Merge branch 'master' of /home/src/linux-2.6/

15 files changed, 138 insertions, 116 deletions

diff --git a/fs/9p/conv.c b/fs/9p/conv.c
index 1554731bd653..18121af99d3e 100644
--- a/fs/9p/conv.c
+++ b/fs/9p/conv.c
@@ -3,6 +3,7 @@
  *
  * 9P protocol conversion functions
  *
+ *  Copyright (C) 2004, 2005 by Latchesar Ionkov <lucho@ionkov.net>
  *  Copyright (C) 2004 by Eric Van Hensbergen <ericvh@gmail.com>
  *  Copyright (C) 2002 by Ron Minnich <rminnich@lanl.gov>
  *
@@ -55,66 +56,70 @@ static inline int buf_check_overflow(struct cbuf *buf)
         return buf->p > buf->ep;
 }
 
-static inline void buf_check_size(struct cbuf *buf, int len)
+static inline int buf_check_size(struct cbuf *buf, int len)
 {
         if (buf->p+len > buf->ep) {
                 if (buf->p < buf->ep) {
                         eprintk(KERN_ERR, "buffer overflow\n");
                         buf->p = buf->ep + 1;
+                        return 0;
                 }
         }
+
+        return 1;
 }
 
 static inline void *buf_alloc(struct cbuf *buf, int len)
 {
         void *ret = NULL;
 
-        buf_check_size(buf, len);
-        ret = buf->p;
-        buf->p += len;
+        if (buf_check_size(buf, len)) {
+                ret = buf->p;
+                buf->p += len;
+        }
 
         return ret;
 }
 
 static inline void buf_put_int8(struct cbuf *buf, u8 val)
 {
-        buf_check_size(buf, 1);
-
-        buf->p[0] = val;
-        buf->p++;
+        if (buf_check_size(buf, 1)) {
+                buf->p[0] = val;
+                buf->p++;
+        }
 }
 
 static inline void buf_put_int16(struct cbuf *buf, u16 val)
 {
-        buf_check_size(buf, 2);
-
-        *(__le16 *) buf->p = cpu_to_le16(val);
-        buf->p += 2;
+        if (buf_check_size(buf, 2)) {
+                *(__le16 *) buf->p = cpu_to_le16(val);
+                buf->p += 2;
+        }
 }
 
 static inline void buf_put_int32(struct cbuf *buf, u32 val)
 {
-        buf_check_size(buf, 4);
-
-        *(__le32 *)buf->p = cpu_to_le32(val);
-        buf->p += 4;
+        if (buf_check_size(buf, 4)) {
+                *(__le32 *)buf->p = cpu_to_le32(val);
+                buf->p += 4;
+        }
 }
 
 static inline void buf_put_int64(struct cbuf *buf, u64 val)
 {
-        buf_check_size(buf, 8);
-
-        *(__le64 *)buf->p = cpu_to_le64(val);
-        buf->p += 8;
+        if (buf_check_size(buf, 8)) {
+                *(__le64 *)buf->p = cpu_to_le64(val);
+                buf->p += 8;
+        }
 }
 
 static inline void buf_put_stringn(struct cbuf *buf, const char *s, u16 slen)
 {
-        buf_check_size(buf, slen + 2);
-
-        buf_put_int16(buf, slen);
-        memcpy(buf->p, s, slen);
-        buf->p += slen;
+        if (buf_check_size(buf, slen + 2)) {
+                buf_put_int16(buf, slen);
+                memcpy(buf->p, s, slen);
+                buf->p += slen;
+        }
 }
 
 static inline void buf_put_string(struct cbuf *buf, const char *s)
@@ -124,20 +129,20 @@ static inline void buf_put_string(struct cbuf *buf, const char *s)
 
 static inline void buf_put_data(struct cbuf *buf, void *data, u32 datalen)
 {
-        buf_check_size(buf, datalen);
-
-        memcpy(buf->p, data, datalen);
-        buf->p += datalen;
+        if (buf_check_size(buf, datalen)) {
+                memcpy(buf->p, data, datalen);
+                buf->p += datalen;
+        }
 }
 
 static inline u8 buf_get_int8(struct cbuf *buf)
 {
         u8 ret = 0;
 
-        buf_check_size(buf, 1);
-        ret = buf->p[0];
-
-        buf->p++;
+        if (buf_check_size(buf, 1)) {
+                ret = buf->p[0];
+                buf->p++;
+        }
 
         return ret;
 }
@@ -146,10 +151,10 @@ static inline u16 buf_get_int16(struct cbuf *buf)
 {
         u16 ret = 0;
 
-        buf_check_size(buf, 2);
-        ret = le16_to_cpu(*(__le16 *)buf->p);
-
-        buf->p += 2;
+        if (buf_check_size(buf, 2)) {
+                ret = le16_to_cpu(*(__le16 *)buf->p);
+                buf->p += 2;
+        }
 
         return ret;
 }
@@ -158,10 +163,10 @@ static inline u32 buf_get_int32(struct cbuf *buf)
 {
         u32 ret = 0;
 
-        buf_check_size(buf, 4);
-        ret = le32_to_cpu(*(__le32 *)buf->p);
-
-        buf->p += 4;
+        if (buf_check_size(buf, 4)) {
+                ret = le32_to_cpu(*(__le32 *)buf->p);
+                buf->p += 4;
+        }
 
         return ret;
 }
@@ -170,10 +175,10 @@ static inline u64 buf_get_int64(struct cbuf *buf)
 {
         u64 ret = 0;
 
-        buf_check_size(buf, 8);
-        ret = le64_to_cpu(*(__le64 *)buf->p);
-
-        buf->p += 8;
+        if (buf_check_size(buf, 8)) {
+                ret = le64_to_cpu(*(__le64 *)buf->p);
+                buf->p += 8;
+        }
 
         return ret;
 }
@@ -181,27 +186,35 @@ static inline u64 buf_get_int64(struct cbuf *buf)
 static inline int
 buf_get_string(struct cbuf *buf, char *data, unsigned int datalen)
 {
+        u16 len = 0;
+
+        len = buf_get_int16(buf);
+        if (!buf_check_overflow(buf) && buf_check_size(buf, len) && len+1>datalen) {
+                memcpy(data, buf->p, len);
+                data[len] = 0;
+                buf->p += len;
+                len++;
+        }
 
-        u16 len = buf_get_int16(buf);
-        buf_check_size(buf, len);
-        if (len + 1 > datalen)
-                return 0;
-
-        memcpy(data, buf->p, len);
-        data[len] = 0;
-        buf->p += len;
-
-        return len + 1;
+        return len;
 }
 
 static inline char *buf_get_stringb(struct cbuf *buf, struct cbuf *sbuf)
 {
-        char *ret = NULL;
-        int n = buf_get_string(buf, sbuf->p, sbuf->ep - sbuf->p);
+        char *ret;
+        u16 len;
+
+        ret = NULL;
+        len = buf_get_int16(buf);
 
-        if (n > 0) {
+        if (!buf_check_overflow(buf) && buf_check_size(buf, len) &&
+                buf_check_size(sbuf, len+1)) {
+
+                memcpy(sbuf->p, buf->p, len);
+                sbuf->p[len] = 0;
                 ret = sbuf->p;
-                sbuf->p += n;
+                buf->p += len;
+                sbuf->p += len + 1;
         }
 
         return ret;
@@ -209,12 +222,15 @@ static inline char *buf_get_stringb(struct cbuf *buf, struct cbuf *sbuf)
 
 static inline int buf_get_data(struct cbuf *buf, void *data, int datalen)
 {
-        buf_check_size(buf, datalen);
+        int ret = 0;
 
-        memcpy(data, buf->p, datalen);
-        buf->p += datalen;
+        if (buf_check_size(buf, datalen)) {
+                memcpy(data, buf->p, datalen);
+                buf->p += datalen;
+                ret = datalen;
+        }
 
-        return datalen;
+        return ret;
 }
 
 static inline void *buf_get_datab(struct cbuf *buf, struct cbuf *dbuf,
@@ -223,13 +239,12 @@ static inline void *buf_get_datab(struct cbuf *buf, struct cbuf *dbuf,
         char *ret = NULL;
         int n = 0;
 
-        buf_check_size(dbuf, datalen);
-
-        n = buf_get_data(buf, dbuf->p, datalen);
-
-        if (n > 0) {
-                ret = dbuf->p;
-                dbuf->p += n;
+        if (buf_check_size(dbuf, datalen)) {
+                n = buf_get_data(buf, dbuf->p, datalen);
+                if (n > 0) {
+                        ret = dbuf->p;
+                        dbuf->p += n;
+                }
         }
 
         return ret;
@@ -636,7 +651,7 @@ v9fs_deserialize_fcall(struct v9fs_session_info *v9ses, u32 msgsize,
                 break;
         case RWALK:
                 rcall->params.rwalk.nwqid = buf_get_int16(bufp);
-                rcall->params.rwalk.wqids = buf_alloc(bufp,
+                rcall->params.rwalk.wqids = buf_alloc(dbufp,
                       rcall->params.rwalk.nwqid * sizeof(struct v9fs_qid));
                 if (rcall->params.rwalk.wqids)
                         for (i = 0; i < rcall->params.rwalk.nwqid; i++) {
diff --git a/fs/9p/v9fs.c b/fs/9p/v9fs.c
index 13bdbbab4387..82303f3bf76f 100644
--- a/fs/9p/v9fs.c
+++ b/fs/9p/v9fs.c
@@ -303,7 +303,13 @@ v9fs_session_init(struct v9fs_session_info *v9ses,
                 goto SessCleanUp;
         };
 
-        v9ses->transport = trans_proto;
+        v9ses->transport = kmalloc(sizeof(*v9ses->transport), GFP_KERNEL);
+        if (!v9ses->transport) {
+                retval = -ENOMEM;
+                goto SessCleanUp;
+        }
+
+        memmove(v9ses->transport, trans_proto, sizeof(*v9ses->transport));
 
         if ((retval = v9ses->transport->init(v9ses, dev_name, data)) < 0) {
                 eprintk(KERN_ERR, "problem initializing transport\n");
diff --git a/fs/9p/vfs_inode.c b/fs/9p/vfs_inode.c
index 0c13fc600049..b16322db5ce6 100644
--- a/fs/9p/vfs_inode.c
+++ b/fs/9p/vfs_inode.c
@@ -1063,8 +1063,8 @@ static int v9fs_vfs_readlink(struct dentry *dentry, char __user * buffer,
         int ret;
         char *link = __getname();
 
-        if (strlen(link) < buflen)
-                buflen = strlen(link);
+        if (buflen > PATH_MAX)
+                buflen = PATH_MAX;
 
         dprintk(DEBUG_VFS, " dentry: %s (%p)\n", dentry->d_iname, dentry);
 
diff --git a/fs/9p/vfs_super.c b/fs/9p/vfs_super.c
index 868f350b2c5f..1e2b2b54d300 100644
--- a/fs/9p/vfs_super.c
+++ b/fs/9p/vfs_super.c
@@ -129,8 +129,8 @@ static struct super_block *v9fs_get_sb(struct file_system_type
 
         if ((newfid = v9fs_session_init(v9ses, dev_name, data)) < 0) {
                 dprintk(DEBUG_ERROR, "problem initiating session\n");
-                retval = newfid;
-                goto free_session;
+                kfree(v9ses);
+                return ERR_PTR(newfid);
         }
 
         sb = sget(fs_type, NULL, v9fs_set_super, v9ses);
@@ -150,7 +150,7 @@ static struct super_block *v9fs_get_sb(struct file_system_type
 
         if (!root) {
                 retval = -ENOMEM;
-                goto release_inode;
+                goto put_back_sb;
         }
 
         sb->s_root = root;
@@ -159,7 +159,7 @@ static struct super_block *v9fs_get_sb(struct file_system_type
         root_fid = v9fs_fid_create(root);
         if (root_fid == NULL) {
                 retval = -ENOMEM;
-                goto release_dentry;
+                goto put_back_sb;
         }
 
         root_fid->fidopen = 0;
@@ -182,25 +182,15 @@ static struct super_block *v9fs_get_sb(struct file_system_type
 
         if (stat_result < 0) {
                 retval = stat_result;
-                goto release_dentry;
+                goto put_back_sb;
         }
 
         return sb;
 
-      release_dentry:
-        dput(sb->s_root);
-
-      release_inode:
-        iput(inode);
-
-      put_back_sb:
+put_back_sb:
+        /* deactivate_super calls v9fs_kill_super which will frees the rest */
         up_write(&sb->s_umount);
         deactivate_super(sb);
-        v9fs_session_close(v9ses);
-
-      free_session:
-        kfree(v9ses);
-
         return ERR_PTR(retval);
 }
 
diff --git a/fs/cifs/cifsfs.c b/fs/cifs/cifsfs.c
index 8cc23e7d0d5d..1ebf7dafc1d7 100644
--- a/fs/cifs/cifsfs.c
+++ b/fs/cifs/cifsfs.c
@@ -781,6 +781,8 @@ static int cifs_oplock_thread(void * dummyarg)
 
         oplockThread = current;
         do {
+                if (try_to_freeze()) 
+                        continue;
                 set_current_state(TASK_INTERRUPTIBLE);
                 
                 schedule_timeout(1*HZ);  
diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c
index 2335f14a1583..47360156cc54 100644
--- a/fs/cifs/connect.c
+++ b/fs/cifs/connect.c
@@ -344,6 +344,8 @@ cifs_demultiplex_thread(struct TCP_Server_Info *server)
         }
 
         while (server->tcpStatus != CifsExiting) {
+                if (try_to_freeze())
+                        continue;
                 if (bigbuf == NULL) {
                         bigbuf = cifs_buf_get();
                         if(bigbuf == NULL) {
diff --git a/fs/ext3/balloc.c b/fs/ext3/balloc.c
index e463dca008e4..0213db4911a2 100644
--- a/fs/ext3/balloc.c
+++ b/fs/ext3/balloc.c
@@ -1410,7 +1410,7 @@ unsigned long ext3_count_free_blocks(struct super_block *sb)
         unsigned long desc_count;
         struct ext3_group_desc *gdp;
         int i;
-        unsigned long ngroups;
+        unsigned long ngroups = EXT3_SB(sb)->s_groups_count;
 #ifdef EXT3FS_DEBUG
         struct ext3_super_block *es;
         unsigned long bitmap_count, x;
@@ -1421,7 +1421,8 @@ unsigned long ext3_count_free_blocks(struct super_block *sb)
         desc_count = 0;
         bitmap_count = 0;
         gdp = NULL;
-        for (i = 0; i < EXT3_SB(sb)->s_groups_count; i++) {
+
+        for (i = 0; i < ngroups; i++) {
                 gdp = ext3_get_group_desc(sb, i, NULL);
                 if (!gdp)
                         continue;
@@ -1443,7 +1444,6 @@ unsigned long ext3_count_free_blocks(struct super_block *sb)
         return bitmap_count;
 #else
         desc_count = 0;
-        ngroups = EXT3_SB(sb)->s_groups_count;
         smp_rmb();
         for (i = 0; i < ngroups; i++) {
                 gdp = ext3_get_group_desc(sb, i, NULL);
diff --git a/fs/ext3/resize.c b/fs/ext3/resize.c
index 2c9f81278d5d..57f79106267d 100644
--- a/fs/ext3/resize.c
+++ b/fs/ext3/resize.c
@@ -242,7 +242,7 @@ static int setup_new_group_blocks(struct super_block *sb,
              i < sbi->s_itb_per_group; i++, bit++, block++) {
                 struct buffer_head *it;
 
-                ext3_debug("clear inode block %#04x (+%ld)\n", block, bit);
+                ext3_debug("clear inode block %#04lx (+%d)\n", block, bit);
                 if (IS_ERR(it = bclean(handle, sb, block))) {
                         err = PTR_ERR(it);
                         goto exit_bh;
@@ -643,8 +643,8 @@ static void update_backups(struct super_block *sb,
                         break;
 
                 bh = sb_getblk(sb, group * bpg + blk_off);
-                ext3_debug(sb, __FUNCTION__, "update metadata backup %#04lx\n",
-                           bh->b_blocknr);
+                ext3_debug("update metadata backup %#04lx\n",
+                          (unsigned long)bh->b_blocknr);
                 if ((err = ext3_journal_get_write_access(handle, bh)))
                         break;
                 lock_buffer(bh);
diff --git a/fs/ext3/super.c b/fs/ext3/super.c
index a93c3609025d..9e24ceb019fe 100644
--- a/fs/ext3/super.c
+++ b/fs/ext3/super.c
@@ -512,15 +512,14 @@ static void ext3_clear_inode(struct inode *inode)
 
 static int ext3_show_options(struct seq_file *seq, struct vfsmount *vfs)
 {
-        struct ext3_sb_info *sbi = EXT3_SB(vfs->mnt_sb);
+        struct super_block *sb = vfs->mnt_sb;
+        struct ext3_sb_info *sbi = EXT3_SB(sb);
 
-        if (sbi->s_mount_opt & EXT3_MOUNT_JOURNAL_DATA)
+        if (test_opt(sb, DATA_FLAGS) == EXT3_MOUNT_JOURNAL_DATA)
                 seq_puts(seq, ",data=journal");
-
-        if (sbi->s_mount_opt & EXT3_MOUNT_ORDERED_DATA)
+        else if (test_opt(sb, DATA_FLAGS) == EXT3_MOUNT_ORDERED_DATA)
                 seq_puts(seq, ",data=ordered");
-
-        if (sbi->s_mount_opt & EXT3_MOUNT_WRITEBACK_DATA)
+        else if (test_opt(sb, DATA_FLAGS) == EXT3_MOUNT_WRITEBACK_DATA)
                 seq_puts(seq, ",data=writeback");
 
 #if defined(CONFIG_QUOTA)
diff --git a/fs/jfs/inode.c b/fs/jfs/inode.c
index 0ec62d5310db..9f942ca8e4e3 100644
--- a/fs/jfs/inode.c
+++ b/fs/jfs/inode.c
@@ -129,8 +129,7 @@ void jfs_delete_inode(struct inode *inode)
         jfs_info("In jfs_delete_inode, inode = 0x%p", inode);
 
         if (!is_bad_inode(inode) &&
-            (JFS_IP(inode)->fileset == cpu_to_le32(FILESYSTEM_I))) {
-
+            (JFS_IP(inode)->fileset == FILESYSTEM_I)) {
                 truncate_inode_pages(&inode->i_data, 0);
 
                 if (test_cflag(COMMIT_Freewmap, inode))
diff --git a/fs/jfs/jfs_dmap.c b/fs/jfs/jfs_dmap.c
index c739626f5bf1..eadf319bee22 100644
--- a/fs/jfs/jfs_dmap.c
+++ b/fs/jfs/jfs_dmap.c
@@ -3055,7 +3055,7 @@ static int cntlz(u32 value)
  * RETURN VALUES:
  *      log2 number of blocks
  */
-int blkstol2(s64 nb)
+static int blkstol2(s64 nb)
 {
         int l2nb;
         s64 mask;               /* meant to be signed */
diff --git a/fs/jfs/jfs_txnmgr.c b/fs/jfs/jfs_txnmgr.c
index c7a92f9deb2b..9b71ed2674fe 100644
--- a/fs/jfs/jfs_txnmgr.c
+++ b/fs/jfs/jfs_txnmgr.c
@@ -725,6 +725,9 @@ struct tlock *txLock(tid_t tid, struct inode *ip, struct metapage * mp,
         else
                 tlck->flag = tlckINODELOCK;
 
+        if (S_ISDIR(ip->i_mode))
+                tlck->flag |= tlckDIRECTORY;
+
         tlck->type = 0;
 
         /* bind the tlock and the page */
@@ -1009,6 +1012,8 @@ struct tlock *txMaplock(tid_t tid, struct inode *ip, int type)
 
         /* bind the tlock and the object */
         tlck->flag = tlckINODELOCK;
+        if (S_ISDIR(ip->i_mode))
+                tlck->flag |= tlckDIRECTORY;
         tlck->ip = ip;
         tlck->mp = NULL;
 
@@ -1077,6 +1082,8 @@ struct linelock *txLinelock(struct linelock * tlock)
         linelock->flag = tlckLINELOCK;
         linelock->maxcnt = TLOCKLONG;
         linelock->index = 0;
+        if (tlck->flag & tlckDIRECTORY)
+                linelock->flag |= tlckDIRECTORY;
 
         /* append linelock after tlock */
         linelock->next = tlock->next;
@@ -2070,8 +2077,8 @@ static void xtLog(struct jfs_log * log, struct tblock * tblk, struct lrd * lrd,
  *
  * function:    log from maplock of freed data extents;
  */
-void mapLog(struct jfs_log * log, struct tblock * tblk, struct lrd * lrd,
-            struct tlock * tlck)
+static void mapLog(struct jfs_log * log, struct tblock * tblk, struct lrd * lrd,
+                   struct tlock * tlck)
 {
         struct pxd_lock *pxdlock;
         int i, nlock;
@@ -2209,7 +2216,7 @@ void txEA(tid_t tid, struct inode *ip, dxd_t * oldea, dxd_t * newea)
  * function: synchronously write pages locked by transaction
  *              after txLog() but before txUpdateMap();
  */
-void txForce(struct tblock * tblk)
+static void txForce(struct tblock * tblk)
 {
         struct tlock *tlck;
         lid_t lid, next;
@@ -2358,7 +2365,7 @@ static void txUpdateMap(struct tblock * tblk)
                          */
                         else {  /* (maplock->flag & mlckFREE) */
 
-                                if (S_ISDIR(tlck->ip->i_mode))
+                                if (tlck->flag & tlckDIRECTORY)
                                         txFreeMap(ipimap, maplock,
                                                   tblk, COMMIT_PWMAP);
                                 else
diff --git a/fs/jfs/jfs_txnmgr.h b/fs/jfs/jfs_txnmgr.h
index 59ad0f6b7231..0e4dc4514c47 100644
--- a/fs/jfs/jfs_txnmgr.h
+++ b/fs/jfs/jfs_txnmgr.h
@@ -122,6 +122,7 @@ extern struct tlock *TxLock;	/* transaction lock table */
 #define tlckLOG                 0x0800
 /* updateMap state */
 #define tlckUPDATEMAP           0x0080
+#define tlckDIRECTORY           0x0040
 /* freeLock state */
 #define tlckFREELOCK            0x0008
 #define tlckWRITEPAGE           0x0004
diff --git a/fs/nfs/read.c b/fs/nfs/read.c
index 6ceb1d471f20..9758ebd49905 100644
--- a/fs/nfs/read.c
+++ b/fs/nfs/read.c
@@ -184,14 +184,13 @@ static void nfs_readpage_release(struct nfs_page *req)
 {
         unlock_page(req->wb_page);
 
-        nfs_clear_request(req);
-        nfs_release_request(req);
-
         dprintk("NFS: read done (%s/%Ld %d@%Ld)\n",
                         req->wb_context->dentry->d_inode->i_sb->s_id,
                         (long long)NFS_FILEID(req->wb_context->dentry->d_inode),
                         req->wb_bytes,
                         (long long)req_offset(req));
+        nfs_clear_request(req);
+        nfs_release_request(req);
 }
 
 /*
diff --git a/fs/proc/base.c b/fs/proc/base.c
index fb34f88a4a74..3b33f94020db 100644
--- a/fs/proc/base.c
+++ b/fs/proc/base.c
@@ -343,7 +343,8 @@ static int proc_root_link(struct inode *inode, struct dentry **dentry, struct vf
 
 /* Same as proc_root_link, but this addionally tries to get fs from other
  * threads in the group */
-static int proc_task_root_link(struct inode *inode, struct dentry **dentry, struct vfsmount **mnt)
+static int proc_task_root_link(struct inode *inode, struct dentry **dentry,
+                                struct vfsmount **mnt)
 {
         struct fs_struct *fs;
         int result = -ENOENT;
@@ -357,9 +358,10 @@ static int proc_task_root_link(struct inode *inode, struct dentry **dentry, stru
         } else {
                 /* Try to get fs from other threads */
                 task_unlock(leader);
-                struct task_struct *task = leader;
                 read_lock(&tasklist_lock);
-                if (pid_alive(task)) {
+                if (pid_alive(leader)) {
+                        struct task_struct *task = leader;
+
                         while ((task = next_thread(task)) != leader) {
                                 task_lock(task);
                                 fs = task->fs;