return generic_permission(inode, mask, jffs2_check_acl);
 }
diff --git a/fs/jffs2/acl.h b/fs/jffs2/acl.h
index 0bb7f003fd80..8ca058aed384 100644
--- a/fs/jffs2/acl.h
+++ b/fs/jffs2/acl.h
@@ -28,7 +28,7 @@ struct jffs2_acl_header {
 #define JFFS2_ACL_NOT_CACHED ((void *)-1)
-extern int jffs2_permission(struct inode *, int, struct nameidata *);
+extern int jffs2_permission(struct inode *, int);
 extern int jffs2_acl_chmod(struct inode *);
 extern int jffs2_init_acl_pre(struct inode *, struct inode *, int *);
 extern int jffs2_init_acl_post(struct inode *);
diff --git a/fs/jffs2/dir.c b/fs/jffs2/dir.c
index c0c141f6fde1..cd219ef55254 100644
--- a/fs/jffs2/dir.c
+++ b/fs/jffs2/dir.c
@@ -38,7 +38,7 @@ const struct file_operations jffs2_dir_operations =
 {
        .read =         generic_read_dir,
        .readdir =      jffs2_readdir,
-        .ioctl =        jffs2_ioctl,
+        .unlocked_ioctl=jffs2_ioctl,
        .fsync =        jffs2_fsync
 };
diff --git a/fs/jffs2/file.c b/fs/jffs2/file.c
index 5e920343b2c5..5a98aa87c853 100644
--- a/fs/jffs2/file.c
+++ b/fs/jffs2/file.c
@@ -46,7 +46,7 @@ const struct file_operations jffs2_file_operations =
        .aio_read =     generic_file_aio_read,
        .write =        do_sync_write,
        .aio_write =    generic_file_aio_write,
-        .ioctl =        jffs2_ioctl,
+        .unlocked_ioctl=jffs2_ioctl,
        .mmap =         generic_file_readonly_mmap,
        .fsync =        jffs2_fsync,
        .splice_read =  generic_file_splice_read,
diff --git a/fs/jffs2/ioctl.c b/fs/jffs2/ioctl.c
index e2177210f621..9d41f43e47bb 100644
--- a/fs/jffs2/ioctl.c
+++ b/fs/jffs2/ioctl.c
@@ -12,8 +12,7 @@
 #include <linux/fs.h>
 #include "nodelist.h"
-int jffs2_ioctl(struct inode *inode, struct file *filp, unsigned int cmd,
+long jffs2_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
-                unsigned long arg)
 {
        /* Later, this will provide for lsattr.jffs2 and chattr.jffs2, which
           will include compression support etc. */
diff --git a/fs/jffs2/os-linux.h b/fs/jffs2/os-linux.h
index 2cc866cf134f..5e194a5c8e29 100644
--- a/fs/jffs2/os-linux.h
+++ b/fs/jffs2/os-linux.h
@@ -167,7 +167,7 @@ int jffs2_fsync(struct file *, struct dentry *, int);
 int jffs2_do_readpage_unlock (struct inode *inode, struct page *pg);
 /* ioctl.c */
-int jffs2_ioctl(struct inode *, struct file *, unsigned int, unsigned long);
+long jffs2_ioctl(struct file *, unsigned int, unsigned long);
 /* symlink.c */
 extern const struct inode_operations jffs2_symlink_inode_operations;
diff --git a/fs/jffs2/super.c b/fs/jffs2/super.c
index 7da69eae49e4..efd401257ed9 100644
--- a/fs/jffs2/super.c
+++ b/fs/jffs2/super.c
@@ -44,7 +44,7 @@ static void jffs2_destroy_inode(struct inode *inode)
        kmem_cache_free(jffs2_inode_cachep, JFFS2_INODE_INFO(inode));
 }
-static void jffs2_i_init_once(struct kmem_cache *cachep, void *foo)
+static void jffs2_i_init_once(void *foo)
 {
        struct jffs2_inode_info *f = foo;
diff --git a/fs/jfs/acl.c b/fs/jfs/acl.c
index 4d84bdc88299..d3e5c33665de 100644
--- a/fs/jfs/acl.c
+++ b/fs/jfs/acl.c
@@ -140,7 +140,7 @@ static int jfs_check_acl(struct inode *inode, int mask)
        return -EAGAIN;
 }
-int jfs_permission(struct inode *inode, int mask, struct nameidata *nd)
+int jfs_permission(struct inode *inode, int mask)
 {
        return generic_permission(inode, mask, jfs_check_acl);
 }
diff --git a/fs/jfs/jfs_acl.h b/fs/jfs/jfs_acl.h
index 455fa4292045..88475f10a389 100644
--- a/fs/jfs/jfs_acl.h
+++ b/fs/jfs/jfs_acl.h
@@ -20,7 +20,7 @@
 #ifdef CONFIG_JFS_POSIX_ACL
-int jfs_permission(struct inode *, int, struct nameidata *);
+int jfs_permission(struct inode *, int);
 int jfs_init_acl(tid_t, struct inode *, struct inode *);
 int jfs_setattr(struct dentry *, struct iattr *);
diff --git a/fs/jfs/jfs_metapage.c b/fs/jfs/jfs_metapage.c
index 854ff0ec574f..c350057087dd 100644
--- a/fs/jfs/jfs_metapage.c
+++ b/fs/jfs/jfs_metapage.c
@@ -182,7 +182,7 @@ static inline void remove_metapage(struct page *page, struct metapage *mp)
 #endif
-static void init_once(struct kmem_cache *cachep, void *foo)
+static void init_once(void *foo)
 {
        struct metapage *mp = (struct metapage *)foo;
diff --git a/fs/jfs/super.c b/fs/jfs/super.c
index 359c091d8965..3630718be395 100644
--- a/fs/jfs/super.c
+++ b/fs/jfs/super.c
@@ -760,7 +760,7 @@ static struct file_system_type jfs_fs_type = {
        .fs_flags       = FS_REQUIRES_DEV,
 };
-static void init_once(struct kmem_cache *cachep, void *foo)
+static void init_once(void *foo)
 {
        struct jfs_inode_info *jfs_ip = (struct jfs_inode_info *) foo;
diff --git a/fs/locks.c b/fs/locks.c
index 01490300f7cb..5eb259e3cd38 100644
--- a/fs/locks.c
+++ b/fs/locks.c
@@ -201,7 +201,7 @@ EXPORT_SYMBOL(locks_init_lock);
 * Initialises the fields of the file lock which are invariant for
 * free file_locks.
 */
-static void init_once(struct kmem_cache *cache, void *foo)
+static void init_once(void *foo)
 {
        struct file_lock *lock = (struct file_lock *) foo;
diff --git a/fs/minix/inode.c b/fs/minix/inode.c
index 523d73713418..d1d1eb84679d 100644
--- a/fs/minix/inode.c
+++ b/fs/minix/inode.c
@@ -68,7 +68,7 @@ static void minix_destroy_inode(struct inode *inode)
        kmem_cache_free(minix_inode_cachep, minix_i(inode));
 }
-static void init_once(struct kmem_cache * cachep, void *foo)
+static void init_once(void *foo)
 {
        struct minix_inode_info *ei = (struct minix_inode_info *) foo;
diff --git a/fs/namei.c b/fs/namei.c
index 01e67dddcc3d..a7b0a0b80128 100644
--- a/fs/namei.c
+++ b/fs/namei.c
@@ -31,7 +31,6 @@
 #include <linux/file.h>
 #include <linux/fcntl.h>
 #include <linux/device_cgroup.h>
-#include <asm/namei.h>
 #include <asm/uaccess.h>
 #define ACC_MODE(x) ("\000\004\002\006"[(x)&O_ACCMODE])
@@ -185,6 +184,8 @@ int generic_permission(struct inode *inode, int mask,
 {
        umode_t                 mode = inode->i_mode;
+        mask &= MAY_READ | MAY_WRITE | MAY_EXEC;
        if (current->fsuid == inode->i_uid)
                mode >>= 6;
        else {
@@ -203,7 +204,7 @@ int generic_permission(struct inode *inode, int mask,
        /*
         * If the DACs are ok we don't need any capability check.
         */
-        if (((mode & mask & (MAY_READ|MAY_WRITE|MAY_EXEC)) == mask))
+        if ((mask & ~mode) == 0)
                return 0;
 check_capabilities:
@@ -226,13 +227,9 @@ int generic_permission(struct inode *inode, int mask,
        return -EACCES;
 }
-int permission(struct inode *inode, int mask, struct nameidata *nd)
+int inode_permission(struct inode *inode, int mask)
 {
-        int retval, submask;
+        int retval;
-        struct vfsmount *mnt = NULL;
-        if (nd)
-                mnt = nd->path.mnt;
        if (mask & MAY_WRITE) {
                umode_t mode = inode->i_mode;
@@ -251,19 +248,9 @@ int permission(struct inode *inode, int mask, struct nameidata *nd)
                        return -EACCES;
        }
-        if ((mask & MAY_EXEC) && S_ISREG(inode->i_mode)) {
-                /*
-                 * MAY_EXEC on regular files is denied if the fs is mounted
-                 * with the "noexec" flag.
-                 */
-                if (mnt && (mnt->mnt_flags & MNT_NOEXEC))
-                        return -EACCES;
-        }
        /* Ordinary permission routines do not understand MAY_APPEND. */
-        submask = mask & ~MAY_APPEND;
        if (inode->i_op && inode->i_op->permission) {
-                retval = inode->i_op->permission(inode, submask, nd);
+                retval = inode->i_op->permission(inode, mask);
                if (!retval) {
                        /*
                         * Exec permission on a regular file is denied if none
@@ -277,7 +264,7 @@ int permission(struct inode *inode, int mask, struct nameidata *nd)
                                return -EACCES;
                }
        } else {
-                retval = generic_permission(inode, submask, NULL);
+                retval = generic_permission(inode, mask, NULL);
        }
        if (retval)
                return retval;
@@ -286,7 +273,8 @@ int permission(struct inode *inode, int mask, struct nameidata *nd)
        if (retval)
                return retval;
-        return security_inode_permission(inode, mask, nd);
+        return security_inode_permission(inode,
+                        mask & (MAY_READ|MAY_WRITE|MAY_EXEC));
 }
 /**
@@ -301,7 +289,7 @@ int permission(struct inode *inode, int mask, struct nameidata *nd)
 */
 int vfs_permission(struct nameidata *nd, int mask)
 {
-        return permission(nd->path.dentry->d_inode, mask, nd);
+        return inode_permission(nd->path.dentry->d_inode, mask);
 }
 /**
@@ -318,7 +306,7 @@ int vfs_permission(struct nameidata *nd, int mask)
 */
 int file_permission(struct file *file, int mask)
 {
-        return permission(file->f_path.dentry->d_inode, mask, NULL);
+        return inode_permission(file->f_path.dentry->d_inode, mask);
 }
 /*
@@ -459,8 +447,7 @@ static struct dentry * cached_lookup(struct dentry * parent, struct qstr * name,
 * short-cut DAC fails, then call permission() to do more
 * complete permission check.
 */
-static int exec_permission_lite(struct inode *inode,
+static int exec_permission_lite(struct inode *inode)
-                                       struct nameidata *nd)
 {
        umode_t mode = inode->i_mode;
@@ -486,7 +473,7 @@ static int exec_permission_lite(struct inode *inode,
        return -EACCES;
 ok:
-        return security_inode_permission(inode, MAY_EXEC, nd);
+        return security_inode_permission(inode, MAY_EXEC);
 }
 /*
@@ -519,7 +506,14 @@ static struct dentry * real_lookup(struct dentry * parent, struct qstr * name, s
         */
        result = d_lookup(parent, name);
        if (!result) {
-                struct dentry * dentry = d_alloc(parent, name);
+                struct dentry *dentry;
+                /* Don't create child dentry for a dead directory. */
+                result = ERR_PTR(-ENOENT);
+                if (IS_DEADDIR(dir))
+                        goto out_unlock;
+                dentry = d_alloc(parent, name);
                result = ERR_PTR(-ENOMEM);
                if (dentry) {
                        result = dir->i_op->lookup(dir, dentry, nd);
@@ -528,6 +522,7 @@ static struct dentry * real_lookup(struct dentry * parent, struct qstr * name, s
                        else
                                result = dentry;
                }
+out_unlock:
                mutex_unlock(&dir->i_mutex);
                return result;
        }
@@ -545,27 +540,16 @@ static struct dentry * real_lookup(struct dentry * parent, struct qstr * name, s
        return result;
 }
-static int __emul_lookup_dentry(const char *, struct nameidata *);
 /* SMP-safe */
-static __always_inline int
+static __always_inline void
 walk_init_root(const char *name, struct nameidata *nd)
 {
        struct fs_struct *fs = current->fs;
        read_lock(&fs->lock);
-        if (fs->altroot.dentry && !(nd->flags & LOOKUP_NOALT)) {
-                nd->path = fs->altroot;
-                path_get(&fs->altroot);
-                read_unlock(&fs->lock);
-                if (__emul_lookup_dentry(name,nd))
-                        return 0;
-                read_lock(&fs->lock);
-        }
        nd->path = fs->root;
        path_get(&fs->root);
        read_unlock(&fs->lock);
-        return 1;
 }
 /*
@@ -606,12 +590,9 @@ static __always_inline int __vfs_follow_link(struct nameidata *nd, const char *l
        if (*link == '/') {
                path_put(&nd->path);
-                if (!walk_init_root(link, nd))
+                walk_init_root(link, nd);
-                        /* weird __emul_prefix() stuff did it */
-                        goto out;
        }
        res = link_path_walk(link, nd);
-out:
        if (nd->depth || res || nd->last_type!=LAST_NORM)
                return res;
        /*
@@ -889,7 +870,7 @@ static int __link_path_walk(const char *name, struct nameidata *nd)
                unsigned int c;
                nd->flags |= LOOKUP_CONTINUE;
-                err = exec_permission_lite(inode, nd);
+                err = exec_permission_lite(inode);
                if (err == -EAGAIN)
                        err = vfs_permission(nd, MAY_EXEC);
                if (err)
@@ -1060,67 +1041,6 @@ static int path_walk(const char *name, struct nameidata *nd)
        return link_path_walk(name, nd);
 }
-/* 
- * SMP-safe: Returns 1 and nd will have valid dentry and mnt, if
- * everything is done. Returns 0 and drops input nd, if lookup failed;
- */
-static int __emul_lookup_dentry(const char *name, struct nameidata *nd)
-{
-        if (path_walk(name, nd))
-                return 0;               /* something went wrong... */
-        if (!nd->path.dentry->d_inode ||
-            S_ISDIR(nd->path.dentry->d_inode->i_mode)) {
-                struct path old_path = nd->path;
-                struct qstr last = nd->last;
-                int last_type = nd->last_type;
-                struct fs_struct *fs = current->fs;
-                /*
-                 * NAME was not found in alternate root or it's a directory.
-                 * Try to find it in the normal root:
-                 */
-                nd->last_type = LAST_ROOT;
-                read_lock(&fs->lock);
-                nd->path = fs->root;
-                path_get(&fs->root);
-                read_unlock(&fs->lock);
-                if (path_walk(name, nd) == 0) {
-                        if (nd->path.dentry->d_inode) {
-                                path_put(&old_path);
-                                return 1;
-                        }
-                        path_put(&nd->path);
-                }
-                nd->path = old_path;
-                nd->last = last;
-                nd->last_type = last_type;
-        }
-        return 1;
-}
-void set_fs_altroot(void)
-{
-        char *emul = __emul_prefix();
-        struct nameidata nd;
-        struct path path = {}, old_path;
-        int err;
-        struct fs_struct *fs = current->fs;
-        if (!emul)
-                goto set_it;
-        err = path_lookup(emul, LOOKUP_FOLLOW|LOOKUP_DIRECTORY|LOOKUP_NOALT, &nd);
-        if (!err)
-                path = nd.path;
-set_it:
-        write_lock(&fs->lock);
-        old_path = fs->altroot;
-        fs->altroot = path;
-        write_unlock(&fs->lock);
-        if (old_path.dentry)
-                path_put(&old_path);
-}
 /* Returns 0 and nd will be valid on success; Retuns error, otherwise. */
 static int do_path_lookup(int dfd, const char *name,
                                unsigned int flags, struct nameidata *nd)
@@ -1136,14 +1056,6 @@ static int do_path_lookup(int dfd, const char *name,
        if (*name=='/') {
                read_lock(&fs->lock);
-                if (fs->altroot.dentry && !(nd->flags & LOOKUP_NOALT)) {
-                        nd->path = fs->altroot;
-                        path_get(&fs->altroot);
-                        read_unlock(&fs->lock);
-                        if (__emul_lookup_dentry(name,nd))
-                                goto out; /* found in altroot */
-                        read_lock(&fs->lock);
-                }
                nd->path = fs->root;
                path_get(&fs->root);
                read_unlock(&fs->lock);
@@ -1177,7 +1089,6 @@ static int do_path_lookup(int dfd, const char *name,
        }
        retval = path_walk(name, nd);
-out:
        if (unlikely(!retval && !audit_dummy_context() && nd->path.dentry &&
                                nd->path.dentry->d_inode))
                audit_inode(name, nd->path.dentry);
@@ -1282,19 +1193,6 @@ static int path_lookup_create(int dfd, const char *name,
                        nd, open_flags, create_mode);
 }
-int __user_path_lookup_open(const char __user *name, unsigned int lookup_flags,
-                struct nameidata *nd, int open_flags)
-{
-        char *tmp = getname(name);
-        int err = PTR_ERR(tmp);
-        if (!IS_ERR(tmp)) {
-                err = __path_lookup_intent_open(AT_FDCWD, tmp, lookup_flags, nd, open_flags, 0);
-                putname(tmp);
-        }
-        return err;
-}
 static struct dentry *__lookup_hash(struct qstr *name,
                struct dentry *base, struct nameidata *nd)
 {
@@ -1317,7 +1215,14 @@ static struct dentry *__lookup_hash(struct qstr *name,
        dentry = cached_lookup(base, name, nd);
        if (!dentry) {
-                struct dentry *new = d_alloc(base, name);
+                struct dentry *new;
+                /* Don't create child dentry for a dead directory. */
+                dentry = ERR_PTR(-ENOENT);
+                if (IS_DEADDIR(inode))
+                        goto out;
+                new = d_alloc(base, name);
                dentry = ERR_PTR(-ENOMEM);
                if (!new)
                        goto out;
@@ -1340,7 +1245,7 @@ static struct dentry *lookup_hash(struct nameidata *nd)
 {
        int err;
-        err = permission(nd->path.dentry->d_inode, MAY_EXEC, nd);
+        err = inode_permission(nd->path.dentry->d_inode, MAY_EXEC);
        if (err)
                return ERR_PTR(err);
        return __lookup_hash(&nd->last, nd->path.dentry, nd);
@@ -1388,7 +1293,7 @@ struct dentry *lookup_one_len(const char *name, struct dentry *base, int len)
        if (err)
                return ERR_PTR(err);
-        err = permission(base->d_inode, MAY_EXEC, NULL);
+        err = inode_permission(base->d_inode, MAY_EXEC);
        if (err)
                return ERR_PTR(err);
        return __lookup_hash(&this, base, NULL);
@@ -1416,22 +1321,40 @@ struct dentry *lookup_one_noperm(const char *name, struct dentry *base)
        return __lookup_hash(&this, base, NULL);
 }
-int __user_walk_fd(int dfd, const char __user *name, unsigned flags,
+int user_path_at(int dfd, const char __user *name, unsigned flags,
-                            struct nameidata *nd)
+                 struct path *path)
 {
+        struct nameidata nd;
        char *tmp = getname(name);
        int err = PTR_ERR(tmp);
        if (!IS_ERR(tmp)) {
-                err = do_path_lookup(dfd, tmp, flags, nd);
+                BUG_ON(flags & LOOKUP_PARENT);
+                err = do_path_lookup(dfd, tmp, flags, &nd);
                putname(tmp);
+                if (!err)
+                        *path = nd.path;
        }
        return err;
 }
-int __user_walk(const char __user *name, unsigned flags, struct nameidata *nd)
+static int user_path_parent(int dfd, const char __user *path,
+                        struct nameidata *nd, char **name)
 {
-        return __user_walk_fd(AT_FDCWD, name, flags, nd);
+        char *s = getname(path);
+        int error;
+        if (IS_ERR(s))
+                return PTR_ERR(s);
+        error = do_path_lookup(dfd, s, LOOKUP_PARENT, nd);
+        if (error)
+                putname(s);
+        else
+                *name = s;
+        return error;
 }
 /*
@@ -1478,7 +1401,7 @@ static int may_delete(struct inode *dir,struct dentry *victim,int isdir)
        BUG_ON(victim->d_parent->d_inode != dir);
        audit_inode_child(victim->d_name.name, victim, dir);
-        error = permission(dir,MAY_WRITE | MAY_EXEC, NULL);
+        error = inode_permission(dir, MAY_WRITE | MAY_EXEC);
        if (error)
                return error;
        if (IS_APPEND(dir))
@@ -1515,7 +1438,7 @@ static inline int may_create(struct inode *dir, struct dentry *child,
                return -EEXIST;
        if (IS_DEADDIR(dir))
                return -ENOENT;
-        return permission(dir,MAY_WRITE | MAY_EXEC, nd);
+        return inode_permission(dir, MAY_WRITE | MAY_EXEC);
 }
 /* 
@@ -1755,7 +1678,7 @@ struct file *do_filp_open(int dfd, const char *pathname,
        int will_write;
        int flag = open_to_namei_flags(open_flag);
-        acc_mode = ACC_MODE(flag);
+        acc_mode = MAY_OPEN | ACC_MODE(flag);
        /* O_TRUNC implies we need access checks for write permissions */
        if (flag & O_TRUNC)
@@ -2071,20 +1994,18 @@ static int may_mknod(mode_t mode)
 asmlinkage long sys_mknodat(int dfd, const char __user *filename, int mode,
                                unsigned dev)
 {
-        int error = 0;
+        int error;
-        char * tmp;
+        char *tmp;
-        struct dentry * dentry;
+        struct dentry *dentry;
        struct nameidata nd;
        if (S_ISDIR(mode))
                return -EPERM;
-        tmp = getname(filename);
-        if (IS_ERR(tmp))
-                return PTR_ERR(tmp);
-        error = do_path_lookup(dfd, tmp, LOOKUP_PARENT, &nd);
+        error = user_path_parent(dfd, filename, &nd, &tmp);
        if (error)
-                goto out;
+                return error;
        dentry = lookup_create(&nd, 0);
        if (IS_ERR(dentry)) {
                error = PTR_ERR(dentry);
@@ -2116,7 +2037,6 @@ out_dput:
 out_unlock:
        mutex_unlock(&nd.path.dentry->d_inode->i_mutex);
        path_put(&nd.path);
-out:
        putname(tmp);
        return error;
@@ -2156,14 +2076,10 @@ asmlinkage long sys_mkdirat(int dfd, const char __user *pathname, int mode)
        struct dentry *dentry;
        struct nameidata nd;
-        tmp = getname(pathname);
+        error = user_path_parent(dfd, pathname, &nd, &tmp);
-        error = PTR_ERR(tmp);
+        if (error)
-        if (IS_ERR(tmp))
                goto out_err;
-        error = do_path_lookup(dfd, tmp, LOOKUP_PARENT, &nd);
-        if (error)
-                goto out;
        dentry = lookup_create(&nd, 1);
        error = PTR_ERR(dentry);
        if (IS_ERR(dentry))
@@ -2181,7 +2097,6 @@ out_dput:
 out_unlock:
        mutex_unlock(&nd.path.dentry->d_inode->i_mutex);
        path_put(&nd.path);
-out:
        putname(tmp);
 out_err:
        return error;
@@ -2259,13 +2174,9 @@ static long do_rmdir(int dfd, const char __user *pathname)
        struct dentry *dentry;
        struct nameidata nd;
-        name = getname(pathname);
+        error = user_path_parent(dfd, pathname, &nd, &name);
-        if(IS_ERR(name))
-                return PTR_ERR(name);
-        error = do_path_lookup(dfd, name, LOOKUP_PARENT, &nd);
        if (error)
-                goto exit;
+                return error;
        switch(nd.last_type) {
                case LAST_DOTDOT:
@@ -2294,7 +2205,6 @@ exit2:
        mutex_unlock(&nd.path.dentry->d_inode->i_mutex);
 exit1:
        path_put(&nd.path);
-exit:
        putname(name);
        return error;
 }
@@ -2343,19 +2253,16 @@ int vfs_unlink(struct inode *dir, struct dentry *dentry)
 */
 static long do_unlinkat(int dfd, const char __user *pathname)
 {
-        int error = 0;
+        int error;
-        char * name;
+        char *name;
        struct dentry *dentry;
        struct nameidata nd;
        struct inode *inode = NULL;
-        name = getname(pathname);
+        error = user_path_parent(dfd, pathname, &nd, &name);
-        if(IS_ERR(name))
-                return PTR_ERR(name);
-        error = do_path_lookup(dfd, name, LOOKUP_PARENT, &nd);
        if (error)
-                goto exit;
+                return error;
        error = -EISDIR;
        if (nd.last_type != LAST_NORM)
                goto exit1;
@@ -2382,7 +2289,6 @@ static long do_unlinkat(int dfd, const char __user *pathname)
                iput(inode);    /* truncate the inode here */
 exit1:
        path_put(&nd.path);
-exit:
        putname(name);
        return error;
@@ -2408,7 +2314,7 @@ asmlinkage long sys_unlink(const char __user *pathname)
        return do_unlinkat(AT_FDCWD, pathname);
 }
-int vfs_symlink(struct inode *dir, struct dentry *dentry, const char *oldname, int mode)
+int vfs_symlink(struct inode *dir, struct dentry *dentry, const char *oldname)
 {
        int error = may_create(dir, dentry, NULL);
@@ -2432,23 +2338,20 @@ int vfs_symlink(struct inode *dir, struct dentry *dentry, const char *oldname, i
 asmlinkage long sys_symlinkat(const char __user *oldname,
                              int newdfd, const char __user *newname)
 {
-        int error = 0;
+        int error;
-        char * from;
+        char *from;
-        char * to;
+        char *to;
        struct dentry *dentry;
        struct nameidata nd;
        from = getname(oldname);
-        if(IS_ERR(from))
+        if (IS_ERR(from))
                return PTR_ERR(from);
-        to = getname(newname);
-        error = PTR_ERR(to);
-        if (IS_ERR(to))
-                goto out_putname;
-        error = do_path_lookup(newdfd, to, LOOKUP_PARENT, &nd);
+        error = user_path_parent(newdfd, newname, &nd, &to);
        if (error)
-                goto out;
+                goto out_putname;
        dentry = lookup_create(&nd, 0);
        error = PTR_ERR(dentry);
        if (IS_ERR(dentry))
@@ -2457,14 +2360,13 @@ asmlinkage long sys_symlinkat(const char __user *oldname,
        error = mnt_want_write(nd.path.mnt);
        if (error)
                goto out_dput;
-        error = vfs_symlink(nd.path.dentry->d_inode, dentry, from, S_IALLUGO);
+        error = vfs_symlink(nd.path.dentry->d_inode, dentry, from);
        mnt_drop_write(nd.path.mnt);
 out_dput:
        dput(dentry);
 out_unlock:
        mutex_unlock(&nd.path.dentry->d_inode->i_mutex);
        path_put(&nd.path);
-out:
        putname(to);
 out_putname:
        putname(from);
@@ -2498,19 +2400,19 @@ int vfs_link(struct dentry *old_dentry, struct inode *dir, struct dentry *new_de
                return -EPERM;
        if (!dir->i_op || !dir->i_op->link)
                return -EPERM;
-        if (S_ISDIR(old_dentry->d_inode->i_mode))
+        if (S_ISDIR(inode->i_mode))
                return -EPERM;
        error = security_inode_link(old_dentry, dir, new_dentry);
        if (error)
                return error;
-        mutex_lock(&old_dentry->d_inode->i_mutex);
+        mutex_lock(&inode->i_mutex);
        DQUOT_INIT(dir);
        error = dir->i_op->link(old_dentry, dir, new_dentry);
-        mutex_unlock(&old_dentry->d_inode->i_mutex);
+        mutex_unlock(&inode->i_mutex);
        if (!error)
-                fsnotify_link(dir, old_dentry->d_inode, new_dentry);
+                fsnotify_link(dir, inode, new_dentry);
        return error;
 }
@@ -2528,27 +2430,25 @@ asmlinkage long sys_linkat(int olddfd, const char __user *oldname,
                           int flags)
 {
        struct dentry *new_dentry;
-        struct nameidata nd, old_nd;
+        struct nameidata nd;
+        struct path old_path;
        int error;
-        char * to;
+        char *to;
        if ((flags & ~AT_SYMLINK_FOLLOW) != 0)
                return -EINVAL;
-        to = getname(newname);
+        error = user_path_at(olddfd, oldname,
-        if (IS_ERR(to))
+                             flags & AT_SYMLINK_FOLLOW ? LOOKUP_FOLLOW : 0,
-                return PTR_ERR(to);
+                             &old_path);
-        error = __user_walk_fd(olddfd, oldname,
-                               flags & AT_SYMLINK_FOLLOW ? LOOKUP_FOLLOW : 0,
-                               &old_nd);
        if (error)
-                goto exit;
+                return error;
-        error = do_path_lookup(newdfd, to, LOOKUP_PARENT, &nd);
+        error = user_path_parent(newdfd, newname, &nd, &to);
        if (error)
                goto out;
        error = -EXDEV;
-        if (old_nd.path.mnt != nd.path.mnt)
+        if (old_path.mnt != nd.path.mnt)
                goto out_release;
        new_dentry = lookup_create(&nd, 0);
        error = PTR_ERR(new_dentry);
@@ -2557,7 +2457,7 @@ asmlinkage long sys_linkat(int olddfd, const char __user *oldname,
        error = mnt_want_write(nd.path.mnt);
        if (error)
                goto out_dput;
-        error = vfs_link(old_nd.path.dentry, nd.path.dentry->d_inode, new_dentry);
+        error = vfs_link(old_path.dentry, nd.path.dentry->d_inode, new_dentry);
        mnt_drop_write(nd.path.mnt);
 out_dput:
        dput(new_dentry);
@@ -2565,10 +2465,9 @@ out_unlock:
        mutex_unlock(&nd.path.dentry->d_inode->i_mutex);
 out_release:
        path_put(&nd.path);
-out:
-        path_put(&old_nd.path);
-exit:
        putname(to);
+out:
+        path_put(&old_path);
        return error;
 }
@@ -2621,7 +2520,7 @@ static int vfs_rename_dir(struct inode *old_dir, struct dentry *old_dentry,
         * we'll need to flip '..'.
         */
        if (new_dir != old_dir) {
-                error = permission(old_dentry->d_inode, MAY_WRITE, NULL);
+                error = inode_permission(old_dentry->d_inode, MAY_WRITE);
                if (error)
                        return error;
        }
@@ -2724,20 +2623,22 @@ int vfs_rename(struct inode *old_dir, struct dentry *old_dentry,
        return error;
 }
-static int do_rename(int olddfd, const char *oldname,
+asmlinkage long sys_renameat(int olddfd, const char __user *oldname,
-                        int newdfd, const char *newname)
+                             int newdfd, const char __user *newname)
 {
-        int error = 0;
+        struct dentry *old_dir, *new_dir;
-        struct dentry * old_dir, * new_dir;
+        struct dentry *old_dentry, *new_dentry;
-        struct dentry * old_dentry, *new_dentry;
+        struct dentry *trap;
-        struct dentry * trap;
        struct nameidata oldnd, newnd;
+        char *from;
+        char *to;
+        int error;
-        error = do_path_lookup(olddfd, oldname, LOOKUP_PARENT, &oldnd);
+        error = user_path_parent(olddfd, oldname, &oldnd, &from);
        if (error)
                goto exit;
-        error = do_path_lookup(newdfd, newname, LOOKUP_PARENT, &newnd);
+        error = user_path_parent(newdfd, newname, &newnd, &to);
        if (error)
                goto exit1;
@@ -2799,29 +2700,11 @@ exit3:
        unlock_rename(new_dir, old_dir);
 exit2:
        path_put(&newnd.path);
+        putname(to);
 exit1:
        path_put(&oldnd.path);
-exit:
-        return error;
-}
-asmlinkage long sys_renameat(int olddfd, const char __user *oldname,
-                             int newdfd, const char __user *newname)
-{
-        int error;
-        char * from;
-        char * to;
-        from = getname(oldname);
-        if(IS_ERR(from))
-                return PTR_ERR(from);
-        to = getname(newname);
-        error = PTR_ERR(to);
-        if (!IS_ERR(to)) {
-                error = do_rename(olddfd, from, newdfd, to);
-                putname(to);
-        }
        putname(from);
+exit:
        return error;
 }
@@ -2959,8 +2842,7 @@ const struct inode_operations page_symlink_inode_operations = {
        .put_link       = page_put_link,
 };
-EXPORT_SYMBOL(__user_walk);
+EXPORT_SYMBOL(user_path_at);
-EXPORT_SYMBOL(__user_walk_fd);
 EXPORT_SYMBOL(follow_down);
 EXPORT_SYMBOL(follow_up);
 EXPORT_SYMBOL(get_write_access); /* binfmt_aout */
@@ -2975,7 +2857,7 @@ EXPORT_SYMBOL(page_symlink);
 EXPORT_SYMBOL(page_symlink_inode_operations);
 EXPORT_SYMBOL(path_lookup);
 EXPORT_SYMBOL(vfs_path_lookup);
-EXPORT_SYMBOL(permission);
+EXPORT_SYMBOL(inode_permission);
 EXPORT_SYMBOL(vfs_permission);
 EXPORT_SYMBOL(file_permission);
 EXPORT_SYMBOL(unlock_rename);
diff --git a/fs/namespace.c b/fs/namespace.c
index 4f6f7635b59c..411728c0c8bb 100644
--- a/fs/namespace.c
+++ b/fs/namespace.c
@@ -112,9 +112,13 @@ struct vfsmount *alloc_vfsmnt(const char *name)
                int err;
                err = mnt_alloc_id(mnt);
-                if (err) {
+                if (err)
-                        kmem_cache_free(mnt_cache, mnt);
+                        goto out_free_cache;
-                        return NULL;
+                if (name) {
+                        mnt->mnt_devname = kstrdup(name, GFP_KERNEL);
+                        if (!mnt->mnt_devname)
+                                goto out_free_id;
                }
                atomic_set(&mnt->mnt_count, 1);
@@ -127,16 +131,14 @@ struct vfsmount *alloc_vfsmnt(const char *name)
                INIT_LIST_HEAD(&mnt->mnt_slave_list);
                INIT_LIST_HEAD(&mnt->mnt_slave);
                atomic_set(&mnt->__mnt_writers, 0);
-                if (name) {
-                        int size = strlen(name) + 1;
-                        char *newname = kmalloc(size, GFP_KERNEL);
-                        if (newname) {
-                                memcpy(newname, name, size);
-                                mnt->mnt_devname = newname;
-                        }
-                }
        }
        return mnt;
+out_free_id:
+        mnt_free_id(mnt);
+out_free_cache:
+        kmem_cache_free(mnt_cache, mnt);
+        return NULL;
 }
 /*
@@ -309,10 +311,9 @@ static void handle_write_count_underflow(struct vfsmount *mnt)
         */
        if ((atomic_read(&mnt->__mnt_writers) < 0) &&
            !(mnt->mnt_flags & MNT_IMBALANCED_WRITE_COUNT)) {
-                printk(KERN_DEBUG "leak detected on mount(%p) writers "
+                WARN(1, KERN_DEBUG "leak detected on mount(%p) writers "
                                "count: %d\n",
                        mnt, atomic_read(&mnt->__mnt_writers));
-                WARN_ON(1);
                /* use the flag to keep the dmesg spam down */
                mnt->mnt_flags |= MNT_IMBALANCED_WRITE_COUNT;
        }
@@ -1129,27 +1130,27 @@ static int do_umount(struct vfsmount *mnt, int flags)
 asmlinkage long sys_umount(char __user * name, int flags)
 {
-        struct nameidata nd;
+        struct path path;
        int retval;
-        retval = __user_walk(name, LOOKUP_FOLLOW, &nd);
+        retval = user_path(name, &path);
        if (retval)
                goto out;
        retval = -EINVAL;
-        if (nd.path.dentry != nd.path.mnt->mnt_root)
+        if (path.dentry != path.mnt->mnt_root)
                goto dput_and_out;
-        if (!check_mnt(nd.path.mnt))
+        if (!check_mnt(path.mnt))
                goto dput_and_out;
        retval = -EPERM;
        if (!capable(CAP_SYS_ADMIN))
                goto dput_and_out;
-        retval = do_umount(nd.path.mnt, flags);
+        retval = do_umount(path.mnt, flags);
 dput_and_out:
        /* we mustn't call path_put() as that would clear mnt_expiry_mark */
-        dput(nd.path.dentry);
+        dput(path.dentry);
-        mntput_no_expire(nd.path.mnt);
+        mntput_no_expire(path.mnt);
 out:
        return retval;
 }
@@ -1973,7 +1974,7 @@ static struct mnt_namespace *dup_mnt_ns(struct mnt_namespace *mnt_ns,
                struct fs_struct *fs)
 {
        struct mnt_namespace *new_ns;
-        struct vfsmount *rootmnt = NULL, *pwdmnt = NULL, *altrootmnt = NULL;
+        struct vfsmount *rootmnt = NULL, *pwdmnt = NULL;
        struct vfsmount *p, *q;
        new_ns = kmalloc(sizeof(struct mnt_namespace), GFP_KERNEL);
@@ -2016,10 +2017,6 @@ static struct mnt_namespace *dup_mnt_ns(struct mnt_namespace *mnt_ns,
                                pwdmnt = p;
                                fs->pwd.mnt = mntget(q);
                        }
-                        if (p == fs->altroot.mnt) {
-                                altrootmnt = p;
-                                fs->altroot.mnt = mntget(q);
-                        }
                }
                p = next_mnt(p, mnt_ns->root);
                q = next_mnt(q, new_ns->root);
@@ -2030,8 +2027,6 @@ static struct mnt_namespace *dup_mnt_ns(struct mnt_namespace *mnt_ns,
                mntput(rootmnt);
        if (pwdmnt)
                mntput(pwdmnt);
-        if (altrootmnt)
-                mntput(altrootmnt);
        return new_ns;
 }
@@ -2184,28 +2179,26 @@ asmlinkage long sys_pivot_root(const char __user * new_root,
                               const char __user * put_old)
 {
        struct vfsmount *tmp;
-        struct nameidata new_nd, old_nd;
+        struct path new, old, parent_path, root_parent, root;
-        struct path parent_path, root_parent, root;
        int error;
        if (!capable(CAP_SYS_ADMIN))
                return -EPERM;
-        error = __user_walk(new_root, LOOKUP_FOLLOW | LOOKUP_DIRECTORY,
+        error = user_path_dir(new_root, &new);
-                            &new_nd);
        if (error)
                goto out0;
        error = -EINVAL;
-        if (!check_mnt(new_nd.path.mnt))
+        if (!check_mnt(new.mnt))
                goto out1;
-        error = __user_walk(put_old, LOOKUP_FOLLOW | LOOKUP_DIRECTORY, &old_nd);
+        error = user_path_dir(put_old, &old);
        if (error)
                goto out1;
-        error = security_sb_pivotroot(&old_nd.path, &new_nd.path);
+        error = security_sb_pivotroot(&old, &new);
        if (error) {
-                path_put(&old_nd.path);
+                path_put(&old);
                goto out1;
        }
@@ -2214,69 +2207,69 @@ asmlinkage long sys_pivot_root(const char __user * new_root,
        path_get(&current->fs->root);
        read_unlock(&current->fs->lock);
        down_write(&namespace_sem);
-        mutex_lock(&old_nd.path.dentry->d_inode->i_mutex);
+        mutex_lock(&old.dentry->d_inode->i_mutex);
        error = -EINVAL;
-        if (IS_MNT_SHARED(old_nd.path.mnt) ||
+        if (IS_MNT_SHARED(old.mnt) ||
-                IS_MNT_SHARED(new_nd.path.mnt->mnt_parent) ||
+                IS_MNT_SHARED(new.mnt->mnt_parent) ||
                IS_MNT_SHARED(root.mnt->mnt_parent))
                goto out2;
        if (!check_mnt(root.mnt))
                goto out2;
        error = -ENOENT;
-        if (IS_DEADDIR(new_nd.path.dentry->d_inode))
+        if (IS_DEADDIR(new.dentry->d_inode))
                goto out2;
-        if (d_unhashed(new_nd.path.dentry) && !IS_ROOT(new_nd.path.dentry))
+        if (d_unhashed(new.dentry) && !IS_ROOT(new.dentry))
                goto out2;
-        if (d_unhashed(old_nd.path.dentry) && !IS_ROOT(old_nd.path.dentry))
+        if (d_unhashed(old.dentry) && !IS_ROOT(old.dentry))
                goto out2;
        error = -EBUSY;
-        if (new_nd.path.mnt == root.mnt ||
+        if (new.mnt == root.mnt ||
-            old_nd.path.mnt == root.mnt)
+            old.mnt == root.mnt)
                goto out2; /* loop, on the same file system  */
        error = -EINVAL;
        if (root.mnt->mnt_root != root.dentry)
                goto out2; /* not a mountpoint */
        if (root.mnt->mnt_parent == root.mnt)
                goto out2; /* not attached */
-        if (new_nd.path.mnt->mnt_root != new_nd.path.dentry)
+        if (new.mnt->mnt_root != new.dentry)
                goto out2; /* not a mountpoint */
-        if (new_nd.path.mnt->mnt_parent == new_nd.path.mnt)
+        if (new.mnt->mnt_parent == new.mnt)
                goto out2; /* not attached */
        /* make sure we can reach put_old from new_root */
-        tmp = old_nd.path.mnt;
+        tmp = old.mnt;
        spin_lock(&vfsmount_lock);
-        if (tmp != new_nd.path.mnt) {
+        if (tmp != new.mnt) {
                for (;;) {
                        if (tmp->mnt_parent == tmp)
                                goto out3; /* already mounted on put_old */
-                        if (tmp->mnt_parent == new_nd.path.mnt)
+                        if (tmp->mnt_parent == new.mnt)
                                break;
                        tmp = tmp->mnt_parent;
                }
-                if (!is_subdir(tmp->mnt_mountpoint, new_nd.path.dentry))
+                if (!is_subdir(tmp->mnt_mountpoint, new.dentry))
                        goto out3;
-        } else if (!is_subdir(old_nd.path.dentry, new_nd.path.dentry))
+        } else if (!is_subdir(old.dentry, new.dentry))
                goto out3;
-        detach_mnt(new_nd.path.mnt, &parent_path);
+        detach_mnt(new.mnt, &parent_path);
        detach_mnt(root.mnt, &root_parent);
        /* mount old root on put_old */
-        attach_mnt(root.mnt, &old_nd.path);
+        attach_mnt(root.mnt, &old);
        /* mount new_root on / */
-        attach_mnt(new_nd.path.mnt, &root_parent);
+        attach_mnt(new.mnt, &root_parent);
        touch_mnt_namespace(current->nsproxy->mnt_ns);
        spin_unlock(&vfsmount_lock);
-        chroot_fs_refs(&root, &new_nd.path);
+        chroot_fs_refs(&root, &new);
-        security_sb_post_pivotroot(&root, &new_nd.path);
+        security_sb_post_pivotroot(&root, &new);
        error = 0;
        path_put(&root_parent);
        path_put(&parent_path);
 out2:
-        mutex_unlock(&old_nd.path.dentry->d_inode->i_mutex);
+        mutex_unlock(&old.dentry->d_inode->i_mutex);
        up_write(&namespace_sem);
        path_put(&root);
-        path_put(&old_nd.path);
+        path_put(&old);
 out1:
-        path_put(&new_nd.path);
+        path_put(&new);
 out0:
        return error;
 out3:
diff --git a/fs/ncpfs/dir.c b/fs/ncpfs/dir.c
index 011ef0b6d2d4..07e9715b8658 100644
--- a/fs/ncpfs/dir.c
+++ b/fs/ncpfs/dir.c
@@ -266,7 +266,7 @@ leave_me:;
 static int
-__ncp_lookup_validate(struct dentry * dentry, struct nameidata *nd)
+__ncp_lookup_validate(struct dentry *dentry)
 {
        struct ncp_server *server;
        struct dentry *parent;
@@ -340,7 +340,7 @@ ncp_lookup_validate(struct dentry * dentry, struct nameidata *nd)
 {
        int res;
        lock_kernel();
-        res = __ncp_lookup_validate(dentry, nd);
+        res = __ncp_lookup_validate(dentry);
        unlock_kernel();
        return res;
 }
diff --git a/fs/ncpfs/inode.c b/fs/ncpfs/inode.c
index 2e5ab1204dec..d642f0e5b365 100644
--- a/fs/ncpfs/inode.c
+++ b/fs/ncpfs/inode.c
@@ -64,7 +64,7 @@ static void ncp_destroy_inode(struct inode *inode)
        kmem_cache_free(ncp_inode_cachep, NCP_FINFO(inode));
 }
-static void init_once(struct kmem_cache *cachep, void *foo)
+static void init_once(void *foo)
 {
        struct ncp_inode_info *ei = (struct ncp_inode_info *) foo;
diff --git a/fs/nfs/dir.c b/fs/nfs/dir.c
index 28a238dab23a..74f92b717f78 100644
--- a/fs/nfs/dir.c
+++ b/fs/nfs/dir.c
@@ -1884,7 +1884,7 @@ static int nfs_do_access(struct inode *inode, struct rpc_cred *cred, int mask)
                return status;
        nfs_access_add_cache(inode, &cache);
 out:
-        if ((cache.mask & mask) == mask)
+        if ((mask & ~cache.mask & (MAY_READ | MAY_WRITE | MAY_EXEC)) == 0)
                return 0;
        return -EACCES;
 }
@@ -1907,17 +1907,17 @@ int nfs_may_open(struct inode *inode, struct rpc_cred *cred, int openflags)
        return nfs_do_access(inode, cred, nfs_open_permission_mask(openflags));
 }
-int nfs_permission(struct inode *inode, int mask, struct nameidata *nd)
+int nfs_permission(struct inode *inode, int mask)
 {
        struct rpc_cred *cred;
        int res = 0;
        nfs_inc_stats(inode, NFSIOS_VFSACCESS);
-        if (mask == 0)
+        if ((mask & (MAY_READ | MAY_WRITE | MAY_EXEC)) == 0)
                goto out;
        /* Is this sys_access() ? */
-        if (nd != NULL && (nd->flags & LOOKUP_ACCESS))
+        if (mask & MAY_ACCESS)
                goto force_lookup;
        switch (inode->i_mode & S_IFMT) {
@@ -1926,8 +1926,7 @@ int nfs_permission(struct inode *inode, int mask, struct nameidata *nd)
                case S_IFREG:
                        /* NFSv4 has atomic_open... */
                        if (nfs_server_capable(inode, NFS_CAP_ATOMIC_OPEN)
-                                        && nd != NULL
+                                        && (mask & MAY_OPEN))
-                                        && (nd->flags & LOOKUP_OPEN))
                                goto out;
                        break;
                case S_IFDIR:
diff --git a/fs/nfs/inode.c b/fs/nfs/inode.c
index df23f987da6b..52daefa2f521 100644
--- a/fs/nfs/inode.c
+++ b/fs/nfs/inode.c
@@ -1242,7 +1242,7 @@ static inline void nfs4_init_once(struct nfs_inode *nfsi)
 #endif
 }
-static void init_once(struct kmem_cache * cachep, void *foo)
+static void init_once(void *foo)
 {
        struct nfs_inode *nfsi = (struct nfs_inode *) foo;
diff --git a/fs/nfs/super.c b/fs/nfs/super.c
index 1b94e3650f5c..9abcd2b329f7 100644
--- a/fs/nfs/super.c
+++ b/fs/nfs/super.c
@@ -1718,9 +1718,9 @@ nfs_remount(struct super_block *sb, int *flags, char *raw_data)
         * ones were explicitly specified. Fall back to legacy behavior and
         * just return success.
         */
-        if ((nfsvers == 4 && options4->version == 1) ||
+        if ((nfsvers == 4 && (!options4 || options4->version == 1)) ||
-            (nfsvers <= 3 && options->version >= 1 &&
+            (nfsvers <= 3 && (!options || (options->version >= 1 &&
-             options->version <= 6))
+                                           options->version <= 6))))
                return 0;
        data = kzalloc(sizeof(*data), GFP_KERNEL);
diff --git a/fs/nfs/unlink.c b/fs/nfs/unlink.c
index 3adf8b266461..f089e5839d7d 100644
--- a/fs/nfs/unlink.c
+++ b/fs/nfs/unlink.c
@@ -95,10 +95,11 @@ static void nfs_async_unlink_done(struct rpc_task *task, void *calldata)
 static void nfs_async_unlink_release(void *calldata)
 {
        struct nfs_unlinkdata   *data = calldata;
+        struct super_block *sb = data->dir->i_sb;
        nfs_dec_sillycount(data->dir);
-        nfs_sb_deactive(NFS_SERVER(data->dir));
        nfs_free_unlinkdata(data);
+        nfs_sb_deactive(NFS_SB(sb));
 }
 static const struct rpc_call_ops nfs_unlink_ops = {
diff --git a/fs/nfsd/nfsctl.c b/fs/nfsd/nfsctl.c
index 1955a2702e60..c53e65f8f3a2 100644
--- a/fs/nfsd/nfsctl.c
+++ b/fs/nfsd/nfsctl.c
@@ -12,6 +12,7 @@
 #include <linux/time.h>
 #include <linux/errno.h>
 #include <linux/fs.h>
+#include <linux/namei.h>
 #include <linux/fcntl.h>
 #include <linux/net.h>
 #include <linux/in.h>
diff --git a/fs/nfsd/nfsfh.c b/fs/nfsd/nfsfh.c
index f45451eb1e38..ea37c96f0445 100644
--- a/fs/nfsd/nfsfh.c
+++ b/fs/nfsd/nfsfh.c
@@ -51,7 +51,7 @@ static int nfsd_acceptable(void *expv, struct dentry *dentry)
                /* make sure parents give x permission to user */
                int err;
                parent = dget_parent(tdentry);
-                err = permission(parent->d_inode, MAY_EXEC, NULL);
+                err = inode_permission(parent->d_inode, MAY_EXEC);
                if (err < 0) {
                        dput(parent);
                        break;
diff --git a/fs/nfsd/vfs.c b/fs/nfsd/vfs.c
index 0f4481e0502d..18060bed5267 100644
--- a/fs/nfsd/vfs.c
+++ b/fs/nfsd/vfs.c
@@ -1516,7 +1516,6 @@ nfsd_symlink(struct svc_rqst *rqstp, struct svc_fh *fhp,
        struct dentry   *dentry, *dnew;
        __be32          err, cerr;
        int             host_err;
-        umode_t         mode;
        err = nfserr_noent;
        if (!flen || !plen)
@@ -1535,11 +1534,6 @@ nfsd_symlink(struct svc_rqst *rqstp, struct svc_fh *fhp,
        if (IS_ERR(dnew))
                goto out_nfserr;
-        mode = S_IALLUGO;
-        /* Only the MODE ATTRibute is even vaguely meaningful */
-        if (iap && (iap->ia_valid & ATTR_MODE))
-                mode = iap->ia_mode & S_IALLUGO;
        host_err = mnt_want_write(fhp->fh_export->ex_path.mnt);
        if (host_err)
                goto out_nfserr;
@@ -1551,11 +1545,11 @@ nfsd_symlink(struct svc_rqst *rqstp, struct svc_fh *fhp,
                else {
                        strncpy(path_alloced, path, plen);
                        path_alloced[plen] = 0;
-                        host_err = vfs_symlink(dentry->d_inode, dnew, path_alloced, mode);
+                        host_err = vfs_symlink(dentry->d_inode, dnew, path_alloced);
                        kfree(path_alloced);
                }
        } else
-                host_err = vfs_symlink(dentry->d_inode, dnew, path, mode);
+                host_err = vfs_symlink(dentry->d_inode, dnew, path);
        if (!host_err) {
                if (EX_ISSYNC(fhp->fh_export))
@@ -1959,12 +1953,12 @@ nfsd_permission(struct svc_rqst *rqstp, struct svc_export *exp,
                return 0;
        /* This assumes  NFSD_MAY_{READ,WRITE,EXEC} == MAY_{READ,WRITE,EXEC} */
-        err = permission(inode, acc & (MAY_READ|MAY_WRITE|MAY_EXEC), NULL);
+        err = inode_permission(inode, acc & (MAY_READ|MAY_WRITE|MAY_EXEC));
        /* Allow read access to binaries even when mode 111 */
        if (err == -EACCES && S_ISREG(inode->i_mode) &&
            acc == (NFSD_MAY_READ | NFSD_MAY_OWNER_OVERRIDE))
-                err = permission(inode, MAY_EXEC, NULL);
+                err = inode_permission(inode, MAY_EXEC);
        return err? nfserrno(err) : 0;
 }
diff --git a/fs/ntfs/file.c b/fs/ntfs/file.c
index 3c5550cd11d6..d020866d4232 100644
--- a/fs/ntfs/file.c
+++ b/fs/ntfs/file.c
@@ -2118,7 +2118,7 @@ static ssize_t ntfs_file_aio_write_nolock(struct kiocb *iocb,
                goto out;
        if (!count)
                goto out;
-        err = remove_suid(file->f_path.dentry);
+        err = file_remove_suid(file);
        if (err)
                goto out;
        file_update_time(file);
diff --git a/fs/ntfs/super.c b/fs/ntfs/super.c
index 3e76f3b216bc..4a46743b5077 100644
--- a/fs/ntfs/super.c
+++ b/fs/ntfs/super.c
@@ -3080,7 +3080,7 @@ struct kmem_cache *ntfs_inode_cache;
 struct kmem_cache *ntfs_big_inode_cache;
 /* Init once constructor for the inode slab cache. */
-static void ntfs_big_inode_init_once(struct kmem_cache *cachep, void *foo)
+static void ntfs_big_inode_init_once(void *foo)
 {
        ntfs_inode *ni = (ntfs_inode *)foo;
diff --git a/fs/ocfs2/dlm/dlmfs.c b/fs/ocfs2/dlm/dlmfs.c
index e48aba698b77..533a789c3ef8 100644
--- a/fs/ocfs2/dlm/dlmfs.c
+++ b/fs/ocfs2/dlm/dlmfs.c
@@ -267,8 +267,7 @@ static ssize_t dlmfs_file_write(struct file *filp,
        return writelen;
 }
-static void dlmfs_init_once(struct kmem_cache *cachep,
+static void dlmfs_init_once(void *foo)
-                            void *foo)
 {
        struct dlmfs_inode_private *ip =
                (struct dlmfs_inode_private *) foo;
diff --git a/fs/ocfs2/file.c b/fs/ocfs2/file.c
index e8514e8b6ce8..be2dd95d3a1d 100644
--- a/fs/ocfs2/file.c
+++ b/fs/ocfs2/file.c
@@ -1176,7 +1176,7 @@ bail:
        return err;
 }
-int ocfs2_permission(struct inode *inode, int mask, struct nameidata *nd)
+int ocfs2_permission(struct inode *inode, int mask)
 {
        int ret;
diff --git a/fs/ocfs2/file.h b/fs/ocfs2/file.h
index 048ddcaf5c80..1e27b4d017ea 100644
--- a/fs/ocfs2/file.h
+++ b/fs/ocfs2/file.h
@@ -62,8 +62,7 @@ int ocfs2_lock_allocators(struct inode *inode, struct ocfs2_dinode *di,
 int ocfs2_setattr(struct dentry *dentry, struct iattr *attr);
 int ocfs2_getattr(struct vfsmount *mnt, struct dentry *dentry,
                  struct kstat *stat);
-int ocfs2_permission(struct inode *inode, int mask,
+int ocfs2_permission(struct inode *inode, int mask);
-                     struct nameidata *nd);
 int ocfs2_should_update_atime(struct inode *inode,
                              struct vfsmount *vfsmnt);
diff --git a/fs/ocfs2/super.c b/fs/ocfs2/super.c
index ccecfe5094fa..2560b33889aa 100644
--- a/fs/ocfs2/super.c
+++ b/fs/ocfs2/super.c
@@ -1118,7 +1118,7 @@ bail:
        return status;
 }
-static void ocfs2_inode_init_once(struct kmem_cache *cachep, void *data)
+static void ocfs2_inode_init_once(void *data)
 {
        struct ocfs2_inode_info *oi = data;
diff --git a/fs/omfs/Makefile b/fs/omfs/Makefile
new file mode 100644
index 000000000000..8b82b63f1129
--- /dev/null
+++ b/fs/omfs/Makefile
@@ -0,0 +1,4 @@
+obj-$(CONFIG_OMFS_FS) += omfs.o
+omfs-y := bitmap.o dir.o file.o inode.o
diff --git a/fs/omfs/bitmap.c b/fs/omfs/bitmap.c
new file mode 100644
index 000000000000..dc75f22be3f2
--- /dev/null
+++ b/fs/omfs/bitmap.c
@@ -0,0 +1,192 @@
+#include <linux/kernel.h>
+#include <linux/fs.h>
+#include <linux/buffer_head.h>
+#include <asm/div64.h>
+#include "omfs.h"
+unsigned long omfs_count_free(struct super_block *sb)
+{
+        unsigned int i;
+        unsigned long sum = 0;
+        struct omfs_sb_info *sbi = OMFS_SB(sb);
+        int nbits = sb->s_blocksize * 8;
+        for (i = 0; i < sbi->s_imap_size; i++)
+                sum += nbits - bitmap_weight(sbi->s_imap[i], nbits);
+        return sum;
+}
+/*
+ *  Counts the run of zero bits starting at bit up to max.
+ *  It handles the case where a run might spill over a buffer.
+ *  Called with bitmap lock.
+ */
+static int count_run(unsigned long **addr, int nbits,
+                int addrlen, int bit, int max)
+{
+        int count = 0;
+        int x;
+        for (; addrlen > 0; addrlen--, addr++) {
+                x = find_next_bit(*addr, nbits, bit);
+                count += x - bit;
+                if (x < nbits || count > max)
+                        return min(count, max);
+                bit = 0;
+        }
+        return min(count, max);
+}
+/*
+ * Sets or clears the run of count bits starting with bit.
+ * Called with bitmap lock.
+ */
+static int set_run(struct super_block *sb, int map,
+                int nbits, int bit, int count, int set)
+{
+        int i;
+        int err;
+        struct buffer_head *bh;
+        struct omfs_sb_info *sbi = OMFS_SB(sb);
+        err = -ENOMEM;
+        bh = sb_bread(sb, clus_to_blk(sbi, sbi->s_bitmap_ino) + map);
+        if (!bh)
+                goto out;
+        for (i = 0; i < count; i++, bit++) {
+                if (bit >= nbits) {
+                        bit = 0;
+                        map++;
+                        mark_buffer_dirty(bh);
+                        brelse(bh);
+                        bh = sb_bread(sb,
+                                clus_to_blk(sbi, sbi->s_bitmap_ino) + map);
+                        if (!bh)
+                                goto out;
+                }
+                if (set) {
+                        set_bit(bit, sbi->s_imap[map]);
+                        set_bit(bit, (long *) bh->b_data);
+                } else {
+                        clear_bit(bit, sbi->s_imap[map]);
+                        clear_bit(bit, (long *) bh->b_data);
+                }
+        }
+        mark_buffer_dirty(bh);
+        brelse(bh);
+        err = 0;
+out:
+        return err;
+}
+/*
+ * Tries to allocate exactly one block.  Returns true if sucessful.
+ */
+int omfs_allocate_block(struct super_block *sb, u64 block)
+{
+        struct buffer_head *bh;
+        struct omfs_sb_info *sbi = OMFS_SB(sb);
+        int bits_per_entry = 8 * sb->s_blocksize;
+        int map, bit;
+        int ret = 0;
+        u64 tmp;
+        tmp = block;
+        bit = do_div(tmp, bits_per_entry);
+        map = tmp;
+        mutex_lock(&sbi->s_bitmap_lock);
+        if (map >= sbi->s_imap_size || test_and_set_bit(bit, sbi->s_imap[map]))
+                goto out;
+        if (sbi->s_bitmap_ino > 0) {
+                bh = sb_bread(sb, clus_to_blk(sbi, sbi->s_bitmap_ino) + map);
+                if (!bh)
+                        goto out;
+                set_bit(bit, (long *) bh->b_data);
+                mark_buffer_dirty(bh);
+                brelse(bh);
+        }
+        ret = 1;
+out:
+        mutex_unlock(&sbi->s_bitmap_lock);
+        return ret;
+}
+/*
+ *  Tries to allocate a set of blocks.  The request size depends on the
+ *  type: for inodes, we must allocate sbi->s_mirrors blocks, and for file
+ *  blocks, we try to allocate sbi->s_clustersize, but can always get away
+ *  with just one block.
+ */
+int omfs_allocate_range(struct super_block *sb,
+                        int min_request,
+                        int max_request,
+                        u64 *return_block,
+                        int *return_size)
+{
+        struct omfs_sb_info *sbi = OMFS_SB(sb);
+        int bits_per_entry = 8 * sb->s_blocksize;
+        int ret = 0;
+        int i, run, bit;
+        mutex_lock(&sbi->s_bitmap_lock);
+        for (i = 0; i < sbi->s_imap_size; i++) {
+                bit = 0;
+                while (bit < bits_per_entry) {
+                        bit = find_next_zero_bit(sbi->s_imap[i], bits_per_entry,
+                                bit);
+                        if (bit == bits_per_entry)
+                                break;
+                        run = count_run(&sbi->s_imap[i], bits_per_entry,
+                                sbi->s_imap_size-i, bit, max_request);
+                        if (run >= min_request)
+                                goto found;
+                        bit += run;
+                }
+        }
+        ret = -ENOSPC;
+        goto out;
+found:
+        *return_block = i * bits_per_entry + bit;
+        *return_size = run;
+        ret = set_run(sb, i, bits_per_entry, bit, run, 1);
+out:
+        mutex_unlock(&sbi->s_bitmap_lock);
+        return ret;
+}
+/*
+ * Clears count bits starting at a given block.
+ */
+int omfs_clear_range(struct super_block *sb, u64 block, int count)
+{
+        struct omfs_sb_info *sbi = OMFS_SB(sb);
+        int bits_per_entry = 8 * sb->s_blocksize;
+        u64 tmp;
+        int map, bit, ret;
+        tmp = block;
+        bit = do_div(tmp, bits_per_entry);
+        map = tmp;
+        if (map >= sbi->s_imap_size)
+                return 0;
+        mutex_lock(&sbi->s_bitmap_lock);
+        ret = set_run(sb, map, bits_per_entry, bit, count, 0);
+        mutex_unlock(&sbi->s_bitmap_lock);
+        return ret;
+}
diff --git a/fs/omfs/dir.c b/fs/omfs/dir.c
new file mode 100644
index 000000000000..05a5bc31e4bd
--- /dev/null
+++ b/fs/omfs/dir.c
@@ -0,0 +1,504 @@
+/*
+ * OMFS (as used by RIO Karma) directory operations.
+ * Copyright (C) 2005 Bob Copeland <me@bobcopeland.com>
+ * Released under GPL v2.
+ */
+#include <linux/fs.h>
+#include <linux/ctype.h>
+#include <linux/buffer_head.h>
+#include "omfs.h"
+static int omfs_hash(const char *name, int namelen, int mod)
+{
+        int i, hash = 0;
+        for (i = 0; i < namelen; i++)
+                hash ^= tolower(name[i]) << (i % 24);
+        return hash % mod;
+}
+/*
+ * Finds the bucket for a given name and reads the containing block;
+ * *ofs is set to the offset of the first list entry.
+ */
+static struct buffer_head *omfs_get_bucket(struct inode *dir,
+                const char *name, int namelen, int *ofs)
+{
+        int nbuckets = (dir->i_size - OMFS_DIR_START)/8;
+        int block = clus_to_blk(OMFS_SB(dir->i_sb), dir->i_ino);
+        int bucket = omfs_hash(name, namelen, nbuckets);
+        *ofs = OMFS_DIR_START + bucket * 8;
+        return sb_bread(dir->i_sb, block);
+}
+static struct buffer_head *omfs_scan_list(struct inode *dir, u64 block,
+                                const char *name, int namelen,
+                                u64 *prev_block)
+{
+        struct buffer_head *bh;
+        struct omfs_inode *oi;
+        int err = -ENOENT;
+        *prev_block = ~0;
+        while (block != ~0) {
+                bh = sb_bread(dir->i_sb,
+                        clus_to_blk(OMFS_SB(dir->i_sb), block));
+                if (!bh) {
+                        err = -EIO;
+                        goto err;
+                }
+                oi = (struct omfs_inode *) bh->b_data;
+                if (omfs_is_bad(OMFS_SB(dir->i_sb), &oi->i_head, block)) {
+                        brelse(bh);
+                        goto err;
+                }
+                if (strncmp(oi->i_name, name, namelen) == 0)
+                        return bh;
+                *prev_block = block;
+                block = be64_to_cpu(oi->i_sibling);
+                brelse(bh);
+        }
+err:
+        return ERR_PTR(err);
+}
+static struct buffer_head *omfs_find_entry(struct inode *dir,
+                                           const char *name, int namelen)
+{
+        struct buffer_head *bh;
+        int ofs;
+        u64 block, dummy;
+        bh = omfs_get_bucket(dir, name, namelen, &ofs);
+        if (!bh)
+                return ERR_PTR(-EIO);
+        block = be64_to_cpu(*((__be64 *) &bh->b_data[ofs]));
+        brelse(bh);
+        return omfs_scan_list(dir, block, name, namelen, &dummy);
+}
+int omfs_make_empty(struct inode *inode, struct super_block *sb)
+{
+        struct omfs_sb_info *sbi = OMFS_SB(sb);
+        int block = clus_to_blk(sbi, inode->i_ino);
+        struct buffer_head *bh;
+        struct omfs_inode *oi;
+        bh = sb_bread(sb, block);
+        if (!bh)
+                return -ENOMEM;
+        memset(bh->b_data, 0, sizeof(struct omfs_inode));
+        if (inode->i_mode & S_IFDIR) {
+                memset(&bh->b_data[OMFS_DIR_START], 0xff,
+                        sbi->s_sys_blocksize - OMFS_DIR_START);
+        } else
+                omfs_make_empty_table(bh, OMFS_EXTENT_START);
+        oi = (struct omfs_inode *) bh->b_data;
+        oi->i_head.h_self = cpu_to_be64(inode->i_ino);
+        oi->i_sibling = ~0ULL;
+        mark_buffer_dirty(bh);
+        brelse(bh);
+        return 0;
+}
+static int omfs_add_link(struct dentry *dentry, struct inode *inode)
+{
+        struct inode *dir = dentry->d_parent->d_inode;
+        const char *name = dentry->d_name.name;
+        int namelen = dentry->d_name.len;
+        struct omfs_inode *oi;
+        struct buffer_head *bh;
+        u64 block;
+        __be64 *entry;
+        int ofs;
+        /* just prepend to head of queue in proper bucket */
+        bh = omfs_get_bucket(dir, name, namelen, &ofs);
+        if (!bh)
+                goto out;
+        entry = (__be64 *) &bh->b_data[ofs];
+        block = be64_to_cpu(*entry);
+        *entry = cpu_to_be64(inode->i_ino);
+        mark_buffer_dirty(bh);
+        brelse(bh);
+        /* now set the sibling and parent pointers on the new inode */
+        bh = sb_bread(dir->i_sb, clus_to_blk(OMFS_SB(dir->i_sb), inode->i_ino));
+        if (!bh)
+                goto out;
+        oi = (struct omfs_inode *) bh->b_data;
+        memcpy(oi->i_name, name, namelen);
+        memset(oi->i_name + namelen, 0, OMFS_NAMELEN - namelen);
+        oi->i_sibling = cpu_to_be64(block);
+        oi->i_parent = cpu_to_be64(dir->i_ino);
+        mark_buffer_dirty(bh);
+        brelse(bh);
+        dir->i_ctime = CURRENT_TIME_SEC;
+        /* mark affected inodes dirty to rebuild checksums */
+        mark_inode_dirty(dir);
+        mark_inode_dirty(inode);
+        return 0;
+out:
+        return -ENOMEM;
+}
+static int omfs_delete_entry(struct dentry *dentry)
+{
+        struct inode *dir = dentry->d_parent->d_inode;
+        struct inode *dirty;
+        const char *name = dentry->d_name.name;
+        int namelen = dentry->d_name.len;
+        struct omfs_inode *oi;
+        struct buffer_head *bh, *bh2;
+        __be64 *entry, next;
+        u64 block, prev;
+        int ofs;
+        int err = -ENOMEM;
+        /* delete the proper node in the bucket's linked list */
+        bh = omfs_get_bucket(dir, name, namelen, &ofs);
+        if (!bh)
+                goto out;
+        entry = (__be64 *) &bh->b_data[ofs];
+        block = be64_to_cpu(*entry);
+        bh2 = omfs_scan_list(dir, block, name, namelen, &prev);
+        if (IS_ERR(bh2)) {
+                err = PTR_ERR(bh2);
+                goto out_free_bh;
+        }
+        oi = (struct omfs_inode *) bh2->b_data;
+        next = oi->i_sibling;
+        brelse(bh2);
+        if (prev != ~0) {
+                /* found in middle of list, get list ptr */
+                brelse(bh);
+                bh = sb_bread(dir->i_sb,
+                        clus_to_blk(OMFS_SB(dir->i_sb), prev));
+                if (!bh)
+                        goto out;
+                oi = (struct omfs_inode *) bh->b_data;
+                entry = &oi->i_sibling;
+        }
+        *entry = next;
+        mark_buffer_dirty(bh);
+        if (prev != ~0) {
+                dirty = omfs_iget(dir->i_sb, prev);
+                if (!IS_ERR(dirty)) {
+                        mark_inode_dirty(dirty);
+                        iput(dirty);
+                }
+        }
+        err = 0;
+out_free_bh:
+        brelse(bh);
+out:
+        return err;
+}
+static int omfs_dir_is_empty(struct inode *inode)
+{
+        int nbuckets = (inode->i_size - OMFS_DIR_START) / 8;
+        struct buffer_head *bh;
+        u64 *ptr;
+        int i;
+        bh = sb_bread(inode->i_sb, clus_to_blk(OMFS_SB(inode->i_sb),
+                        inode->i_ino));
+        if (!bh)
+                return 0;
+        ptr = (u64 *) &bh->b_data[OMFS_DIR_START];
+        for (i = 0; i < nbuckets; i++, ptr++)
+                if (*ptr != ~0)
+                        break;
+        brelse(bh);
+        return *ptr != ~0;
+}
+static int omfs_unlink(struct inode *dir, struct dentry *dentry)
+{
+        int ret;
+        struct inode *inode = dentry->d_inode;
+        ret = omfs_delete_entry(dentry);
+        if (ret)
+                goto end_unlink;
+        inode_dec_link_count(inode);
+        mark_inode_dirty(dir);
+end_unlink:
+        return ret;
+}
+static int omfs_rmdir(struct inode *dir, struct dentry *dentry)
+{
+        int err = -ENOTEMPTY;
+        struct inode *inode = dentry->d_inode;
+        if (omfs_dir_is_empty(inode)) {
+                err = omfs_unlink(dir, dentry);
+                if (!err)
+                        inode_dec_link_count(inode);
+        }
+        return err;
+}
+static int omfs_add_node(struct inode *dir, struct dentry *dentry, int mode)
+{
+        int err;
+        struct inode *inode = omfs_new_inode(dir, mode);
+        if (IS_ERR(inode))
+                return PTR_ERR(inode);
+        err = omfs_make_empty(inode, dir->i_sb);
+        if (err)
+                goto out_free_inode;
+        err = omfs_add_link(dentry, inode);
+        if (err)
+                goto out_free_inode;
+        d_instantiate(dentry, inode);
+        return 0;
+out_free_inode:
+        iput(inode);
+        return err;
+}
+static int omfs_mkdir(struct inode *dir, struct dentry *dentry, int mode)
+{
+        return omfs_add_node(dir, dentry, mode | S_IFDIR);
+}
+static int omfs_create(struct inode *dir, struct dentry *dentry, int mode,
+                struct nameidata *nd)
+{
+        return omfs_add_node(dir, dentry, mode | S_IFREG);
+}
+static struct dentry *omfs_lookup(struct inode *dir, struct dentry *dentry,
+                                  struct nameidata *nd)
+{
+        struct buffer_head *bh;
+        struct inode *inode = NULL;
+        if (dentry->d_name.len > OMFS_NAMELEN)
+                return ERR_PTR(-ENAMETOOLONG);
+        bh = omfs_find_entry(dir, dentry->d_name.name, dentry->d_name.len);
+        if (!IS_ERR(bh)) {
+                struct omfs_inode *oi = (struct omfs_inode *)bh->b_data;
+                ino_t ino = be64_to_cpu(oi->i_head.h_self);
+                brelse(bh);
+                inode = omfs_iget(dir->i_sb, ino);
+                if (IS_ERR(inode))
+                        return ERR_CAST(inode);
+        }
+        d_add(dentry, inode);
+        return NULL;
+}
+/* sanity check block's self pointer */
+int omfs_is_bad(struct omfs_sb_info *sbi, struct omfs_header *header,
+        u64 fsblock)
+{
+        int is_bad;
+        u64 ino = be64_to_cpu(header->h_self);
+        is_bad = ((ino != fsblock) || (ino < sbi->s_root_ino) ||
+                (ino > sbi->s_num_blocks));
+        if (is_bad)
+                printk(KERN_WARNING "omfs: bad hash chain detected\n");
+        return is_bad;
+}
+static int omfs_fill_chain(struct file *filp, void *dirent, filldir_t filldir,
+                u64 fsblock, int hindex)
+{
+        struct inode *dir = filp->f_dentry->d_inode;
+        struct buffer_head *bh;
+        struct omfs_inode *oi;
+        u64 self;
+        int res = 0;
+        unsigned char d_type;
+        /* follow chain in this bucket */
+        while (fsblock != ~0) {
+                bh = sb_bread(dir->i_sb, clus_to_blk(OMFS_SB(dir->i_sb),
+                                fsblock));
+                if (!bh)
+                        goto out;
+                oi = (struct omfs_inode *) bh->b_data;
+                if (omfs_is_bad(OMFS_SB(dir->i_sb), &oi->i_head, fsblock)) {
+                        brelse(bh);
+                        goto out;
+                }
+                self = fsblock;
+                fsblock = be64_to_cpu(oi->i_sibling);
+                /* skip visited nodes */
+                if (hindex) {
+                        hindex--;
+                        brelse(bh);
+                        continue;
+                }
+                d_type = (oi->i_type == OMFS_DIR) ? DT_DIR : DT_REG;
+                res = filldir(dirent, oi->i_name, strnlen(oi->i_name,
+                        OMFS_NAMELEN), filp->f_pos, self, d_type);
+                if (res == 0)
+                        filp->f_pos++;
+                brelse(bh);
+        }
+out:
+        return res;
+}
+static int omfs_rename(struct inode *old_dir, struct dentry *old_dentry,
+                struct inode *new_dir, struct dentry *new_dentry)
+{
+        struct inode *new_inode = new_dentry->d_inode;
+        struct inode *old_inode = old_dentry->d_inode;
+        struct buffer_head *bh;
+        int is_dir;
+        int err;
+        is_dir = S_ISDIR(old_inode->i_mode);
+        if (new_inode) {
+                /* overwriting existing file/dir */
+                err = -ENOTEMPTY;
+                if (is_dir && !omfs_dir_is_empty(new_inode))
+                        goto out;
+                err = -ENOENT;
+                bh = omfs_find_entry(new_dir, new_dentry->d_name.name,
+                        new_dentry->d_name.len);
+                if (IS_ERR(bh))
+                        goto out;
+                brelse(bh);
+                err = omfs_unlink(new_dir, new_dentry);
+                if (err)
+                        goto out;
+        }
+        /* since omfs locates files by name, we need to unlink _before_
+         * adding the new link or we won't find the old one */
+        inode_inc_link_count(old_inode);
+        err = omfs_unlink(old_dir, old_dentry);
+        if (err) {
+                inode_dec_link_count(old_inode);
+                goto out;
+        }
+        err = omfs_add_link(new_dentry, old_inode);
+        if (err)
+                goto out;
+        old_inode->i_ctime = CURRENT_TIME_SEC;
+out:
+        return err;
+}
+static int omfs_readdir(struct file *filp, void *dirent, filldir_t filldir)
+{
+        struct inode *dir = filp->f_dentry->d_inode;
+        struct buffer_head *bh;
+        loff_t offset, res;
+        unsigned int hchain, hindex;
+        int nbuckets;
+        u64 fsblock;
+        int ret = -EINVAL;
+        if (filp->f_pos >> 32)
+                goto success;
+        switch ((unsigned long) filp->f_pos) {
+        case 0:
+                if (filldir(dirent, ".", 1, 0, dir->i_ino, DT_DIR) < 0)
+                        goto success;
+                filp->f_pos++;
+                /* fall through */
+        case 1:
+                if (filldir(dirent, "..", 2, 1,
+                    parent_ino(filp->f_dentry), DT_DIR) < 0)
+                        goto success;
+                filp->f_pos = 1 << 20;
+                /* fall through */
+        }
+        nbuckets = (dir->i_size - OMFS_DIR_START) / 8;
+        /* high 12 bits store bucket + 1 and low 20 bits store hash index */
+        hchain = (filp->f_pos >> 20) - 1;
+        hindex = filp->f_pos & 0xfffff;
+        bh = sb_bread(dir->i_sb, clus_to_blk(OMFS_SB(dir->i_sb), dir->i_ino));
+        if (!bh)
+                goto out;
+        offset = OMFS_DIR_START + hchain * 8;
+        for (; hchain < nbuckets; hchain++, offset += 8) {
+                fsblock = be64_to_cpu(*((__be64 *) &bh->b_data[offset]));
+                res = omfs_fill_chain(filp, dirent, filldir, fsblock, hindex);
+                hindex = 0;
+                if (res < 0)
+                        break;
+                filp->f_pos = (hchain+2) << 20;
+        }
+        brelse(bh);
+success:
+        ret = 0;
+out:
+        return ret;
+}
+struct inode_operations omfs_dir_inops = {
+        .lookup = omfs_lookup,
+        .mkdir = omfs_mkdir,
+        .rename = omfs_rename,
+        .create = omfs_create,
+        .unlink = omfs_unlink,
+        .rmdir = omfs_rmdir,
+};
+struct file_operations omfs_dir_operations = {
+        .read = generic_read_dir,
+        .readdir = omfs_readdir,
+};
diff --git a/fs/omfs/file.c b/fs/omfs/file.c
new file mode 100644
index 000000000000..66e01fae4384
--- /dev/null
+++ b/fs/omfs/file.c
@@ -0,0 +1,346 @@
+/*
+ * OMFS (as used by RIO Karma) file operations.
+ * Copyright (C) 2005 Bob Copeland <me@bobcopeland.com>
+ * Released under GPL v2.
+ */
+#include <linux/version.h>
+#include <linux/module.h>
+#include <linux/fs.h>
+#include <linux/buffer_head.h>
+#include <linux/mpage.h>
+#include "omfs.h"
+static int omfs_sync_file(struct file *file, struct dentry *dentry,
+                int datasync)
+{
+        struct inode *inode = dentry->d_inode;
+        int err;
+        err = sync_mapping_buffers(inode->i_mapping);
+        if (!(inode->i_state & I_DIRTY))
+                return err;
+        if (datasync && !(inode->i_state & I_DIRTY_DATASYNC))
+                return err;
+        err |= omfs_sync_inode(inode);
+        return err ? -EIO : 0;
+}
+void omfs_make_empty_table(struct buffer_head *bh, int offset)
+{
+        struct omfs_extent *oe = (struct omfs_extent *) &bh->b_data[offset];
+        oe->e_next = ~0ULL;
+        oe->e_extent_count = cpu_to_be32(1),
+        oe->e_fill = cpu_to_be32(0x22),
+        oe->e_entry.e_cluster = ~0ULL;
+        oe->e_entry.e_blocks = ~0ULL;
+}
+int omfs_shrink_inode(struct inode *inode)
+{
+        struct omfs_sb_info *sbi = OMFS_SB(inode->i_sb);
+        struct omfs_extent *oe;
+        struct omfs_extent_entry *entry;
+        struct buffer_head *bh;
+        u64 next, last;
+        u32 extent_count;
+        int ret;
+        /* traverse extent table, freeing each entry that is greater
+         * than inode->i_size;
+         */
+        next = inode->i_ino;
+        /* only support truncate -> 0 for now */
+        ret = -EIO;
+        if (inode->i_size != 0)
+                goto out;
+        bh = sb_bread(inode->i_sb, clus_to_blk(sbi, next));
+        if (!bh)
+                goto out;
+        oe = (struct omfs_extent *)(&bh->b_data[OMFS_EXTENT_START]);
+        for (;;) {
+                if (omfs_is_bad(sbi, (struct omfs_header *) bh->b_data, next)) {
+                        brelse(bh);
+                        goto out;
+                }
+                extent_count = be32_to_cpu(oe->e_extent_count);
+                last = next;
+                next = be64_to_cpu(oe->e_next);
+                entry = &oe->e_entry;
+                /* ignore last entry as it is the terminator */
+                for (; extent_count > 1; extent_count--) {
+                        u64 start, count;
+                        start = be64_to_cpu(entry->e_cluster);
+                        count = be64_to_cpu(entry->e_blocks);
+                        omfs_clear_range(inode->i_sb, start, (int) count);
+                        entry++;
+                }
+                omfs_make_empty_table(bh, (char *) oe - bh->b_data);
+                mark_buffer_dirty(bh);
+                brelse(bh);
+                if (last != inode->i_ino)
+                        omfs_clear_range(inode->i_sb, last, sbi->s_mirrors);
+                if (next == ~0)
+                        break;
+                bh = sb_bread(inode->i_sb, clus_to_blk(sbi, next));
+                if (!bh)
+                        goto out;
+                oe = (struct omfs_extent *) (&bh->b_data[OMFS_EXTENT_CONT]);
+        }
+        ret = 0;
+out:
+        return ret;
+}
+static void omfs_truncate(struct inode *inode)
+{
+        omfs_shrink_inode(inode);
+        mark_inode_dirty(inode);
+}
+/*
+ * Add new blocks to the current extent, or create new entries/continuations
+ * as necessary.
+ */
+static int omfs_grow_extent(struct inode *inode, struct omfs_extent *oe,
+                        u64 *ret_block)
+{
+        struct omfs_extent_entry *terminator;
+        struct omfs_extent_entry *entry = &oe->e_entry;
+        struct omfs_sb_info *sbi = OMFS_SB(inode->i_sb);
+        u32 extent_count = be32_to_cpu(oe->e_extent_count);
+        u64 new_block = 0;
+        u32 max_count;
+        int new_count;
+        int ret = 0;
+        /* reached the end of the extent table with no blocks mapped.
+         * there are three possibilities for adding: grow last extent,
+         * add a new extent to the current extent table, and add a
+         * continuation inode.  in last two cases need an allocator for
+         * sbi->s_cluster_size
+         */
+        /* TODO: handle holes */
+        /* should always have a terminator */
+        if (extent_count < 1)
+                return -EIO;
+        /* trivially grow current extent, if next block is not taken */
+        terminator = entry + extent_count - 1;
+        if (extent_count > 1) {
+                entry = terminator-1;
+                new_block = be64_to_cpu(entry->e_cluster) +
+                        be64_to_cpu(entry->e_blocks);
+                if (omfs_allocate_block(inode->i_sb, new_block)) {
+                        entry->e_blocks =
+                                cpu_to_be64(be64_to_cpu(entry->e_blocks) + 1);
+                        terminator->e_blocks = ~(cpu_to_be64(
+                                be64_to_cpu(~terminator->e_blocks) + 1));
+                        goto out;
+                }
+        }
+        max_count = (sbi->s_sys_blocksize - OMFS_EXTENT_START -
+                sizeof(struct omfs_extent)) /
+                sizeof(struct omfs_extent_entry) + 1;
+        /* TODO: add a continuation block here */
+        if (be32_to_cpu(oe->e_extent_count) > max_count-1)
+                return -EIO;
+        /* try to allocate a new cluster */
+        ret = omfs_allocate_range(inode->i_sb, 1, sbi->s_clustersize,
+                &new_block, &new_count);
+        if (ret)
+                goto out_fail;
+        /* copy terminator down an entry */
+        entry = terminator;
+        terminator++;
+        memcpy(terminator, entry, sizeof(struct omfs_extent_entry));
+        entry->e_cluster = cpu_to_be64(new_block);
+        entry->e_blocks = cpu_to_be64((u64) new_count);
+        terminator->e_blocks = ~(cpu_to_be64(
+                be64_to_cpu(~terminator->e_blocks) + (u64) new_count));
+        /* write in new entry */
+        oe->e_extent_count = cpu_to_be32(1 + be32_to_cpu(oe->e_extent_count));
+out:
+        *ret_block = new_block;
+out_fail:
+        return ret;
+}
+/*
+ * Scans across the directory table for a given file block number.
+ * If block not found, return 0.
+ */
+static sector_t find_block(struct inode *inode, struct omfs_extent_entry *ent,
+                        sector_t block, int count, int *left)
+{
+        /* count > 1 because of terminator */
+        sector_t searched = 0;
+        for (; count > 1; count--) {
+                int numblocks = clus_to_blk(OMFS_SB(inode->i_sb),
+                        be64_to_cpu(ent->e_blocks));
+                if (block >= searched  &&
+                    block < searched + numblocks) {
+                        /*
+                         * found it at cluster + (block - searched)
+                         * numblocks - (block - searched) is remainder
+                         */
+                        *left = numblocks - (block - searched);
+                        return clus_to_blk(OMFS_SB(inode->i_sb),
+                                be64_to_cpu(ent->e_cluster)) +
+                                block - searched;
+                }
+                searched += numblocks;
+                ent++;
+        }
+        return 0;
+}
+static int omfs_get_block(struct inode *inode, sector_t block,
+                          struct buffer_head *bh_result, int create)
+{
+        struct buffer_head *bh;
+        sector_t next, offset;
+        int ret;
+        u64 new_block;
+        int extent_count;
+        struct omfs_extent *oe;
+        struct omfs_extent_entry *entry;
+        struct omfs_sb_info *sbi = OMFS_SB(inode->i_sb);
+        int max_blocks = bh_result->b_size >> inode->i_blkbits;
+        int remain;
+        ret = -EIO;
+        bh = sb_bread(inode->i_sb, clus_to_blk(sbi, inode->i_ino));
+        if (!bh)
+                goto out;
+        oe = (struct omfs_extent *)(&bh->b_data[OMFS_EXTENT_START]);
+        next = inode->i_ino;
+        for (;;) {
+                if (omfs_is_bad(sbi, (struct omfs_header *) bh->b_data, next))
+                        goto out_brelse;
+                extent_count = be32_to_cpu(oe->e_extent_count);
+                next = be64_to_cpu(oe->e_next);
+                entry = &oe->e_entry;
+                offset = find_block(inode, entry, block, extent_count, &remain);
+                if (offset > 0) {
+                        ret = 0;
+                        map_bh(bh_result, inode->i_sb, offset);
+                        if (remain > max_blocks)
+                                remain = max_blocks;
+                        bh_result->b_size = (remain << inode->i_blkbits);
+                        goto out_brelse;
+                }
+                if (next == ~0)
+                        break;
+                brelse(bh);
+                bh = sb_bread(inode->i_sb, clus_to_blk(sbi, next));
+                if (!bh)
+                        goto out;
+                oe = (struct omfs_extent *) (&bh->b_data[OMFS_EXTENT_CONT]);
+        }
+        if (create) {
+                ret = omfs_grow_extent(inode, oe, &new_block);
+                if (ret == 0) {
+                        mark_buffer_dirty(bh);
+                        mark_inode_dirty(inode);
+                        map_bh(bh_result, inode->i_sb,
+                                        clus_to_blk(sbi, new_block));
+                }
+        }
+out_brelse:
+        brelse(bh);
+out:
+        return ret;
+}
+static int omfs_readpage(struct file *file, struct page *page)
+{
+        return block_read_full_page(page, omfs_get_block);
+}
+static int omfs_readpages(struct file *file, struct address_space *mapping,
+                struct list_head *pages, unsigned nr_pages)
+{
+        return mpage_readpages(mapping, pages, nr_pages, omfs_get_block);
+}
+static int omfs_writepage(struct page *page, struct writeback_control *wbc)
+{
+        return block_write_full_page(page, omfs_get_block, wbc);
+}
+static int
+omfs_writepages(struct address_space *mapping, struct writeback_control *wbc)
+{
+        return mpage_writepages(mapping, wbc, omfs_get_block);
+}
+static int omfs_write_begin(struct file *file, struct address_space *mapping,
+                        loff_t pos, unsigned len, unsigned flags,
+                        struct page **pagep, void **fsdata)
+{
+        *pagep = NULL;
+        return block_write_begin(file, mapping, pos, len, flags,
+                                pagep, fsdata, omfs_get_block);
+}
+static sector_t omfs_bmap(struct address_space *mapping, sector_t block)
+{
+        return generic_block_bmap(mapping, block, omfs_get_block);
+}
+struct file_operations omfs_file_operations = {
+        .llseek = generic_file_llseek,
+        .read = do_sync_read,
+        .write = do_sync_write,
+        .aio_read = generic_file_aio_read,
+        .aio_write = generic_file_aio_write,
+        .mmap = generic_file_mmap,
+        .fsync = omfs_sync_file,
+        .splice_read = generic_file_splice_read,
+};
+struct inode_operations omfs_file_inops = {
+        .truncate = omfs_truncate
+};
+struct address_space_operations omfs_aops = {
+        .readpage = omfs_readpage,
+        .readpages = omfs_readpages,
+        .writepage = omfs_writepage,
+        .writepages = omfs_writepages,
+        .sync_page = block_sync_page,
+        .write_begin = omfs_write_begin,
+        .write_end = generic_write_end,
+        .bmap = omfs_bmap,
+};
diff --git a/fs/omfs/inode.c b/fs/omfs/inode.c
new file mode 100644
index 000000000000..d865f5535436
--- /dev/null
+++ b/fs/omfs/inode.c
@@ -0,0 +1,553 @@
+/*
+ * Optimized MPEG FS - inode and super operations.
+ * Copyright (C) 2006 Bob Copeland <me@bobcopeland.com>
+ * Released under GPL v2.
+ */
+#include <linux/version.h>
+#include <linux/module.h>
+#include <linux/sched.h>
+#include <linux/fs.h>
+#include <linux/vfs.h>
+#include <linux/parser.h>
+#include <linux/buffer_head.h>
+#include <linux/vmalloc.h>
+#include <linux/crc-itu-t.h>
+#include "omfs.h"
+MODULE_AUTHOR("Bob Copeland <me@bobcopeland.com>");
+MODULE_DESCRIPTION("OMFS (ReplayTV/Karma) Filesystem for Linux");
+MODULE_LICENSE("GPL");
+struct inode *omfs_new_inode(struct inode *dir, int mode)
+{
+        struct inode *inode;
+        u64 new_block;
+        int err;
+        int len;
+        struct omfs_sb_info *sbi = OMFS_SB(dir->i_sb);
+        inode = new_inode(dir->i_sb);
+        if (!inode)
+                return ERR_PTR(-ENOMEM);
+        err = omfs_allocate_range(dir->i_sb, sbi->s_mirrors, sbi->s_mirrors,
+                        &new_block, &len);
+        if (err)
+                goto fail;
+        inode->i_ino = new_block;
+        inode->i_mode = mode;
+        inode->i_uid = current->fsuid;
+        inode->i_gid = current->fsgid;
+        inode->i_blocks = 0;
+        inode->i_mapping->a_ops = &omfs_aops;
+        inode->i_atime = inode->i_mtime = inode->i_ctime = CURRENT_TIME;
+        switch (mode & S_IFMT) {
+        case S_IFDIR:
+                inode->i_op = &omfs_dir_inops;
+                inode->i_fop = &omfs_dir_operations;
+                inode->i_size = sbi->s_sys_blocksize;
+                inc_nlink(inode);
+                break;
+        case S_IFREG:
+                inode->i_op = &omfs_file_inops;
+                inode->i_fop = &omfs_file_operations;
+                inode->i_size = 0;
+                break;
+        }
+        insert_inode_hash(inode);
+        mark_inode_dirty(inode);
+        return inode;
+fail:
+        make_bad_inode(inode);
+        iput(inode);
+        return ERR_PTR(err);
+}
+/*
+ * Update the header checksums for a dirty inode based on its contents.
+ * Caller is expected to hold the buffer head underlying oi and mark it
+ * dirty.
+ */
+static void omfs_update_checksums(struct omfs_inode *oi)
+{
+        int xor, i, ofs = 0, count;
+        u16 crc = 0;
+        unsigned char *ptr = (unsigned char *) oi;
+        count = be32_to_cpu(oi->i_head.h_body_size);
+        ofs = sizeof(struct omfs_header);
+        crc = crc_itu_t(crc, ptr + ofs, count);
+        oi->i_head.h_crc = cpu_to_be16(crc);
+        xor = ptr[0];
+        for (i = 1; i < OMFS_XOR_COUNT; i++)
+                xor ^= ptr[i];
+        oi->i_head.h_check_xor = xor;
+}
+static int omfs_write_inode(struct inode *inode, int wait)
+{
+        struct omfs_inode *oi;
+        struct omfs_sb_info *sbi = OMFS_SB(inode->i_sb);
+        struct buffer_head *bh, *bh2;
+        unsigned int block;
+        u64 ctime;
+        int i;
+        int ret = -EIO;
+        int sync_failed = 0;
+        /* get current inode since we may have written sibling ptrs etc. */
+        block = clus_to_blk(sbi, inode->i_ino);
+        bh = sb_bread(inode->i_sb, block);
+        if (!bh)
+                goto out;
+        oi = (struct omfs_inode *) bh->b_data;
+        oi->i_head.h_self = cpu_to_be64(inode->i_ino);
+        if (S_ISDIR(inode->i_mode))
+                oi->i_type = OMFS_DIR;
+        else if (S_ISREG(inode->i_mode))
+                oi->i_type = OMFS_FILE;
+        else {
+                printk(KERN_WARNING "omfs: unknown file type: %d\n",
+                        inode->i_mode);
+                goto out_brelse;
+        }
+        oi->i_head.h_body_size = cpu_to_be32(sbi->s_sys_blocksize -
+                sizeof(struct omfs_header));
+        oi->i_head.h_version = 1;
+        oi->i_head.h_type = OMFS_INODE_NORMAL;
+        oi->i_head.h_magic = OMFS_IMAGIC;
+        oi->i_size = cpu_to_be64(inode->i_size);
+        ctime = inode->i_ctime.tv_sec * 1000LL +
+                ((inode->i_ctime.tv_nsec + 999)/1000);
+        oi->i_ctime = cpu_to_be64(ctime);
+        omfs_update_checksums(oi);
+        mark_buffer_dirty(bh);
+        if (wait) {
+                sync_dirty_buffer(bh);
+                if (buffer_req(bh) && !buffer_uptodate(bh))
+                        sync_failed = 1;
+        }
+        /* if mirroring writes, copy to next fsblock */
+        for (i = 1; i < sbi->s_mirrors; i++) {
+                bh2 = sb_bread(inode->i_sb, block + i *
+                        (sbi->s_blocksize / sbi->s_sys_blocksize));
+                if (!bh2)
+                        goto out_brelse;
+                memcpy(bh2->b_data, bh->b_data, bh->b_size);
+                mark_buffer_dirty(bh2);
+                if (wait) {
+                        sync_dirty_buffer(bh2);
+                        if (buffer_req(bh2) && !buffer_uptodate(bh2))
+                                sync_failed = 1;
+                }
+                brelse(bh2);
+        }
+        ret = (sync_failed) ? -EIO : 0;
+out_brelse:
+        brelse(bh);
+out:
+        return ret;
+}
+int omfs_sync_inode(struct inode *inode)
+{
+        return omfs_write_inode(inode, 1);
+}
+/*
+ * called when an entry is deleted, need to clear the bits in the
+ * bitmaps.
+ */
+static void omfs_delete_inode(struct inode *inode)
+{
+        truncate_inode_pages(&inode->i_data, 0);
+        if (S_ISREG(inode->i_mode)) {
+                inode->i_size = 0;
+                omfs_shrink_inode(inode);
+        }
+        omfs_clear_range(inode->i_sb, inode->i_ino, 2);
+        clear_inode(inode);
+}
+struct inode *omfs_iget(struct super_block *sb, ino_t ino)
+{
+        struct omfs_sb_info *sbi = OMFS_SB(sb);
+        struct omfs_inode *oi;
+        struct buffer_head *bh;
+        unsigned int block;
+        u64 ctime;
+        unsigned long nsecs;
+        struct inode *inode;
+        inode = iget_locked(sb, ino);
+        if (!inode)
+                return ERR_PTR(-ENOMEM);
+        if (!(inode->i_state & I_NEW))
+                return inode;
+        block = clus_to_blk(sbi, ino);
+        bh = sb_bread(inode->i_sb, block);
+        if (!bh)
+                goto iget_failed;
+        oi = (struct omfs_inode *)bh->b_data;
+        /* check self */
+        if (ino != be64_to_cpu(oi->i_head.h_self))
+                goto fail_bh;
+        inode->i_uid = sbi->s_uid;
+        inode->i_gid = sbi->s_gid;
+        ctime = be64_to_cpu(oi->i_ctime);
+        nsecs = do_div(ctime, 1000) * 1000L;
+        inode->i_atime.tv_sec = ctime;
+        inode->i_mtime.tv_sec = ctime;
+        inode->i_ctime.tv_sec = ctime;
+        inode->i_atime.tv_nsec = nsecs;
+        inode->i_mtime.tv_nsec = nsecs;
+        inode->i_ctime.tv_nsec = nsecs;
+        inode->i_mapping->a_ops = &omfs_aops;
+        switch (oi->i_type) {
+        case OMFS_DIR:
+                inode->i_mode = S_IFDIR | (S_IRWXUGO & ~sbi->s_dmask);
+                inode->i_op = &omfs_dir_inops;
+                inode->i_fop = &omfs_dir_operations;
+                inode->i_size = be32_to_cpu(oi->i_head.h_body_size) +
+                        sizeof(struct omfs_header);
+                inc_nlink(inode);
+                break;
+        case OMFS_FILE:
+                inode->i_mode = S_IFREG | (S_IRWXUGO & ~sbi->s_fmask);
+                inode->i_fop = &omfs_file_operations;
+                inode->i_size = be64_to_cpu(oi->i_size);
+                break;
+        }
+        brelse(bh);
+        unlock_new_inode(inode);
+        return inode;
+fail_bh:
+        brelse(bh);
+iget_failed:
+        iget_failed(inode);
+        return ERR_PTR(-EIO);
+}
+static void omfs_put_super(struct super_block *sb)
+{
+        struct omfs_sb_info *sbi = OMFS_SB(sb);
+        kfree(sbi->s_imap);
+        kfree(sbi);
+        sb->s_fs_info = NULL;
+}
+static int omfs_statfs(struct dentry *dentry, struct kstatfs *buf)
+{
+        struct super_block *s = dentry->d_sb;
+        struct omfs_sb_info *sbi = OMFS_SB(s);
+        buf->f_type = OMFS_MAGIC;
+        buf->f_bsize = sbi->s_blocksize;
+        buf->f_blocks = sbi->s_num_blocks;
+        buf->f_files = sbi->s_num_blocks;
+        buf->f_namelen = OMFS_NAMELEN;
+        buf->f_bfree = buf->f_bavail = buf->f_ffree =
+                omfs_count_free(s);
+        return 0;
+}
+static struct super_operations omfs_sops = {
+        .write_inode    = omfs_write_inode,
+        .delete_inode   = omfs_delete_inode,
+        .put_super      = omfs_put_super,
+        .statfs         = omfs_statfs,
+        .show_options   = generic_show_options,
+};
+/*
+ * For Rio Karma, there is an on-disk free bitmap whose location is
+ * stored in the root block.  For ReplayTV, there is no such free bitmap
+ * so we have to walk the tree.  Both inodes and file data are allocated
+ * from the same map.  This array can be big (300k) so we allocate
+ * in units of the blocksize.
+ */
+static int omfs_get_imap(struct super_block *sb)
+{
+        int bitmap_size;
+        int array_size;
+        int count;
+        struct omfs_sb_info *sbi = OMFS_SB(sb);
+        struct buffer_head *bh;
+        unsigned long **ptr;
+        sector_t block;
+        bitmap_size = DIV_ROUND_UP(sbi->s_num_blocks, 8);
+        array_size = DIV_ROUND_UP(bitmap_size, sb->s_blocksize);
+        if (sbi->s_bitmap_ino == ~0ULL)
+                goto out;
+        sbi->s_imap_size = array_size;
+        sbi->s_imap = kzalloc(array_size * sizeof(unsigned long *), GFP_KERNEL);
+        if (!sbi->s_imap)
+                goto nomem;
+        block = clus_to_blk(sbi, sbi->s_bitmap_ino);
+        ptr = sbi->s_imap;
+        for (count = bitmap_size; count > 0; count -= sb->s_blocksize) {
+                bh = sb_bread(sb, block++);
+                if (!bh)
+                        goto nomem_free;
+                *ptr = kmalloc(sb->s_blocksize, GFP_KERNEL);
+                if (!*ptr) {
+                        brelse(bh);
+                        goto nomem_free;
+                }
+                memcpy(*ptr, bh->b_data, sb->s_blocksize);
+                if (count < sb->s_blocksize)
+                        memset((void *)*ptr + count, 0xff,
+                                sb->s_blocksize - count);
+                brelse(bh);
+                ptr++;
+        }
+out:
+        return 0;
+nomem_free:
+        for (count = 0; count < array_size; count++)
+                kfree(sbi->s_imap[count]);
+        kfree(sbi->s_imap);
+nomem:
+        sbi->s_imap = NULL;
+        sbi->s_imap_size = 0;
+        return -ENOMEM;
+}
+enum {
+        Opt_uid, Opt_gid, Opt_umask, Opt_dmask, Opt_fmask
+};
+static match_table_t tokens = {
+        {Opt_uid, "uid=%u"},
+        {Opt_gid, "gid=%u"},
+        {Opt_umask, "umask=%o"},
+        {Opt_dmask, "dmask=%o"},
+        {Opt_fmask, "fmask=%o"},
+};
+static int parse_options(char *options, struct omfs_sb_info *sbi)
+{
+        char *p;
+        substring_t args[MAX_OPT_ARGS];
+        int option;
+        if (!options)
+                return 1;
+        while ((p = strsep(&options, ",")) != NULL) {
+                int token;
+                if (!*p)
+                        continue;
+                token = match_token(p, tokens, args);
+                switch (token) {
+                case Opt_uid:
+                        if (match_int(&args[0], &option))
+                                return 0;
+                        sbi->s_uid = option;
+                        break;
+                case Opt_gid:
+                        if (match_int(&args[0], &option))
+                                return 0;
+                        sbi->s_gid = option;
+                        break;
+                case Opt_umask:
+                        if (match_octal(&args[0], &option))
+                                return 0;
+                        sbi->s_fmask = sbi->s_dmask = option;
+                        break;
+                case Opt_dmask:
+                        if (match_octal(&args[0], &option))
+                                return 0;
+                        sbi->s_dmask = option;
+                        break;
+                case Opt_fmask:
+                        if (match_octal(&args[0], &option))
+                                return 0;
+                        sbi->s_fmask = option;
+                        break;
+                default:
+                        return 0;
+                }
+        }
+        return 1;
+}
+static int omfs_fill_super(struct super_block *sb, void *data, int silent)
+{
+        struct buffer_head *bh, *bh2;
+        struct omfs_super_block *omfs_sb;
+        struct omfs_root_block *omfs_rb;
+        struct omfs_sb_info *sbi;
+        struct inode *root;
+        sector_t start;
+        int ret = -EINVAL;
+        save_mount_options(sb, (char *) data);
+        sbi = kzalloc(sizeof(struct omfs_sb_info), GFP_KERNEL);
+        if (!sbi)
+                return -ENOMEM;
+        sb->s_fs_info = sbi;
+        sbi->s_uid = current->uid;
+        sbi->s_gid = current->gid;
+        sbi->s_dmask = sbi->s_fmask = current->fs->umask;
+        if (!parse_options((char *) data, sbi))
+                goto end;
+        sb->s_maxbytes = 0xffffffff;
+        sb_set_blocksize(sb, 0x200);
+        bh = sb_bread(sb, 0);
+        if (!bh)
+                goto end;
+        omfs_sb = (struct omfs_super_block *)bh->b_data;
+        if (omfs_sb->s_magic != cpu_to_be32(OMFS_MAGIC)) {
+                if (!silent)
+                        printk(KERN_ERR "omfs: Invalid superblock (%x)\n",
+                                   omfs_sb->s_magic);
+                goto out_brelse_bh;
+        }
+        sb->s_magic = OMFS_MAGIC;
+        sbi->s_num_blocks = be64_to_cpu(omfs_sb->s_num_blocks);
+        sbi->s_blocksize = be32_to_cpu(omfs_sb->s_blocksize);
+        sbi->s_mirrors = be32_to_cpu(omfs_sb->s_mirrors);
+        sbi->s_root_ino = be64_to_cpu(omfs_sb->s_root_block);
+        sbi->s_sys_blocksize = be32_to_cpu(omfs_sb->s_sys_blocksize);
+        mutex_init(&sbi->s_bitmap_lock);
+        if (sbi->s_sys_blocksize > PAGE_SIZE) {
+                printk(KERN_ERR "omfs: sysblock size (%d) is out of range\n",
+                        sbi->s_sys_blocksize);
+                goto out_brelse_bh;
+        }
+        if (sbi->s_blocksize < sbi->s_sys_blocksize ||
+            sbi->s_blocksize > OMFS_MAX_BLOCK_SIZE) {
+                printk(KERN_ERR "omfs: block size (%d) is out of range\n",
+                        sbi->s_blocksize);
+                goto out_brelse_bh;
+        }
+        /*
+         * Use sys_blocksize as the fs block since it is smaller than a
+         * page while the fs blocksize can be larger.
+         */
+        sb_set_blocksize(sb, sbi->s_sys_blocksize);
+        /*
+         * ...and the difference goes into a shift.  sys_blocksize is always
+         * a power of two factor of blocksize.
+         */
+        sbi->s_block_shift = get_bitmask_order(sbi->s_blocksize) -
+                get_bitmask_order(sbi->s_sys_blocksize);
+        start = clus_to_blk(sbi, be64_to_cpu(omfs_sb->s_root_block));
+        bh2 = sb_bread(sb, start);
+        if (!bh2)
+                goto out_brelse_bh;
+        omfs_rb = (struct omfs_root_block *)bh2->b_data;
+        sbi->s_bitmap_ino = be64_to_cpu(omfs_rb->r_bitmap);
+        sbi->s_clustersize = be32_to_cpu(omfs_rb->r_clustersize);
+        if (sbi->s_num_blocks != be64_to_cpu(omfs_rb->r_num_blocks)) {
+                printk(KERN_ERR "omfs: block count discrepancy between "
+                        "super and root blocks (%llx, %llx)\n",
+                        sbi->s_num_blocks, be64_to_cpu(omfs_rb->r_num_blocks));
+                goto out_brelse_bh2;
+        }
+        ret = omfs_get_imap(sb);
+        if (ret)
+                goto out_brelse_bh2;
+        sb->s_op = &omfs_sops;
+        root = omfs_iget(sb, be64_to_cpu(omfs_rb->r_root_dir));
+        if (IS_ERR(root)) {
+                ret = PTR_ERR(root);
+                goto out_brelse_bh2;
+        }
+        sb->s_root = d_alloc_root(root);
+        if (!sb->s_root) {
+                iput(root);
+                goto out_brelse_bh2;
+        }
+        printk(KERN_DEBUG "omfs: Mounted volume %s\n", omfs_rb->r_name);
+        ret = 0;
+out_brelse_bh2:
+        brelse(bh2);
+out_brelse_bh:
+        brelse(bh);
+end:
+        return ret;
+}
+static int omfs_get_sb(struct file_system_type *fs_type,
+                        int flags, const char *dev_name,
+                        void *data, struct vfsmount *m)
+{
+        return get_sb_bdev(fs_type, flags, dev_name, data, omfs_fill_super, m);
+}
+static struct file_system_type omfs_fs_type = {
+        .owner = THIS_MODULE,
+        .name = "omfs",
+        .get_sb = omfs_get_sb,
+        .kill_sb = kill_block_super,
+        .fs_flags = FS_REQUIRES_DEV,
+};
+static int __init init_omfs_fs(void)
+{
+        return register_filesystem(&omfs_fs_type);
+}
+static void __exit exit_omfs_fs(void)
+{
+        unregister_filesystem(&omfs_fs_type);
+}
+module_init(init_omfs_fs);
+module_exit(exit_omfs_fs);
diff --git a/fs/omfs/omfs.h b/fs/omfs/omfs.h
new file mode 100644
index 000000000000..2bc0f0670406
--- /dev/null
+++ b/fs/omfs/omfs.h
@@ -0,0 +1,67 @@
+#ifndef _OMFS_H
+#define _OMFS_H
+#include <linux/module.h>
+#include <linux/fs.h>
+#include "omfs_fs.h"
+/* In-memory structures */
+struct omfs_sb_info {
+        u64 s_num_blocks;
+        u64 s_bitmap_ino;
+        u64 s_root_ino;
+        u32 s_blocksize;
+        u32 s_mirrors;
+        u32 s_sys_blocksize;
+        u32 s_clustersize;
+        int s_block_shift;
+        unsigned long **s_imap;
+        int s_imap_size;
+        struct mutex s_bitmap_lock;
+        int s_uid;
+        int s_gid;
+        int s_dmask;
+        int s_fmask;
+};
+/* convert a cluster number to a scaled block number */
+static inline sector_t clus_to_blk(struct omfs_sb_info *sbi, sector_t block)
+{
+        return block << sbi->s_block_shift;
+}
+static inline struct omfs_sb_info *OMFS_SB(struct super_block *sb)
+{
+        return sb->s_fs_info;
+}
+/* bitmap.c */
+extern unsigned long omfs_count_free(struct super_block *sb);
+extern int omfs_allocate_block(struct super_block *sb, u64 block);
+extern int omfs_allocate_range(struct super_block *sb, int min_request,
+                        int max_request, u64 *return_block, int *return_size);
+extern int omfs_clear_range(struct super_block *sb, u64 block, int count);
+/* dir.c */
+extern struct file_operations omfs_dir_operations;
+extern struct inode_operations omfs_dir_inops;
+extern int omfs_make_empty(struct inode *inode, struct super_block *sb);
+extern int omfs_is_bad(struct omfs_sb_info *sbi, struct omfs_header *header,
+                        u64 fsblock);
+/* file.c */
+extern struct file_operations omfs_file_operations;
+extern struct inode_operations omfs_file_inops;
+extern struct address_space_operations omfs_aops;
+extern void omfs_make_empty_table(struct buffer_head *bh, int offset);
+extern int omfs_shrink_inode(struct inode *inode);
+/* inode.c */
+extern struct inode *omfs_iget(struct super_block *sb, ino_t inode);
+extern struct inode *omfs_new_inode(struct inode *dir, int mode);
+extern int omfs_reserve_block(struct super_block *sb, sector_t block);
+extern int omfs_find_empty_block(struct super_block *sb, int mode, ino_t *ino);
+extern int omfs_sync_inode(struct inode *inode);
+#endif
diff --git a/fs/omfs/omfs_fs.h b/fs/omfs/omfs_fs.h
new file mode 100644
index 000000000000..12cca245d6e8
--- /dev/null
+++ b/fs/omfs/omfs_fs.h
@@ -0,0 +1,80 @@
+#ifndef _OMFS_FS_H
+#define _OMFS_FS_H
+/* OMFS On-disk structures */
+#define OMFS_MAGIC 0xC2993D87
+#define OMFS_IMAGIC 0xD2
+#define OMFS_DIR 'D'
+#define OMFS_FILE 'F'
+#define OMFS_INODE_NORMAL 'e'
+#define OMFS_INODE_CONTINUATION 'c'
+#define OMFS_INODE_SYSTEM 's'
+#define OMFS_NAMELEN 256
+#define OMFS_DIR_START 0x1b8
+#define OMFS_EXTENT_START 0x1d0
+#define OMFS_EXTENT_CONT 0x40
+#define OMFS_XOR_COUNT 19
+#define OMFS_MAX_BLOCK_SIZE 8192
+struct omfs_super_block {
+        char s_fill1[256];
+        __be64 s_root_block;            /* block number of omfs_root_block */
+        __be64 s_num_blocks;            /* total number of FS blocks */
+        __be32 s_magic;                 /* OMFS_MAGIC */
+        __be32 s_blocksize;             /* size of a block */
+        __be32 s_mirrors;               /* # of mirrors of system blocks */
+        __be32 s_sys_blocksize;         /* size of non-data blocks */
+};
+struct omfs_header {
+        __be64 h_self;                  /* FS block where this is located */
+        __be32 h_body_size;             /* size of useful data after header */
+        __be16 h_crc;                   /* crc-ccitt of body_size bytes */
+        char h_fill1[2];
+        u8 h_version;                   /* version, always 1 */
+        char h_type;                    /* OMFS_INODE_X */
+        u8 h_magic;                     /* OMFS_IMAGIC */
+        u8 h_check_xor;                 /* XOR of header bytes before this */
+        __be32 h_fill2;
+};
+struct omfs_root_block {
+        struct omfs_header r_head;      /* header */
+        __be64 r_fill1;
+        __be64 r_num_blocks;            /* total number of FS blocks */
+        __be64 r_root_dir;              /* block # of root directory */
+        __be64 r_bitmap;                /* block # of free space bitmap */
+        __be32 r_blocksize;             /* size of a block */
+        __be32 r_clustersize;           /* size allocated for data blocks */
+        __be64 r_mirrors;               /* # of mirrors of system blocks */
+        char r_name[OMFS_NAMELEN];      /* partition label */
+};
+struct omfs_inode {
+        struct omfs_header i_head;      /* header */
+        __be64 i_parent;                /* parent containing this inode */
+        __be64 i_sibling;               /* next inode in hash bucket */
+        __be64 i_ctime;                 /* ctime, in milliseconds */
+        char i_fill1[35];
+        char i_type;                    /* OMFS_[DIR,FILE] */
+        __be32 i_fill2;
+        char i_fill3[64];
+        char i_name[OMFS_NAMELEN];      /* filename */
+        __be64 i_size;                  /* size of file, in bytes */
+};
+struct omfs_extent_entry {
+        __be64 e_cluster;               /* start location of a set of blocks */
+        __be64 e_blocks;                /* number of blocks after e_cluster */
+};
+struct omfs_extent {
+        __be64 e_next;                  /* next extent table location */
+        __be32 e_extent_count;          /* total # extents in this table */
+        __be32 e_fill;
+        struct omfs_extent_entry e_entry;       /* start of extent entries */
+};
+#endif
diff --git a/fs/open.c b/fs/open.c
index bb98d2fe809f..52647be277a2 100644
--- a/fs/open.c
+++ b/fs/open.c
@@ -122,37 +122,37 @@ static int vfs_statfs64(struct dentry *dentry, struct statfs64 *buf)
        return 0;
 }
-asmlinkage long sys_statfs(const char __user * path, struct statfs __user * buf)
+asmlinkage long sys_statfs(const char __user *pathname, struct statfs __user * buf)
 {
-        struct nameidata nd;
+        struct path path;
        int error;
-        error = user_path_walk(path, &nd);
+        error = user_path(pathname, &path);
        if (!error) {
                struct statfs tmp;
-                error = vfs_statfs_native(nd.path.dentry, &tmp);
+                error = vfs_statfs_native(path.dentry, &tmp);
                if (!error && copy_to_user(buf, &tmp, sizeof(tmp)))
                        error = -EFAULT;
-                path_put(&nd.path);
+                path_put(&path);
        }
        return error;
 }
-asmlinkage long sys_statfs64(const char __user *path, size_t sz, struct statfs64 __user *buf)
+asmlinkage long sys_statfs64(const char __user *pathname, size_t sz, struct statfs64 __user *buf)
 {
-        struct nameidata nd;
+        struct path path;
        long error;
        if (sz != sizeof(*buf))
                return -EINVAL;
-        error = user_path_walk(path, &nd);
+        error = user_path(pathname, &path);
        if (!error) {
                struct statfs64 tmp;
-                error = vfs_statfs64(nd.path.dentry, &tmp);
+                error = vfs_statfs64(path.dentry, &tmp);
                if (!error && copy_to_user(buf, &tmp, sizeof(tmp)))
                        error = -EFAULT;
-                path_put(&nd.path);
+                path_put(&path);
        }
        return error;
 }
@@ -223,20 +223,20 @@ int do_truncate(struct dentry *dentry, loff_t length, unsigned int time_attrs,
        return err;
 }
-static long do_sys_truncate(const char __user * path, loff_t length)
+static long do_sys_truncate(const char __user *pathname, loff_t length)
 {
-        struct nameidata nd;
+        struct path path;
-        struct inode * inode;
+        struct inode *inode;
        int error;
        error = -EINVAL;
        if (length < 0) /* sorry, but loff_t says... */
                goto out;
-        error = user_path_walk(path, &nd);
+        error = user_path(pathname, &path);
        if (error)
                goto out;
-        inode = nd.path.dentry->d_inode;
+        inode = path.dentry->d_inode;
        /* For directories it's -EISDIR, for other non-regulars - -EINVAL */
        error = -EISDIR;
@@ -247,16 +247,16 @@ static long do_sys_truncate(const char __user * path, loff_t length)
        if (!S_ISREG(inode->i_mode))
                goto dput_and_out;
-        error = mnt_want_write(nd.path.mnt);
+        error = mnt_want_write(path.mnt);
        if (error)
                goto dput_and_out;
-        error = vfs_permission(&nd, MAY_WRITE);
+        error = inode_permission(inode, MAY_WRITE);
        if (error)
                goto mnt_drop_write_and_out;
        error = -EPERM;
-        if (IS_IMMUTABLE(inode) || IS_APPEND(inode))
+        if (IS_APPEND(inode))
                goto mnt_drop_write_and_out;
        error = get_write_access(inode);
@@ -274,15 +274,15 @@ static long do_sys_truncate(const char __user * path, loff_t length)
        error = locks_verify_truncate(inode, NULL, length);
        if (!error) {
                DQUOT_INIT(inode);
-                error = do_truncate(nd.path.dentry, length, 0, NULL);
+                error = do_truncate(path.dentry, length, 0, NULL);
        }
 put_write_and_out:
        put_write_access(inode);
 mnt_drop_write_and_out:
-        mnt_drop_write(nd.path.mnt);
+        mnt_drop_write(path.mnt);
 dput_and_out:
-        path_put(&nd.path);
+        path_put(&path);
 out:
        return error;
 }
@@ -425,7 +425,8 @@ out:
 */
 asmlinkage long sys_faccessat(int dfd, const char __user *filename, int mode)
 {
-        struct nameidata nd;
+        struct path path;
+        struct inode *inode;
        int old_fsuid, old_fsgid;
        kernel_cap_t uninitialized_var(old_cap);  /* !SECURE_NO_SETUID_FIXUP */
        int res;
@@ -448,7 +449,7 @@ asmlinkage long sys_faccessat(int dfd, const char __user *filename, int mode)
                 * FIXME: There is a race here against sys_capset.  The
                 * capabilities can change yet we will restore the old
                 * value below.  We should hold task_capabilities_lock,
-                 * but we cannot because user_path_walk can sleep.
+                 * but we cannot because user_path_at can sleep.
                 */
 #endif /* ndef CONFIG_SECURITY_FILE_CAPABILITIES */
                if (current->uid)
@@ -457,14 +458,25 @@ asmlinkage long sys_faccessat(int dfd, const char __user *filename, int mode)
                        old_cap = cap_set_effective(current->cap_permitted);
        }
-        res = __user_walk_fd(dfd, filename, LOOKUP_FOLLOW|LOOKUP_ACCESS, &nd);
+        res = user_path_at(dfd, filename, LOOKUP_FOLLOW, &path);
        if (res)
                goto out;
-        res = vfs_permission(&nd, mode);
+        inode = path.dentry->d_inode;
+        if ((mode & MAY_EXEC) && S_ISREG(inode->i_mode)) {
+                /*
+                 * MAY_EXEC on regular files is denied if the fs is mounted
+                 * with the "noexec" flag.
+                 */
+                res = -EACCES;
+                if (path.mnt->mnt_flags & MNT_NOEXEC)
+                        goto out_path_release;
+        }
+        res = inode_permission(inode, mode | MAY_ACCESS);
        /* SuS v2 requires we report a read only fs too */
-        if(res || !(mode & S_IWOTH) ||
+        if (res || !(mode & S_IWOTH) || special_file(inode->i_mode))
-           special_file(nd.path.dentry->d_inode->i_mode))
                goto out_path_release;
        /*
         * This is a rare case where using __mnt_is_readonly()
@@ -476,11 +488,11 @@ asmlinkage long sys_faccessat(int dfd, const char __user *filename, int mode)
         * inherently racy and know that the fs may change
         * state before we even see this result.
         */
-        if (__mnt_is_readonly(nd.path.mnt))
+        if (__mnt_is_readonly(path.mnt))
                res = -EROFS;
 out_path_release:
-        path_put(&nd.path);
+        path_put(&path);
 out:
        current->fsuid = old_fsuid;
        current->fsgid = old_fsgid;
@@ -498,22 +510,21 @@ asmlinkage long sys_access(const char __user *filename, int mode)
 asmlinkage long sys_chdir(const char __user * filename)
 {
-        struct nameidata nd;
+        struct path path;
        int error;
-        error = __user_walk(filename,
+        error = user_path_dir(filename, &path);
-                            LOOKUP_FOLLOW|LOOKUP_DIRECTORY|LOOKUP_CHDIR, &nd);
        if (error)
                goto out;
-        error = vfs_permission(&nd, MAY_EXEC);
+        error = inode_permission(path.dentry->d_inode, MAY_EXEC | MAY_ACCESS);
        if (error)
                goto dput_and_out;
-        set_fs_pwd(current->fs, &nd.path);
+        set_fs_pwd(current->fs, &path);
 dput_and_out:
-        path_put(&nd.path);
+        path_put(&path);
 out:
        return error;
 }
@@ -535,7 +546,7 @@ asmlinkage long sys_fchdir(unsigned int fd)
        if (!S_ISDIR(inode->i_mode))
                goto out_putf;
-        error = file_permission(file, MAY_EXEC);
+        error = inode_permission(inode, MAY_EXEC | MAY_ACCESS);
        if (!error)
                set_fs_pwd(current->fs, &file->f_path);
 out_putf:
@@ -546,14 +557,14 @@ out:
 asmlinkage long sys_chroot(const char __user * filename)
 {
-        struct nameidata nd;
+        struct path path;
        int error;
-        error = __user_walk(filename, LOOKUP_FOLLOW | LOOKUP_DIRECTORY | LOOKUP_NOALT, &nd);
+        error = user_path_dir(filename, &path);
        if (error)
                goto out;
-        error = vfs_permission(&nd, MAY_EXEC);
+        error = inode_permission(path.dentry->d_inode, MAY_EXEC | MAY_ACCESS);
        if (error)
                goto dput_and_out;
@@ -561,11 +572,10 @@ asmlinkage long sys_chroot(const char __user * filename)
        if (!capable(CAP_SYS_CHROOT))
                goto dput_and_out;
-        set_fs_root(current->fs, &nd.path);
+        set_fs_root(current->fs, &path);
-        set_fs_altroot();
        error = 0;
 dput_and_out:
-        path_put(&nd.path);
+        path_put(&path);
 out:
        return error;
 }
@@ -590,9 +600,6 @@ asmlinkage long sys_fchmod(unsigned int fd, mode_t mode)
        err = mnt_want_write(file->f_path.mnt);
        if (err)
                goto out_putf;
-        err = -EPERM;
-        if (IS_IMMUTABLE(inode) || IS_APPEND(inode))
-                goto out_drop_write;
        mutex_lock(&inode->i_mutex);
        if (mode == (mode_t) -1)
                mode = inode->i_mode;
@@ -600,8 +607,6 @@ asmlinkage long sys_fchmod(unsigned int fd, mode_t mode)
        newattrs.ia_valid = ATTR_MODE | ATTR_CTIME;
        err = notify_change(dentry, &newattrs);
        mutex_unlock(&inode->i_mutex);
-out_drop_write:
        mnt_drop_write(file->f_path.mnt);
 out_putf:
        fput(file);
@@ -612,36 +617,29 @@ out:
 asmlinkage long sys_fchmodat(int dfd, const char __user *filename,
                             mode_t mode)
 {
-        struct nameidata nd;
+        struct path path;
-        struct inode * inode;
+        struct inode *inode;
        int error;
        struct iattr newattrs;
-        error = __user_walk_fd(dfd, filename, LOOKUP_FOLLOW, &nd);
+        error = user_path_at(dfd, filename, LOOKUP_FOLLOW, &path);
        if (error)
                goto out;
-        inode = nd.path.dentry->d_inode;
+        inode = path.dentry->d_inode;
-        error = mnt_want_write(nd.path.mnt);
+        error = mnt_want_write(path.mnt);
        if (error)
                goto dput_and_out;
-        error = -EPERM;
-        if (IS_IMMUTABLE(inode) || IS_APPEND(inode))
-                goto out_drop_write;
        mutex_lock(&inode->i_mutex);
        if (mode == (mode_t) -1)
                mode = inode->i_mode;
        newattrs.ia_mode = (mode & S_IALLUGO) | (inode->i_mode & ~S_IALLUGO);
        newattrs.ia_valid = ATTR_MODE | ATTR_CTIME;
-        error = notify_change(nd.path.dentry, &newattrs);
+        error = notify_change(path.dentry, &newattrs);
        mutex_unlock(&inode->i_mutex);
+        mnt_drop_write(path.mnt);
-out_drop_write:
-        mnt_drop_write(nd.path.mnt);
 dput_and_out:
-        path_put(&nd.path);
+        path_put(&path);
 out:
        return error;
 }
@@ -653,18 +651,10 @@ asmlinkage long sys_chmod(const char __user *filename, mode_t mode)
 static int chown_common(struct dentry * dentry, uid_t user, gid_t group)
 {
-        struct inode * inode;
+        struct inode *inode = dentry->d_inode;
        int error;
        struct iattr newattrs;
-        error = -ENOENT;
-        if (!(inode = dentry->d_inode)) {
-                printk(KERN_ERR "chown_common: NULL inode\n");
-                goto out;
-        }
-        error = -EPERM;
-        if (IS_IMMUTABLE(inode) || IS_APPEND(inode))
-                goto out;
        newattrs.ia_valid =  ATTR_CTIME;
        if (user != (uid_t) -1) {
                newattrs.ia_valid |= ATTR_UID;
@@ -680,25 +670,25 @@ static int chown_common(struct dentry * dentry, uid_t user, gid_t group)
        mutex_lock(&inode->i_mutex);
        error = notify_change(dentry, &newattrs);
        mutex_unlock(&inode->i_mutex);
-out:
        return error;
 }
 asmlinkage long sys_chown(const char __user * filename, uid_t user, gid_t group)
 {
-        struct nameidata nd;
+        struct path path;
        int error;
-        error = user_path_walk(filename, &nd);
+        error = user_path(filename, &path);
        if (error)
                goto out;
-        error = mnt_want_write(nd.path.mnt);
+        error = mnt_want_write(path.mnt);
        if (error)
                goto out_release;
-        error = chown_common(nd.path.dentry, user, group);
+        error = chown_common(path.dentry, user, group);
-        mnt_drop_write(nd.path.mnt);
+        mnt_drop_write(path.mnt);
 out_release:
-        path_put(&nd.path);
+        path_put(&path);
 out:
        return error;
 }
@@ -706,7 +696,7 @@ out:
 asmlinkage long sys_fchownat(int dfd, const char __user *filename, uid_t user,
                             gid_t group, int flag)
 {
-        struct nameidata nd;
+        struct path path;
        int error = -EINVAL;
        int follow;
@@ -714,35 +704,35 @@ asmlinkage long sys_fchownat(int dfd, const char __user *filename, uid_t user,
                goto out;
        follow = (flag & AT_SYMLINK_NOFOLLOW) ? 0 : LOOKUP_FOLLOW;
-        error = __user_walk_fd(dfd, filename, follow, &nd);
+        error = user_path_at(dfd, filename, follow, &path);
        if (error)
                goto out;
-        error = mnt_want_write(nd.path.mnt);
+        error = mnt_want_write(path.mnt);
        if (error)
                goto out_release;
-        error = chown_common(nd.path.dentry, user, group);
+        error = chown_common(path.dentry, user, group);
-        mnt_drop_write(nd.path.mnt);
+        mnt_drop_write(path.mnt);
 out_release:
-        path_put(&nd.path);
+        path_put(&path);
 out:
        return error;
 }
 asmlinkage long sys_lchown(const char __user * filename, uid_t user, gid_t group)
 {
-        struct nameidata nd;
+        struct path path;
        int error;
-        error = user_path_walk_link(filename, &nd);
+        error = user_lpath(filename, &path);
        if (error)
                goto out;
-        error = mnt_want_write(nd.path.mnt);
+        error = mnt_want_write(path.mnt);
        if (error)
                goto out_release;
-        error = chown_common(nd.path.dentry, user, group);
+        error = chown_common(path.dentry, user, group);
-        mnt_drop_write(nd.path.mnt);
+        mnt_drop_write(path.mnt);
 out_release:
-        path_put(&nd.path);
+        path_put(&path);
 out:
        return error;
 }
@@ -982,7 +972,6 @@ int get_unused_fd_flags(int flags)
        int fd, error;
        struct fdtable *fdt;
-        error = -EMFILE;
        spin_lock(&files->file_lock);
 repeat:
@@ -990,13 +979,6 @@ repeat:
        fd = find_next_zero_bit(fdt->open_fds->fds_bits, fdt->max_fds,
                                files->next_fd);
-        /*
-         * N.B. For clone tasks sharing a files structure, this test
-         * will limit the total number of files that can be opened.
-         */
-        if (fd >= current->signal->rlim[RLIMIT_NOFILE].rlim_cur)
-                goto out;
        /* Do we need to expand the fd array or fd set?  */
        error = expand_files(files, fd);
        if (error < 0)
@@ -1007,7 +989,6 @@ repeat:
                 * If we needed to expand the fs array we
                 * might have blocked - try again.
                 */
-                error = -EMFILE;
                goto repeat;
        }
diff --git a/fs/openpromfs/inode.c b/fs/openpromfs/inode.c
index d17b4fd204e1..9f5b054f06b9 100644
--- a/fs/openpromfs/inode.c
+++ b/fs/openpromfs/inode.c
@@ -430,7 +430,7 @@ static struct file_system_type openprom_fs_type = {
        .kill_sb        = kill_anon_super,
 };
-static void op_inode_init_once(struct kmem_cache * cachep, void *data)
+static void op_inode_init_once(void *data)
 {
        struct op_inode_info *oi = (struct op_inode_info *) data;
diff --git a/fs/pipe.c b/fs/pipe.c
index 10c4e9aa5c49..fcba6542b8d0 100644
--- a/fs/pipe.c
+++ b/fs/pipe.c
@@ -777,45 +777,10 @@ pipe_rdwr_open(struct inode *inode, struct file *filp)
 /*
 * The file_operations structs are not static because they
 * are also used in linux/fs/fifo.c to do operations on FIFOs.
+ *
+ * Pipes reuse fifos' file_operations structs.
 */
-const struct file_operations read_fifo_fops = {
+const struct file_operations read_pipefifo_fops = {
-        .llseek         = no_llseek,
-        .read           = do_sync_read,
-        .aio_read       = pipe_read,
-        .write          = bad_pipe_w,
-        .poll           = pipe_poll,
-        .unlocked_ioctl = pipe_ioctl,
-        .open           = pipe_read_open,
-        .release        = pipe_read_release,
-        .fasync         = pipe_read_fasync,
-};
-const struct file_operations write_fifo_fops = {
-        .llseek         = no_llseek,
-        .read           = bad_pipe_r,
-        .write          = do_sync_write,
-        .aio_write      = pipe_write,
-        .poll           = pipe_poll,
-        .unlocked_ioctl = pipe_ioctl,
-        .open           = pipe_write_open,
-        .release        = pipe_write_release,
-        .fasync         = pipe_write_fasync,
-};
-const struct file_operations rdwr_fifo_fops = {
-        .llseek         = no_llseek,
-        .read           = do_sync_read,
-        .aio_read       = pipe_read,
-        .write          = do_sync_write,
-        .aio_write      = pipe_write,
-        .poll           = pipe_poll,
-        .unlocked_ioctl = pipe_ioctl,
-        .open           = pipe_rdwr_open,
-        .release        = pipe_rdwr_release,
-        .fasync         = pipe_rdwr_fasync,
-};
-static const struct file_operations read_pipe_fops = {
        .llseek         = no_llseek,
        .read           = do_sync_read,
        .aio_read       = pipe_read,
@@ -827,7 +792,7 @@ static const struct file_operations read_pipe_fops = {
        .fasync         = pipe_read_fasync,
 };
-static const struct file_operations write_pipe_fops = {
+const struct file_operations write_pipefifo_fops = {
        .llseek         = no_llseek,
        .read           = bad_pipe_r,
        .write          = do_sync_write,
@@ -839,7 +804,7 @@ static const struct file_operations write_pipe_fops = {
        .fasync         = pipe_write_fasync,
 };
-static const struct file_operations rdwr_pipe_fops = {
+const struct file_operations rdwr_pipefifo_fops = {
        .llseek         = no_llseek,
        .read           = do_sync_read,
        .aio_read       = pipe_read,
@@ -927,7 +892,7 @@ static struct inode * get_pipe_inode(void)
        inode->i_pipe = pipe;
        pipe->readers = pipe->writers = 1;
-        inode->i_fop = &rdwr_pipe_fops;
+        inode->i_fop = &rdwr_pipefifo_fops;
        /*
         * Mark the inode dirty from the very beginning,
@@ -978,7 +943,7 @@ struct file *create_write_pipe(int flags)
        d_instantiate(dentry, inode);
        err = -ENFILE;
-        f = alloc_file(pipe_mnt, dentry, FMODE_WRITE, &write_pipe_fops);
+        f = alloc_file(pipe_mnt, dentry, FMODE_WRITE, &write_pipefifo_fops);
        if (!f)
                goto err_dentry;
        f->f_mapping = inode->i_mapping;
@@ -1020,7 +985,7 @@ struct file *create_read_pipe(struct file *wrf, int flags)
        f->f_pos = 0;
        f->f_flags = O_RDONLY | (flags & O_NONBLOCK);
-        f->f_op = &read_pipe_fops;
+        f->f_op = &read_pipefifo_fops;
        f->f_mode = FMODE_READ;
        f->f_version = 0;
diff --git a/fs/proc/array.c b/fs/proc/array.c
index 797d775e0354..0d6eb33597c6 100644
--- a/fs/proc/array.c
+++ b/fs/proc/array.c
@@ -80,6 +80,7 @@
 #include <linux/delayacct.h>
 #include <linux/seq_file.h>
 #include <linux/pid_namespace.h>
+#include <linux/tracehook.h>
 #include <asm/pgtable.h>
 #include <asm/processor.h>
@@ -168,8 +169,12 @@ static inline void task_state(struct seq_file *m, struct pid_namespace *ns,
        rcu_read_lock();
        ppid = pid_alive(p) ?
                task_tgid_nr_ns(rcu_dereference(p->real_parent), ns) : 0;
-        tpid = pid_alive(p) && p->ptrace ?
+        tpid = 0;
-                task_pid_nr_ns(rcu_dereference(p->parent), ns) : 0;
+        if (pid_alive(p)) {
+                struct task_struct *tracer = tracehook_tracer_task(p);
+                if (tracer)
+                        tpid = task_pid_nr_ns(tracer, ns);
+        }
        seq_printf(m,
                "State:\t%s\n"
                "Tgid:\t%d\n"
diff --git a/fs/proc/base.c b/fs/proc/base.c
index a891fe4cb43b..01ed610f9b87 100644
--- a/fs/proc/base.c
+++ b/fs/proc/base.c
@@ -53,6 +53,7 @@
 #include <linux/time.h>
 #include <linux/proc_fs.h>
 #include <linux/stat.h>
+#include <linux/task_io_accounting_ops.h>
 #include <linux/init.h>
 #include <linux/capability.h>
 #include <linux/file.h>
@@ -69,6 +70,7 @@
 #include <linux/mount.h>
 #include <linux/security.h>
 #include <linux/ptrace.h>
+#include <linux/tracehook.h>
 #include <linux/cgroup.h>
 #include <linux/cpuset.h>
 #include <linux/audit.h>
@@ -231,10 +233,14 @@ static int check_mem_permission(struct task_struct *task)
         * If current is actively ptrace'ing, and would also be
         * permitted to freshly attach with ptrace now, permit it.
         */
-        if (task->parent == current && (task->ptrace & PT_PTRACED) &&
+        if (task_is_stopped_or_traced(task)) {
-            task_is_stopped_or_traced(task) &&
+                int match;
-            ptrace_may_access(task, PTRACE_MODE_ATTACH))
+                rcu_read_lock();
-                return 0;
+                match = (tracehook_tracer_task(task) == current);
+                rcu_read_unlock();
+                if (match && ptrace_may_access(task, PTRACE_MODE_ATTACH))
+                        return 0;
+        }
        /*
         * Noone else is allowed.
@@ -504,6 +510,26 @@ static int proc_pid_limits(struct task_struct *task, char *buffer)
        return count;
 }
+#ifdef CONFIG_HAVE_ARCH_TRACEHOOK
+static int proc_pid_syscall(struct task_struct *task, char *buffer)
+{
+        long nr;
+        unsigned long args[6], sp, pc;
+        if (task_current_syscall(task, &nr, args, 6, &sp, &pc))
+                return sprintf(buffer, "running\n");
+        if (nr < 0)
+                return sprintf(buffer, "%ld 0x%lx 0x%lx\n", nr, sp, pc);
+        return sprintf(buffer,
+                       "%ld 0x%lx 0x%lx 0x%lx 0x%lx 0x%lx 0x%lx 0x%lx 0x%lx\n",
+                       nr,
+                       args[0], args[1], args[2], args[3], args[4], args[5],
+                       sp, pc);
+}
+#endif /* CONFIG_HAVE_ARCH_TRACEHOOK */
 /************************************************************************/
 /*                       Here the fs part begins                        */
 /************************************************************************/
@@ -1834,8 +1860,7 @@ static const struct file_operations proc_fd_operations = {
 * /proc/pid/fd needs a special permission handler so that a process can still
 * access /proc/self/fd after it has executed a setuid().
 */
-static int proc_fd_permission(struct inode *inode, int mask,
+static int proc_fd_permission(struct inode *inode, int mask)
-                                struct nameidata *nd)
 {
        int rv;
@@ -2378,53 +2403,18 @@ static int proc_base_fill_cache(struct file *filp, void *dirent,
 #ifdef CONFIG_TASK_IO_ACCOUNTING
 static int do_io_accounting(struct task_struct *task, char *buffer, int whole)
 {
-        u64 rchar, wchar, syscr, syscw;
+        struct task_io_accounting acct = task->ioac;
-        struct task_io_accounting ioac;
+        unsigned long flags;
-        if (!whole) {
-                rchar = task->rchar;
-                wchar = task->wchar;
-                syscr = task->syscr;
-                syscw = task->syscw;
-                memcpy(&ioac, &task->ioac, sizeof(ioac));
-        } else {
-                unsigned long flags;
-                struct task_struct *t = task;
-                rchar = wchar = syscr = syscw = 0;
-                memset(&ioac, 0, sizeof(ioac));
-                rcu_read_lock();
-                do {
-                        rchar += t->rchar;
-                        wchar += t->wchar;
-                        syscr += t->syscr;
-                        syscw += t->syscw;
-                        ioac.read_bytes += t->ioac.read_bytes;
-                        ioac.write_bytes += t->ioac.write_bytes;
-                        ioac.cancelled_write_bytes +=
-                                        t->ioac.cancelled_write_bytes;
-                        t = next_thread(t);
-                } while (t != task);
-                rcu_read_unlock();
-                if (lock_task_sighand(task, &flags)) {
-                        struct signal_struct *sig = task->signal;
-                        rchar += sig->rchar;
+        if (whole && lock_task_sighand(task, &flags)) {
-                        wchar += sig->wchar;
+                struct task_struct *t = task;
-                        syscr += sig->syscr;
-                        syscw += sig->syscw;
-                        ioac.read_bytes += sig->ioac.read_bytes;
+                task_io_accounting_add(&acct, &task->signal->ioac);
-                        ioac.write_bytes += sig->ioac.write_bytes;
+                while_each_thread(task, t)
-                        ioac.cancelled_write_bytes +=
+                        task_io_accounting_add(&acct, &t->ioac);
-                                        sig->ioac.cancelled_write_bytes;
-                        unlock_task_sighand(task, &flags);
+                unlock_task_sighand(task, &flags);
-                }
        }
        return sprintf(buffer,
                        "rchar: %llu\n"
                        "wchar: %llu\n"
@@ -2433,13 +2423,10 @@ static int do_io_accounting(struct task_struct *task, char *buffer, int whole)
                        "read_bytes: %llu\n"
                        "write_bytes: %llu\n"
                        "cancelled_write_bytes: %llu\n",
-                        (unsigned long long)rchar,
+                        acct.rchar, acct.wchar,
-                        (unsigned long long)wchar,
+                        acct.syscr, acct.syscw,
-                        (unsigned long long)syscr,
+                        acct.read_bytes, acct.write_bytes,
-                        (unsigned long long)syscw,
+                        acct.cancelled_write_bytes);
-                        (unsigned long long)ioac.read_bytes,
-                        (unsigned long long)ioac.write_bytes,
-                        (unsigned long long)ioac.cancelled_write_bytes);
 }
 static int proc_tid_io_accounting(struct task_struct *task, char *buffer)
@@ -2473,6 +2460,9 @@ static const struct pid_entry tgid_base_stuff[] = {
 #ifdef CONFIG_SCHED_DEBUG
        REG("sched",      S_IRUGO|S_IWUSR, pid_sched),
 #endif
+#ifdef CONFIG_HAVE_ARCH_TRACEHOOK
+        INF("syscall",    S_IRUSR, pid_syscall),
+#endif
        INF("cmdline",    S_IRUGO, pid_cmdline),
        ONE("stat",       S_IRUGO, tgid_stat),
        ONE("statm",      S_IRUGO, pid_statm),
@@ -2805,6 +2795,9 @@ static const struct pid_entry tid_base_stuff[] = {
 #ifdef CONFIG_SCHED_DEBUG
        REG("sched",     S_IRUGO|S_IWUSR, pid_sched),
 #endif
+#ifdef CONFIG_HAVE_ARCH_TRACEHOOK
+        INF("syscall",   S_IRUSR, pid_syscall),
+#endif
        INF("cmdline",   S_IRUGO, pid_cmdline),
        ONE("stat",      S_IRUGO, tid_stat),
        ONE("statm",     S_IRUGO, pid_statm),
diff --git a/fs/proc/generic.c b/fs/proc/generic.c
index bc0a0dd2d844..cb4096cc3fb7 100644
--- a/fs/proc/generic.c
+++ b/fs/proc/generic.c
@@ -806,12 +806,9 @@ continue_removing:
        if (S_ISDIR(de->mode))
                parent->nlink--;
        de->nlink = 0;
-        if (de->subdir) {
+        WARN(de->subdir, KERN_WARNING "%s: removing non-empty directory "
-                printk(KERN_WARNING "%s: removing non-empty directory "
                        "'%s/%s', leaking at least '%s'\n", __func__,
                        de->parent->name, de->name, de->subdir->name);
-                WARN_ON(1);
-        }
        if (atomic_dec_and_test(&de->count))
                free_proc_entry(de);
 }
diff --git a/fs/proc/inode.c b/fs/proc/inode.c
index 02eca2ed9dd7..8bb03f056c28 100644
--- a/fs/proc/inode.c
+++ b/fs/proc/inode.c
@@ -17,6 +17,7 @@
 #include <linux/init.h>
 #include <linux/module.h>
 #include <linux/smp_lock.h>
+#include <linux/sysctl.h>
 #include <asm/system.h>
 #include <asm/uaccess.h>
@@ -65,6 +66,8 @@ static void proc_delete_inode(struct inode *inode)
                        module_put(de->owner);
                de_put(de);
        }
+        if (PROC_I(inode)->sysctl)
+                sysctl_head_put(PROC_I(inode)->sysctl);
        clear_inode(inode);
 }
@@ -84,6 +87,8 @@ static struct inode *proc_alloc_inode(struct super_block *sb)
        ei->fd = 0;
        ei->op.proc_get_link = NULL;
        ei->pde = NULL;
+        ei->sysctl = NULL;
+        ei->sysctl_entry = NULL;
        inode = &ei->vfs_inode;
        inode->i_mtime = inode->i_atime = inode->i_ctime = CURRENT_TIME;
        return inode;
@@ -94,7 +99,7 @@ static void proc_destroy_inode(struct inode *inode)
        kmem_cache_free(proc_inode_cachep, PROC_I(inode));
 }
-static void init_once(struct kmem_cache * cachep, void *foo)
+static void init_once(void *foo)
 {
        struct proc_inode *ei = (struct proc_inode *) foo;
diff --git a/fs/proc/proc_sysctl.c b/fs/proc/proc_sysctl.c
index 5acc001d49f6..f9a8b892718f 100644
--- a/fs/proc/proc_sysctl.c
+++ b/fs/proc/proc_sysctl.c
@@ -10,149 +10,110 @@
 static struct dentry_operations proc_sys_dentry_operations;
 static const struct file_operations proc_sys_file_operations;
 static const struct inode_operations proc_sys_inode_operations;
+static const struct file_operations proc_sys_dir_file_operations;
+static const struct inode_operations proc_sys_dir_operations;
-static void proc_sys_refresh_inode(struct inode *inode, struct ctl_table *table)
+static struct inode *proc_sys_make_inode(struct super_block *sb,
-{
+                struct ctl_table_header *head, struct ctl_table *table)
-        /* Refresh the cached information bits in the inode */
-        if (table) {
-                inode->i_uid = 0;
-                inode->i_gid = 0;
-                inode->i_mode = table->mode;
-                if (table->proc_handler) {
-                        inode->i_mode |= S_IFREG;
-                        inode->i_nlink = 1;
-                } else {
-                        inode->i_mode |= S_IFDIR;
-                        inode->i_nlink = 0;     /* It is too hard to figure out */
-                }
-        }
-}
-static struct inode *proc_sys_make_inode(struct inode *dir, struct ctl_table *table)
 {
        struct inode *inode;
-        struct proc_inode *dir_ei, *ei;
+        struct proc_inode *ei;
-        int depth;
-        inode = new_inode(dir->i_sb);
+        inode = new_inode(sb);
        if (!inode)
                goto out;
-        /* A directory is always one deeper than it's parent */
+        sysctl_head_get(head);
-        dir_ei = PROC_I(dir);
-        depth = dir_ei->fd + 1;
        ei = PROC_I(inode);
-        ei->fd = depth;
+        ei->sysctl = head;
+        ei->sysctl_entry = table;
        inode->i_mtime = inode->i_atime = inode->i_ctime = CURRENT_TIME;
-        inode->i_op = &proc_sys_inode_operations;
-        inode->i_fop = &proc_sys_file_operations;
        inode->i_flags |= S_PRIVATE; /* tell selinux to ignore this inode */
-        proc_sys_refresh_inode(inode, table);
+        inode->i_mode = table->mode;
+        if (!table->child) {
+                inode->i_mode |= S_IFREG;
+                inode->i_op = &proc_sys_inode_operations;
+                inode->i_fop = &proc_sys_file_operations;
+        } else {
+                inode->i_mode |= S_IFDIR;
+                inode->i_nlink = 0;
+                inode->i_op = &proc_sys_dir_operations;
+                inode->i_fop = &proc_sys_dir_file_operations;
+        }
 out:
        return inode;
 }
-static struct dentry *proc_sys_ancestor(struct dentry *dentry, int depth)
+static struct ctl_table *find_in_table(struct ctl_table *p, struct qstr *name)
-{
-        for (;;) {
-                struct proc_inode *ei;
-                ei = PROC_I(dentry->d_inode);
-                if (ei->fd == depth)
-                        break; /* found */
-                dentry = dentry->d_parent;
-        }
-        return dentry;
-}
-static struct ctl_table *proc_sys_lookup_table_one(struct ctl_table *table,
-                                                        struct qstr *name)
 {
        int len;
-        for ( ; table->ctl_name || table->procname; table++) {
+        for ( ; p->ctl_name || p->procname; p++) {
-                if (!table->procname)
+                if (!p->procname)
                        continue;
-                len = strlen(table->procname);
+                len = strlen(p->procname);
                if (len != name->len)
                        continue;
-                if (memcmp(table->procname, name->name, len) != 0)
+                if (memcmp(p->procname, name->name, len) != 0)
                        continue;
                /* I have a match */
-                return table;
+                return p;
        }
        return NULL;
 }
-static struct ctl_table *proc_sys_lookup_table(struct dentry *dentry,
+struct ctl_table_header *grab_header(struct inode *inode)
-                                                struct ctl_table *table)
 {
-        struct dentry *ancestor;
+        if (PROC_I(inode)->sysctl)
-        struct proc_inode *ei;
+                return sysctl_head_grab(PROC_I(inode)->sysctl);
-        int depth, i;
+        else
+                return sysctl_head_next(NULL);
+}
-        ei = PROC_I(dentry->d_inode);
+static struct dentry *proc_sys_lookup(struct inode *dir, struct dentry *dentry,
-        depth = ei->fd;
+                                        struct nameidata *nd)
+{
+        struct ctl_table_header *head = grab_header(dir);
+        struct ctl_table *table = PROC_I(dir)->sysctl_entry;
+        struct ctl_table_header *h = NULL;
+        struct qstr *name = &dentry->d_name;
+        struct ctl_table *p;
+        struct inode *inode;
+        struct dentry *err = ERR_PTR(-ENOENT);
-        if (depth == 0)
+        if (IS_ERR(head))
-                return table;
+                return ERR_CAST(head);
-        for (i = 1; table && (i <= depth); i++) {
+        if (table && !table->child) {
-                ancestor = proc_sys_ancestor(dentry, i);
+                WARN_ON(1);
-                table = proc_sys_lookup_table_one(table, &ancestor->d_name);
+                goto out;
-                if (table)
-                        table = table->child;
        }
-        return table;
-}
-static struct ctl_table *proc_sys_lookup_entry(struct dentry *dparent,
-                                                struct qstr *name,
-                                                struct ctl_table *table)
-{
-        table = proc_sys_lookup_table(dparent, table);
-        if (table)
-                table = proc_sys_lookup_table_one(table, name);
-        return table;
-}
-static struct ctl_table *do_proc_sys_lookup(struct dentry *parent,
+        table = table ? table->child : head->ctl_table;
-                                                struct qstr *name,
-                                                struct ctl_table_header **ptr)
-{
-        struct ctl_table_header *head;
-        struct ctl_table *table = NULL;
-        for (head = sysctl_head_next(NULL); head;
+        p = find_in_table(table, name);
-                        head = sysctl_head_next(head)) {
+        if (!p) {
-                table = proc_sys_lookup_entry(parent, name, head->ctl_table);
+                for (h = sysctl_head_next(NULL); h; h = sysctl_head_next(h)) {
-                if (table)
+                        if (h->attached_to != table)
-                        break;
+                                continue;
+                        p = find_in_table(h->attached_by, name);
+                        if (p)
+                                break;
+                }
        }
-        *ptr = head;
-        return table;
-}
-static struct dentry *proc_sys_lookup(struct inode *dir, struct dentry *dentry,
-                                        struct nameidata *nd)
-{
-        struct ctl_table_header *head;
-        struct inode *inode;
-        struct dentry *err;
-        struct ctl_table *table;
-        err = ERR_PTR(-ENOENT);
+        if (!p)
-        table = do_proc_sys_lookup(dentry->d_parent, &dentry->d_name, &head);
-        if (!table)
                goto out;
        err = ERR_PTR(-ENOMEM);
-        inode = proc_sys_make_inode(dir, table);
+        inode = proc_sys_make_inode(dir->i_sb, h ? h : head, p);
+        if (h)
+                sysctl_head_finish(h);
        if (!inode)
                goto out;
@@ -168,22 +129,14 @@ out:
 static ssize_t proc_sys_call_handler(struct file *filp, void __user *buf,
                size_t count, loff_t *ppos, int write)
 {
-        struct dentry *dentry = filp->f_dentry;
+        struct inode *inode = filp->f_path.dentry->d_inode;
-        struct ctl_table_header *head;
+        struct ctl_table_header *head = grab_header(inode);
-        struct ctl_table *table;
+        struct ctl_table *table = PROC_I(inode)->sysctl_entry;
        ssize_t error;
        size_t res;
-        table = do_proc_sys_lookup(dentry->d_parent, &dentry->d_name, &head);
+        if (IS_ERR(head))
-        /* Has the sysctl entry disappeared on us? */
+                return PTR_ERR(head);
-        error = -ENOENT;
-        if (!table)
-                goto out;
-        /* Has the sysctl entry been replaced by a directory? */
-        error = -EISDIR;
-        if (!table->proc_handler)
-                goto out;
        /*
         * At this point we know that the sysctl was not unregistered
@@ -193,6 +146,11 @@ static ssize_t proc_sys_call_handler(struct file *filp, void __user *buf,
        if (sysctl_perm(head->root, table, write ? MAY_WRITE : MAY_READ))
                goto out;
+        /* if that can happen at all, it should be -EINVAL, not -EISDIR */
+        error = -EINVAL;
+        if (!table->proc_handler)
+                goto out;
        /* careful: calling conventions are nasty here */
        res = count;
        error = table->proc_handler(table, write, filp, buf, &res, ppos);
@@ -218,82 +176,86 @@ static ssize_t proc_sys_write(struct file *filp, const char __user *buf,
 static int proc_sys_fill_cache(struct file *filp, void *dirent,
-                                filldir_t filldir, struct ctl_table *table)
+                                filldir_t filldir,
+                                struct ctl_table_header *head,
+                                struct ctl_table *table)
 {
-        struct ctl_table_header *head;
-        struct ctl_table *child_table = NULL;
        struct dentry *child, *dir = filp->f_path.dentry;
        struct inode *inode;
        struct qstr qname;
        ino_t ino = 0;
        unsigned type = DT_UNKNOWN;
-        int ret;
        qname.name = table->procname;
        qname.len  = strlen(table->procname);
        qname.hash = full_name_hash(qname.name, qname.len);
-        /* Suppress duplicates.
-         * Only fill a directory entry if it is the value that
-         * an ordinary lookup of that name returns.  Hide all
-         * others.
-         *
-         * If we ever cache this translation in the dcache
-         * I should do a dcache lookup first.  But for now
-         * it is just simpler not to.
-         */
-        ret = 0;
-        child_table = do_proc_sys_lookup(dir, &qname, &head);
-        sysctl_head_finish(head);
-        if (child_table != table)
-                return 0;
        child = d_lookup(dir, &qname);
        if (!child) {
-                struct dentry *new;
+                child = d_alloc(dir, &qname);
-                new = d_alloc(dir, &qname);
+                if (child) {
-                if (new) {
+                        inode = proc_sys_make_inode(dir->d_sb, head, table);
-                        inode = proc_sys_make_inode(dir->d_inode, table);
+                        if (!inode) {
-                        if (!inode)
+                                dput(child);
-                                child = ERR_PTR(-ENOMEM);
+                                return -ENOMEM;
-                        else {
+                        } else {
-                                new->d_op = &proc_sys_dentry_operations;
+                                child->d_op = &proc_sys_dentry_operations;
-                                d_add(new, inode);
+                                d_add(child, inode);
                        }
-                        if (child)
+                } else {
-                                dput(new);
+                        return -ENOMEM;
-                        else
-                                child = new;
                }
        }
-        if (!child || IS_ERR(child) || !child->d_inode)
-                goto end_instantiate;
        inode = child->d_inode;
-        if (inode) {
+        ino  = inode->i_ino;
-                ino  = inode->i_ino;
+        type = inode->i_mode >> 12;
-                type = inode->i_mode >> 12;
-        }
        dput(child);
-end_instantiate:
+        return !!filldir(dirent, qname.name, qname.len, filp->f_pos, ino, type);
-        if (!ino)
+}
-                ino= find_inode_number(dir, &qname);
-        if (!ino)
+static int scan(struct ctl_table_header *head, ctl_table *table,
-                ino = 1;
+                unsigned long *pos, struct file *file,
-        return filldir(dirent, qname.name, qname.len, filp->f_pos, ino, type);
+                void *dirent, filldir_t filldir)
+{
+        for (; table->ctl_name || table->procname; table++, (*pos)++) {
+                int res;
+                /* Can't do anything without a proc name */
+                if (!table->procname)
+                        continue;
+                if (*pos < file->f_pos)
+                        continue;
+                res = proc_sys_fill_cache(file, dirent, filldir, head, table);
+                if (res)
+                        return res;
+                file->f_pos = *pos + 1;
+        }
+        return 0;
 }
 static int proc_sys_readdir(struct file *filp, void *dirent, filldir_t filldir)
 {
-        struct dentry *dentry = filp->f_dentry;
+        struct dentry *dentry = filp->f_path.dentry;
        struct inode *inode = dentry->d_inode;
-        struct ctl_table_header *head = NULL;
+        struct ctl_table_header *head = grab_header(inode);
-        struct ctl_table *table;
+        struct ctl_table *table = PROC_I(inode)->sysctl_entry;
+        struct ctl_table_header *h = NULL;
        unsigned long pos;
-        int ret;
+        int ret = -EINVAL;
+        if (IS_ERR(head))
+                return PTR_ERR(head);
-        ret = -ENOTDIR;
+        if (table && !table->child) {
-        if (!S_ISDIR(inode->i_mode))
+                WARN_ON(1);
                goto out;
+        }
+        table = table ? table->child : head->ctl_table;
        ret = 0;
        /* Avoid a switch here: arm builds fail with missing __cmpdi2 */
@@ -311,30 +273,17 @@ static int proc_sys_readdir(struct file *filp, void *dirent, filldir_t filldir)
        }
        pos = 2;
-        /* - Find each instance of the directory
+        ret = scan(head, table, &pos, filp, dirent, filldir);
-         * - Read all entries in each instance
+        if (ret)
-         * - Before returning an entry to user space lookup the entry
+                goto out;
-         *   by name and if I find a different entry don't return
-         *   this one because it means it is a buried dup.
-         * For sysctl this should only happen for directory entries.
-         */
-        for (head = sysctl_head_next(NULL); head; head = sysctl_head_next(head)) {
-                table = proc_sys_lookup_table(dentry, head->ctl_table);
-                if (!table)
+        for (h = sysctl_head_next(NULL); h; h = sysctl_head_next(h)) {
+                if (h->attached_to != table)
                        continue;
+                ret = scan(h, h->attached_by, &pos, filp, dirent, filldir);
-                for (; table->ctl_name || table->procname; table++, pos++) {
+                if (ret) {
-                        /* Can't do anything without a proc name */
+                        sysctl_head_finish(h);
-                        if (!table->procname)
+                        break;
-                                continue;
-                        if (pos < filp->f_pos)
-                                continue;
-                        if (proc_sys_fill_cache(filp, dirent, filldir, table) < 0)
-                                goto out;
-                        filp->f_pos = pos + 1;
                }
        }
        ret = 1;
@@ -343,53 +292,24 @@ out:
        return ret;
 }
-static int proc_sys_permission(struct inode *inode, int mask, struct nameidata *nd)
+static int proc_sys_permission(struct inode *inode, int mask)
 {
        /*
         * sysctl entries that are not writeable,
         * are _NOT_ writeable, capabilities or not.
         */
-        struct ctl_table_header *head;
+        struct ctl_table_header *head = grab_header(inode);
-        struct ctl_table *table;
+        struct ctl_table *table = PROC_I(inode)->sysctl_entry;
-        struct dentry *dentry;
-        int mode;
-        int depth;
        int error;
-        head = NULL;
+        if (IS_ERR(head))
-        depth = PROC_I(inode)->fd;
+                return PTR_ERR(head);
-        /* First check the cached permissions, in case we don't have
-         * enough information to lookup the sysctl table entry.
-         */
-        error = -EACCES;
-        mode = inode->i_mode;
-        if (current->euid == 0)
-                mode >>= 6;
-        else if (in_group_p(0))
-                mode >>= 3;
-        if ((mode & mask & (MAY_READ|MAY_WRITE|MAY_EXEC)) == mask)
-                error = 0;
-        /* If we can't get a sysctl table entry the permission
-         * checks on the cached mode will have to be enough.
-         */
-        if (!nd || !depth)
-                goto out;
-        dentry = nd->path.dentry;
+        if (!table) /* global root - r-xr-xr-x */
-        table = do_proc_sys_lookup(dentry->d_parent, &dentry->d_name, &head);
+                error = mask & MAY_WRITE ? -EACCES : 0;
+        else /* Use the permissions on the sysctl table entry */
+                error = sysctl_perm(head->root, table, mask);
-        /* If the entry does not exist deny permission */
-        error = -EACCES;
-        if (!table)
-                goto out;
-        /* Use the permissions on the sysctl table entry */
-        error = sysctl_perm(head->root, table, mask);
-out:
        sysctl_head_finish(head);
        return error;
 }
@@ -409,33 +329,70 @@ static int proc_sys_setattr(struct dentry *dentry, struct iattr *attr)
        return error;
 }
-/* I'm lazy and don't distinguish between files and directories,
+static int proc_sys_getattr(struct vfsmount *mnt, struct dentry *dentry, struct kstat *stat)
- * until access time.
+{
- */
+        struct inode *inode = dentry->d_inode;
+        struct ctl_table_header *head = grab_header(inode);
+        struct ctl_table *table = PROC_I(inode)->sysctl_entry;
+        if (IS_ERR(head))
+                return PTR_ERR(head);
+        generic_fillattr(inode, stat);
+        if (table)
+                stat->mode = (stat->mode & S_IFMT) | table->mode;
+        sysctl_head_finish(head);
+        return 0;
+}
 static const struct file_operations proc_sys_file_operations = {
        .read           = proc_sys_read,
        .write          = proc_sys_write,
+};
+static const struct file_operations proc_sys_dir_file_operations = {
        .readdir        = proc_sys_readdir,
 };
 static const struct inode_operations proc_sys_inode_operations = {
+        .permission     = proc_sys_permission,
+        .setattr        = proc_sys_setattr,
+        .getattr        = proc_sys_getattr,
+};
+static const struct inode_operations proc_sys_dir_operations = {
        .lookup         = proc_sys_lookup,
        .permission     = proc_sys_permission,
        .setattr        = proc_sys_setattr,
+        .getattr        = proc_sys_getattr,
 };
 static int proc_sys_revalidate(struct dentry *dentry, struct nameidata *nd)
 {
-        struct ctl_table_header *head;
+        return !PROC_I(dentry->d_inode)->sysctl->unregistering;
-        struct ctl_table *table;
+}
-        table = do_proc_sys_lookup(dentry->d_parent, &dentry->d_name, &head);
-        proc_sys_refresh_inode(dentry->d_inode, table);
+static int proc_sys_delete(struct dentry *dentry)
-        sysctl_head_finish(head);
+{
-        return !!table;
+        return !!PROC_I(dentry->d_inode)->sysctl->unregistering;
+}
+static int proc_sys_compare(struct dentry *dir, struct qstr *qstr,
+                            struct qstr *name)
+{
+        struct dentry *dentry = container_of(qstr, struct dentry, d_name);
+        if (qstr->len != name->len)
+                return 1;
+        if (memcmp(qstr->name, name->name, name->len))
+                return 1;
+        return !sysctl_is_seen(PROC_I(dentry->d_inode)->sysctl);
 }
 static struct dentry_operations proc_sys_dentry_operations = {
        .d_revalidate   = proc_sys_revalidate,
+        .d_delete       = proc_sys_delete,
+        .d_compare      = proc_sys_compare,
 };
 static struct proc_dir_entry *proc_sys_root;
@@ -443,8 +400,8 @@ static struct proc_dir_entry *proc_sys_root;
 int proc_sys_init(void)
 {
        proc_sys_root = proc_mkdir("sys", NULL);
-        proc_sys_root->proc_iops = &proc_sys_inode_operations;
+        proc_sys_root->proc_iops = &proc_sys_dir_operations;
-        proc_sys_root->proc_fops = &proc_sys_file_operations;
+        proc_sys_root->proc_fops = &proc_sys_dir_file_operations;
        proc_sys_root->nlink = 0;
        return 0;
 }
diff --git a/fs/qnx4/inode.c b/fs/qnx4/inode.c
index b31ab78052b3..2aad1044b84c 100644
--- a/fs/qnx4/inode.c
+++ b/fs/qnx4/inode.c
@@ -553,7 +553,7 @@ static void qnx4_destroy_inode(struct inode *inode)
        kmem_cache_free(qnx4_inode_cachep, qnx4_i(inode));
 }
-static void init_once(struct kmem_cache *cachep, void *foo)
+static void init_once(void *foo)
 {
        struct qnx4_inode_info *ei = (struct qnx4_inode_info *) foo;
diff --git a/fs/reiserfs/super.c b/fs/reiserfs/super.c
index 2ec748ba0bd3..879e54d35c2d 100644
--- a/fs/reiserfs/super.c
+++ b/fs/reiserfs/super.c
@@ -521,7 +521,7 @@ static void reiserfs_destroy_inode(struct inode *inode)
        kmem_cache_free(reiserfs_inode_cachep, REISERFS_I(inode));
 }
-static void init_once(struct kmem_cache * cachep, void *foo)
+static void init_once(void *foo)
 {
        struct reiserfs_inode_info *ei = (struct reiserfs_inode_info *)foo;
diff --git a/fs/reiserfs/xattr.c b/fs/reiserfs/xattr.c
index d7c4935c1034..bb3cb5b7cdb2 100644
--- a/fs/reiserfs/xattr.c
+++ b/fs/reiserfs/xattr.c
@@ -1250,7 +1250,7 @@ static int reiserfs_check_acl(struct inode *inode, int mask)
        return error;
 }
-int reiserfs_permission(struct inode *inode, int mask, struct nameidata *nd)
+int reiserfs_permission(struct inode *inode, int mask)
 {
        /*
         * We don't do permission checks on the internal objects.
diff --git a/fs/romfs/inode.c b/fs/romfs/inode.c
index 3f13d491c7c7..8e51a2aaa977 100644
--- a/fs/romfs/inode.c
+++ b/fs/romfs/inode.c
@@ -577,7 +577,7 @@ static void romfs_destroy_inode(struct inode *inode)
        kmem_cache_free(romfs_inode_cachep, ROMFS_I(inode));
 }
-static void init_once(struct kmem_cache *cachep, void *foo)
+static void init_once(void *foo)
 {
        struct romfs_inode_info *ei = foo;
diff --git a/fs/smbfs/file.c b/fs/smbfs/file.c
index 2294783320cb..e4f8d51a5553 100644
--- a/fs/smbfs/file.c
+++ b/fs/smbfs/file.c
@@ -408,7 +408,7 @@ smb_file_release(struct inode *inode, struct file * file)
 * privileges, so we need our own check for this.
 */
 static int
-smb_file_permission(struct inode *inode, int mask, struct nameidata *nd)
+smb_file_permission(struct inode *inode, int mask)
 {
        int mode = inode->i_mode;
        int error = 0;
@@ -417,7 +417,7 @@ smb_file_permission(struct inode *inode, int mask, struct nameidata *nd)
        /* Look at user permissions */
        mode >>= 6;
-        if ((mode & 7 & mask) != mask)
+        if (mask & ~mode & (MAY_READ | MAY_WRITE | MAY_EXEC))
                error = -EACCES;
        return error;
 }
diff --git a/fs/smbfs/inode.c b/fs/smbfs/inode.c
index 376ef3ee6ed7..3528f40ffb0f 100644
--- a/fs/smbfs/inode.c
+++ b/fs/smbfs/inode.c
@@ -67,7 +67,7 @@ static void smb_destroy_inode(struct inode *inode)
        kmem_cache_free(smb_inode_cachep, SMB_I(inode));
 }
-static void init_once(struct kmem_cache *cachep, void *foo)
+static void init_once(void *foo)
 {
        struct smb_inode_info *ei = (struct smb_inode_info *) foo;
diff --git a/fs/splice.c b/fs/splice.c
index 399442179d89..b30311ba8af6 100644
--- a/fs/splice.c
+++ b/fs/splice.c
@@ -772,7 +772,7 @@ generic_file_splice_write_nolock(struct pipe_inode_info *pipe, struct file *out,
        ssize_t ret;
        int err;
-        err = remove_suid(out->f_path.dentry);
+        err = file_remove_suid(out);
        if (unlikely(err))
                return err;
@@ -830,7 +830,7 @@ generic_file_splice_write(struct pipe_inode_info *pipe, struct file *out,
        ssize_t ret;
        inode_double_lock(inode, pipe->inode);
-        ret = remove_suid(out->f_path.dentry);
+        ret = file_remove_suid(out);
        if (likely(!ret))
                ret = __splice_from_pipe(pipe, &sd, pipe_to_file);
        inode_double_unlock(inode, pipe->inode);
@@ -1161,36 +1161,6 @@ static long do_splice(struct file *in, loff_t __user *off_in,
 }
 /*
- * Do a copy-from-user while holding the mmap_semaphore for reading, in a
- * manner safe from deadlocking with simultaneous mmap() (grabbing mmap_sem
- * for writing) and page faulting on the user memory pointed to by src.
- * This assumes that we will very rarely hit the partial != 0 path, or this
- * will not be a win.
- */
-static int copy_from_user_mmap_sem(void *dst, const void __user *src, size_t n)
-{
-        int partial;
-        if (!access_ok(VERIFY_READ, src, n))
-                return -EFAULT;
-        pagefault_disable();
-        partial = __copy_from_user_inatomic(dst, src, n);
-        pagefault_enable();
-        /*
-         * Didn't copy everything, drop the mmap_sem and do a faulting copy
-         */
-        if (unlikely(partial)) {
-                up_read(&current->mm->mmap_sem);
-                partial = copy_from_user(dst, src, n);
-                down_read(&current->mm->mmap_sem);
-        }
-        return partial;
-}
-/*
 * Map an iov into an array of pages and offset/length tupples. With the
 * partial_page structure, we can map several non-contiguous ranges into
 * our ones pages[] map instead of splitting that operation into pieces.
@@ -1203,8 +1173,6 @@ static int get_iovec_page_array(const struct iovec __user *iov,
 {
        int buffers = 0, error = 0;
-        down_read(&current->mm->mmap_sem);
        while (nr_vecs) {
                unsigned long off, npages;
                struct iovec entry;
@@ -1213,7 +1181,7 @@ static int get_iovec_page_array(const struct iovec __user *iov,
                int i;
                error = -EFAULT;
-                if (copy_from_user_mmap_sem(&entry, iov, sizeof(entry)))
+                if (copy_from_user(&entry, iov, sizeof(entry)))
                        break;
                base = entry.iov_base;
@@ -1247,9 +1215,8 @@ static int get_iovec_page_array(const struct iovec __user *iov,
                if (npages > PIPE_BUFFERS - buffers)
                        npages = PIPE_BUFFERS - buffers;
-                error = get_user_pages(current, current->mm,
+                error = get_user_pages_fast((unsigned long)base, npages,
-                                       (unsigned long) base, npages, 0, 0,
+                                        0, &pages[buffers]);
-                                       &pages[buffers], NULL);
                if (unlikely(error <= 0))
                        break;
@@ -1288,8 +1255,6 @@ static int get_iovec_page_array(const struct iovec __user *iov,
                iov++;
        }
-        up_read(&current->mm->mmap_sem);
        if (buffers)
                return buffers;
diff --git a/fs/stat.c b/fs/stat.c
index 9cf41f719d50..7c46fbeb8b76 100644
--- a/fs/stat.c
+++ b/fs/stat.c
@@ -57,13 +57,13 @@ EXPORT_SYMBOL(vfs_getattr);
 int vfs_stat_fd(int dfd, char __user *name, struct kstat *stat)
 {
-        struct nameidata nd;
+        struct path path;
        int error;
-        error = __user_walk_fd(dfd, name, LOOKUP_FOLLOW, &nd);
+        error = user_path_at(dfd, name, LOOKUP_FOLLOW, &path);
        if (!error) {
-                error = vfs_getattr(nd.path.mnt, nd.path.dentry, stat);
+                error = vfs_getattr(path.mnt, path.dentry, stat);
-                path_put(&nd.path);
+                path_put(&path);
        }
        return error;
 }
@@ -77,13 +77,13 @@ EXPORT_SYMBOL(vfs_stat);
 int vfs_lstat_fd(int dfd, char __user *name, struct kstat *stat)
 {
-        struct nameidata nd;
+        struct path path;
        int error;
-        error = __user_walk_fd(dfd, name, 0, &nd);
+        error = user_path_at(dfd, name, 0, &path);
        if (!error) {
-                error = vfs_getattr(nd.path.mnt, nd.path.dentry, stat);
+                error = vfs_getattr(path.mnt, path.dentry, stat);
-                path_put(&nd.path);
+                path_put(&path);
        }
        return error;
 }
@@ -291,29 +291,29 @@ asmlinkage long sys_newfstat(unsigned int fd, struct stat __user *statbuf)
        return error;
 }
-asmlinkage long sys_readlinkat(int dfd, const char __user *path,
+asmlinkage long sys_readlinkat(int dfd, const char __user *pathname,
                                char __user *buf, int bufsiz)
 {
-        struct nameidata nd;
+        struct path path;
        int error;
        if (bufsiz <= 0)
                return -EINVAL;
-        error = __user_walk_fd(dfd, path, 0, &nd);
+        error = user_path_at(dfd, pathname, 0, &path);
        if (!error) {
-                struct inode *inode = nd.path.dentry->d_inode;
+                struct inode *inode = path.dentry->d_inode;
                error = -EINVAL;
                if (inode->i_op && inode->i_op->readlink) {
-                        error = security_inode_readlink(nd.path.dentry);
+                        error = security_inode_readlink(path.dentry);
                        if (!error) {
-                                touch_atime(nd.path.mnt, nd.path.dentry);
+                                touch_atime(path.mnt, path.dentry);
-                                error = inode->i_op->readlink(nd.path.dentry,
+                                error = inode->i_op->readlink(path.dentry,
                                                              buf, bufsiz);
                        }
                }
-                path_put(&nd.path);
+                path_put(&path);
        }
        return error;
 }
diff --git a/fs/sysfs/dir.c b/fs/sysfs/dir.c
index c1a7efb310bf..aedaeba82ae5 100644
--- a/fs/sysfs/dir.c
+++ b/fs/sysfs/dir.c
@@ -459,11 +459,8 @@ int sysfs_add_one(struct sysfs_addrm_cxt *acxt, struct sysfs_dirent *sd)
        int ret;
        ret = __sysfs_add_one(acxt, sd);
-        if (ret == -EEXIST) {
+        WARN(ret == -EEXIST, KERN_WARNING "sysfs: duplicate filename '%s' "
-                printk(KERN_WARNING "sysfs: duplicate filename '%s' "
                       "can not be created\n", sd->s_name);
-                WARN_ON(1);
-        }
        return ret;
 }
diff --git a/fs/sysfs/file.c b/fs/sysfs/file.c
index 3f07893ff896..c9e4e5091da1 100644
--- a/fs/sysfs/file.c
+++ b/fs/sysfs/file.c
@@ -337,9 +337,8 @@ static int sysfs_open_file(struct inode *inode, struct file *file)
        if (kobj->ktype && kobj->ktype->sysfs_ops)
                ops = kobj->ktype->sysfs_ops;
        else {
-                printk(KERN_ERR "missing sysfs attribute operations for "
+                WARN(1, KERN_ERR "missing sysfs attribute operations for "
                       "kobject: %s\n", kobject_name(kobj));
-                WARN_ON(1);
                goto err_out;
        }
diff --git a/fs/sysfs/group.c b/fs/sysfs/group.c
index eeba38417b1d..fe611949a7f7 100644
--- a/fs/sysfs/group.c
+++ b/fs/sysfs/group.c
@@ -134,9 +134,8 @@ void sysfs_remove_group(struct kobject * kobj,
        if (grp->name) {
                sd = sysfs_get_dirent(dir_sd, grp->name);
                if (!sd) {
-                        printk(KERN_WARNING "sysfs group %p not found for "
+                        WARN(!sd, KERN_WARNING "sysfs group %p not found for "
                                "kobject '%s'\n", grp, kobject_name(kobj));
-                        WARN_ON(!sd);
                        return;
                }
        } else
diff --git a/fs/sysv/inode.c b/fs/sysv/inode.c
index c5d60de0658f..df0d435baa48 100644
--- a/fs/sysv/inode.c
+++ b/fs/sysv/inode.c
@@ -326,7 +326,7 @@ static void sysv_destroy_inode(struct inode *inode)
        kmem_cache_free(sysv_inode_cachep, SYSV_I(inode));
 }
-static void init_once(struct kmem_cache *cachep, void *p)
+static void init_once(void *p)
 {
        struct sysv_inode_info *si = (struct sysv_inode_info *)p;
diff --git a/fs/ubifs/file.c b/fs/ubifs/file.c
index 005a3b854d96..8565e586e533 100644
--- a/fs/ubifs/file.c
+++ b/fs/ubifs/file.c
@@ -53,6 +53,7 @@
 #include "ubifs.h"
 #include <linux/mount.h>
+#include <linux/namei.h>
 static int read_block(struct inode *inode, void *addr, unsigned int block,
                      struct ubifs_data_node *dn)
diff --git a/fs/ubifs/super.c b/fs/ubifs/super.c
index 00eb9c68ad03..ca1e2d4e03cc 100644
--- a/fs/ubifs/super.c
+++ b/fs/ubifs/super.c
@@ -1841,7 +1841,7 @@ static struct file_system_type ubifs_fs_type = {
 /*
 * Inode slab cache constructor.
 */
-static void inode_slab_ctor(struct kmem_cache *cachep, void *obj)
+static void inode_slab_ctor(void *obj)
 {
        struct ubifs_inode *ui = obj;
        inode_init_once(&ui->vfs_inode);
diff --git a/fs/udf/super.c b/fs/udf/super.c
index 44cc702f96cc..5698bbf83bbf 100644
--- a/fs/udf/super.c
+++ b/fs/udf/super.c
@@ -148,7 +148,7 @@ static void udf_destroy_inode(struct inode *inode)
        kmem_cache_free(udf_inode_cachep, UDF_I(inode));
 }
-static void init_once(struct kmem_cache *cachep, void *foo)
+static void init_once(void *foo)
 {
        struct udf_inode_info *ei = (struct udf_inode_info *)foo;
diff --git a/fs/ufs/super.c b/fs/ufs/super.c
index 227c9d700040..3e30e40aa24d 100644
--- a/fs/ufs/super.c
+++ b/fs/ufs/super.c
@@ -1302,7 +1302,7 @@ static void ufs_destroy_inode(struct inode *inode)
        kmem_cache_free(ufs_inode_cachep, UFS_I(inode));
 }
-static void init_once(struct kmem_cache * cachep, void *foo)
+static void init_once(void *foo)
 {
        struct ufs_inode_info *ei = (struct ufs_inode_info *) foo;
diff --git a/fs/utimes.c b/fs/utimes.c
index b6b664e7145e..6929e3e91d05 100644
--- a/fs/utimes.c
+++ b/fs/utimes.c
@@ -48,66 +48,22 @@ static bool nsec_valid(long nsec)
        return nsec >= 0 && nsec <= 999999999;
 }
-/* If times==NULL, set access and modification to current time,
+static int utimes_common(struct path *path, struct timespec *times)
- * must be owner or have write permission.
- * Else, update from *times, must be owner or super user.
- */
-long do_utimes(int dfd, char __user *filename, struct timespec *times, int flags)
 {
        int error;
-        struct nameidata nd;
-        struct dentry *dentry;
-        struct inode *inode;
        struct iattr newattrs;
-        struct file *f = NULL;
+        struct inode *inode = path->dentry->d_inode;
-        struct vfsmount *mnt;
-        error = -EINVAL;
-        if (times && (!nsec_valid(times[0].tv_nsec) ||
-                      !nsec_valid(times[1].tv_nsec))) {
-                goto out;
-        }
-        if (flags & ~AT_SYMLINK_NOFOLLOW)
-                goto out;
-        if (filename == NULL && dfd != AT_FDCWD) {
-                error = -EINVAL;
-                if (flags & AT_SYMLINK_NOFOLLOW)
-                        goto out;
-                error = -EBADF;
+        error = mnt_want_write(path->mnt);
-                f = fget(dfd);
-                if (!f)
-                        goto out;
-                dentry = f->f_path.dentry;
-                mnt = f->f_path.mnt;
-        } else {
-                error = __user_walk_fd(dfd, filename, (flags & AT_SYMLINK_NOFOLLOW) ? 0 : LOOKUP_FOLLOW, &nd);
-                if (error)
-                        goto out;
-                dentry = nd.path.dentry;
-                mnt = nd.path.mnt;
-        }
-        inode = dentry->d_inode;
-        error = mnt_want_write(mnt);
        if (error)
-                goto dput_and_out;
+                goto out;
        if (times && times[0].tv_nsec == UTIME_NOW &&
                     times[1].tv_nsec == UTIME_NOW)
                times = NULL;
-        /* In most cases, the checks are done in inode_change_ok() */
        newattrs.ia_valid = ATTR_CTIME | ATTR_MTIME | ATTR_ATIME;
        if (times) {
-                error = -EPERM;
-                if (IS_APPEND(inode) || IS_IMMUTABLE(inode))
-                        goto mnt_drop_write_and_out;
                if (times[0].tv_nsec == UTIME_OMIT)
                        newattrs.ia_valid &= ~ATTR_ATIME;
                else if (times[0].tv_nsec != UTIME_NOW) {
@@ -123,21 +79,13 @@ long do_utimes(int dfd, char __user *filename, struct timespec *times, int flags
                        newattrs.ia_mtime.tv_nsec = times[1].tv_nsec;
                        newattrs.ia_valid |= ATTR_MTIME_SET;
                }
                /*
-                 * For the UTIME_OMIT/UTIME_NOW and UTIME_NOW/UTIME_OMIT
+                 * Tell inode_change_ok(), that this is an explicit time
-                 * cases, we need to make an extra check that is not done by
+                 * update, even if neither ATTR_ATIME_SET nor ATTR_MTIME_SET
-                 * inode_change_ok().
+                 * were used.
                 */
-                if (((times[0].tv_nsec == UTIME_NOW &&
+                newattrs.ia_valid |= ATTR_TIMES_SET;
-                            times[1].tv_nsec == UTIME_OMIT)
-                     ||
-                     (times[0].tv_nsec == UTIME_OMIT &&
-                            times[1].tv_nsec == UTIME_NOW))
-                    && !is_owner_or_cap(inode))
-                        goto mnt_drop_write_and_out;
        } else {
                /*
                 * If times is NULL (or both times are UTIME_NOW),
                 * then we need to check permissions, because
@@ -148,21 +96,76 @@ long do_utimes(int dfd, char __user *filename, struct timespec *times, int flags
                        goto mnt_drop_write_and_out;
                if (!is_owner_or_cap(inode)) {
-                        error = permission(inode, MAY_WRITE, NULL);
+                        error = inode_permission(inode, MAY_WRITE);
                        if (error)
                                goto mnt_drop_write_and_out;
                }
        }
        mutex_lock(&inode->i_mutex);
-        error = notify_change(dentry, &newattrs);
+        error = notify_change(path->dentry, &newattrs);
        mutex_unlock(&inode->i_mutex);
 mnt_drop_write_and_out:
-        mnt_drop_write(mnt);
+        mnt_drop_write(path->mnt);
-dput_and_out:
+out:
-        if (f)
+        return error;
-                fput(f);
+}
-        else
-                path_put(&nd.path);
+/*
+ * do_utimes - change times on filename or file descriptor
+ * @dfd: open file descriptor, -1 or AT_FDCWD
+ * @filename: path name or NULL
+ * @times: new times or NULL
+ * @flags: zero or more flags (only AT_SYMLINK_NOFOLLOW for the moment)
+ *
+ * If filename is NULL and dfd refers to an open file, then operate on
+ * the file.  Otherwise look up filename, possibly using dfd as a
+ * starting point.
+ *
+ * If times==NULL, set access and modification to current time,
+ * must be owner or have write permission.
+ * Else, update from *times, must be owner or super user.
+ */
+long do_utimes(int dfd, char __user *filename, struct timespec *times, int flags)
+{
+        int error = -EINVAL;
+        if (times && (!nsec_valid(times[0].tv_nsec) ||
+                      !nsec_valid(times[1].tv_nsec))) {
+                goto out;
+        }
+        if (flags & ~AT_SYMLINK_NOFOLLOW)
+                goto out;
+        if (filename == NULL && dfd != AT_FDCWD) {
+                struct file *file;
+                if (flags & AT_SYMLINK_NOFOLLOW)
+                        goto out;
+                file = fget(dfd);
+                error = -EBADF;
+                if (!file)
+                        goto out;
+                error = utimes_common(&file->f_path, times);
+                fput(file);
+        } else {
+                struct path path;
+                int lookup_flags = 0;
+                if (!(flags & AT_SYMLINK_NOFOLLOW))
+                        lookup_flags |= LOOKUP_FOLLOW;
+                error = user_path_at(dfd, filename, lookup_flags, &path);
+                if (error)
+                        goto out;
+                error = utimes_common(&path, times);
+                path_put(&path);
+        }
 out:
        return error;
 }
diff --git a/fs/xattr.c b/fs/xattr.c
index 4706a8b1f495..468377e66531 100644
--- a/fs/xattr.c
+++ b/fs/xattr.c
@@ -63,7 +63,7 @@ xattr_permission(struct inode *inode, const char *name, int mask)
                        return -EPERM;
        }
-        return permission(inode, mask, NULL);
+        return inode_permission(inode, mask);
 }
 int
@@ -252,40 +252,40 @@ setxattr(struct dentry *d, const char __user *name, const void __user *value,
 }
 asmlinkage long
-sys_setxattr(const char __user *path, const char __user *name,
+sys_setxattr(const char __user *pathname, const char __user *name,
             const void __user *value, size_t size, int flags)
 {
-        struct nameidata nd;
+        struct path path;
        int error;
-        error = user_path_walk(path, &nd);
+        error = user_path(pathname, &path);
        if (error)
                return error;
-        error = mnt_want_write(nd.path.mnt);
+        error = mnt_want_write(path.mnt);
        if (!error) {
-                error = setxattr(nd.path.dentry, name, value, size, flags);
+                error = setxattr(path.dentry, name, value, size, flags);
-                mnt_drop_write(nd.path.mnt);
+                mnt_drop_write(path.mnt);
        }
-        path_put(&nd.path);
+        path_put(&path);
        return error;
 }
 asmlinkage long
-sys_lsetxattr(const char __user *path, const char __user *name,
+sys_lsetxattr(const char __user *pathname, const char __user *name,
              const void __user *value, size_t size, int flags)
 {
-        struct nameidata nd;
+        struct path path;
        int error;
-        error = user_path_walk_link(path, &nd);
+        error = user_lpath(pathname, &path);
        if (error)
                return error;
-        error = mnt_want_write(nd.path.mnt);
+        error = mnt_want_write(path.mnt);
        if (!error) {
-                error = setxattr(nd.path.dentry, name, value, size, flags);
+                error = setxattr(path.dentry, name, value, size, flags);
-                mnt_drop_write(nd.path.mnt);
+                mnt_drop_write(path.mnt);
        }
-        path_put(&nd.path);
+        path_put(&path);
        return error;
 }
@@ -350,32 +350,32 @@ getxattr(struct dentry *d, const char __user *name, void __user *value,
 }
 asmlinkage ssize_t
-sys_getxattr(const char __user *path, const char __user *name,
+sys_getxattr(const char __user *pathname, const char __user *name,
             void __user *value, size_t size)
 {
-        struct nameidata nd;
+        struct path path;
        ssize_t error;
-        error = user_path_walk(path, &nd);
+        error = user_path(pathname, &path);
        if (error)
                return error;
-        error = getxattr(nd.path.dentry, name, value, size);
+        error = getxattr(path.dentry, name, value, size);
-        path_put(&nd.path);
+        path_put(&path);
        return error;
 }
 asmlinkage ssize_t
-sys_lgetxattr(const char __user *path, const char __user *name, void __user *value,
+sys_lgetxattr(const char __user *pathname, const char __user *name, void __user *value,
              size_t size)
 {
-        struct nameidata nd;
+        struct path path;
        ssize_t error;
-        error = user_path_walk_link(path, &nd);
+        error = user_lpath(pathname, &path);
        if (error)
                return error;
-        error = getxattr(nd.path.dentry, name, value, size);
+        error = getxattr(path.dentry, name, value, size);
-        path_put(&nd.path);
+        path_put(&path);
        return error;
 }
@@ -425,30 +425,30 @@ listxattr(struct dentry *d, char __user *list, size_t size)
 }
 asmlinkage ssize_t
-sys_listxattr(const char __user *path, char __user *list, size_t size)
+sys_listxattr(const char __user *pathname, char __user *list, size_t size)
 {
-        struct nameidata nd;
+        struct path path;
        ssize_t error;
-        error = user_path_walk(path, &nd);
+        error = user_path(pathname, &path);
        if (error)
                return error;
-        error = listxattr(nd.path.dentry, list, size);
+        error = listxattr(path.dentry, list, size);
-        path_put(&nd.path);
+        path_put(&path);
        return error;
 }
 asmlinkage ssize_t
-sys_llistxattr(const char __user *path, char __user *list, size_t size)
+sys_llistxattr(const char __user *pathname, char __user *list, size_t size)
 {
-        struct nameidata nd;
+        struct path path;
        ssize_t error;
-        error = user_path_walk_link(path, &nd);
+        error = user_lpath(pathname, &path);
        if (error)
                return error;
-        error = listxattr(nd.path.dentry, list, size);
+        error = listxattr(path.dentry, list, size);
-        path_put(&nd.path);
+        path_put(&path);
        return error;
 }
@@ -486,38 +486,38 @@ removexattr(struct dentry *d, const char __user *name)
 }
 asmlinkage long
-sys_removexattr(const char __user *path, const char __user *name)
+sys_removexattr(const char __user *pathname, const char __user *name)
 {
-        struct nameidata nd;
+        struct path path;
        int error;
-        error = user_path_walk(path, &nd);
+        error = user_path(pathname, &path);
        if (error)
                return error;
-        error = mnt_want_write(nd.path.mnt);
+        error = mnt_want_write(path.mnt);
        if (!error) {
-                error = removexattr(nd.path.dentry, name);
+                error = removexattr(path.dentry, name);
-                mnt_drop_write(nd.path.mnt);
+                mnt_drop_write(path.mnt);
        }
-        path_put(&nd.path);
+        path_put(&path);
        return error;
 }
 asmlinkage long
-sys_lremovexattr(const char __user *path, const char __user *name)
+sys_lremovexattr(const char __user *pathname, const char __user *name)
 {
-        struct nameidata nd;
+        struct path path;
        int error;
-        error = user_path_walk_link(path, &nd);
+        error = user_lpath(pathname, &path);
        if (error)
                return error;
-        error = mnt_want_write(nd.path.mnt);
+        error = mnt_want_write(path.mnt);
        if (!error) {
-                error = removexattr(nd.path.dentry, name);
+                error = removexattr(path.dentry, name);
-                mnt_drop_write(nd.path.mnt);
+                mnt_drop_write(path.mnt);
        }
-        path_put(&nd.path);
+        path_put(&path);
        return error;
 }
diff --git a/fs/xfs/linux-2.6/kmem.h b/fs/xfs/linux-2.6/kmem.h
index 5e9564902976..a20683cf74dd 100644
--- a/fs/xfs/linux-2.6/kmem.h
+++ b/fs/xfs/linux-2.6/kmem.h
@@ -79,7 +79,7 @@ kmem_zone_init(int size, char *zone_name)
 static inline kmem_zone_t *
 kmem_zone_init_flags(int size, char *zone_name, unsigned long flags,
-                     void (*construct)(kmem_zone_t *, void *))
+                     void (*construct)(void *))
 {
        return kmem_cache_create(zone_name, size, 0, flags, construct);
 }
diff --git a/fs/xfs/linux-2.6/xfs_ioctl.c b/fs/xfs/linux-2.6/xfs_ioctl.c
index a42ba9d71156..01939ba2d8de 100644
--- a/fs/xfs/linux-2.6/xfs_ioctl.c
+++ b/fs/xfs/linux-2.6/xfs_ioctl.c
@@ -84,17 +84,15 @@ xfs_find_handle(
        switch (cmd) {
        case XFS_IOC_PATH_TO_FSHANDLE:
        case XFS_IOC_PATH_TO_HANDLE: {
-                struct nameidata        nd;
+                struct path path;
-                int                     error;
+                int error = user_lpath((const char __user *)hreq.path, &path);
-                error = user_path_walk_link((const char __user *)hreq.path, &nd);
                if (error)
                        return error;
-                ASSERT(nd.path.dentry);
+                ASSERT(path.dentry);
-                ASSERT(nd.path.dentry->d_inode);
+                ASSERT(path.dentry->d_inode);
-                inode = igrab(nd.path.dentry->d_inode);
+                inode = igrab(path.dentry->d_inode);
-                path_put(&nd.path);
+                path_put(&path);
                break;
        }
diff --git a/fs/xfs/linux-2.6/xfs_iops.c b/fs/xfs/linux-2.6/xfs_iops.c
index 2bf287ef5489..5fc61c824bb9 100644
--- a/fs/xfs/linux-2.6/xfs_iops.c
+++ b/fs/xfs/linux-2.6/xfs_iops.c
@@ -589,8 +589,7 @@ xfs_check_acl(
 STATIC int
 xfs_vn_permission(
        struct inode            *inode,
-        int                     mask,
+        int                     mask)
-        struct nameidata        *nd)
 {
        return generic_permission(inode, mask, xfs_check_acl);
 }
diff --git a/fs/xfs/linux-2.6/xfs_lrw.c b/fs/xfs/linux-2.6/xfs_lrw.c
index 5e3b57516ec7..82333b3e118e 100644
--- a/fs/xfs/linux-2.6/xfs_lrw.c
+++ b/fs/xfs/linux-2.6/xfs_lrw.c
@@ -711,7 +711,7 @@ start:
             !capable(CAP_FSETID)) {
                error = xfs_write_clear_setuid(xip);
                if (likely(!error))
-                        error = -remove_suid(file->f_path.dentry);
+                        error = -file_remove_suid(file);
                if (unlikely(error)) {
                        goto out_unlock_internal;
                }
diff --git a/fs/xfs/linux-2.6/xfs_super.c b/fs/xfs/linux-2.6/xfs_super.c
index 742b2c7852c1..943381284e2e 100644
--- a/fs/xfs/linux-2.6/xfs_super.c
+++ b/fs/xfs/linux-2.6/xfs_super.c
@@ -843,7 +843,6 @@ xfs_fs_destroy_inode(
 STATIC void
 xfs_fs_inode_init_once(
-        kmem_zone_t             *zonep,
        void                    *vnode)
 {
        inode_init_once(vn_to_inode((bhv_vnode_t *)vnode));
author	Ingo Molnar <mingo@elte.hu>	2008-07-28 15:14:43 -0400
committer	Ingo Molnar <mingo@elte.hu>	2008-07-28 15:14:43 -0400
commit	414f746d232d41ed6ae8632c4495ae795373c44b (patch)
tree	167f9bc8f139c6e82e6732b38c7a938b8a9d31cd /fs
parent	5a7a201c51c324876d00a54e7208af6af12d1ca4 (diff)
parent	c9272c4f9fbe2087beb3392f526dc5b19efaa56b (diff)