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| author | Yan <yanzheng@21cn.com> | 2007-10-25 15:49:25 -0400 |
|---|---|---|
| committer | Chris Mason <chris.mason@oracle.com> | 2008-09-25 11:03:57 -0400 |
| commit | 134d45120164141c0847daf5222aaec77e04724a (patch) | |
| tree | 096a7b7853281b28bd6059cf610f38a8ec65f07a /fs/btrfs | |
| parent | 0d9f7f3e27a92b07212090a1772fdbb3a92fef81 (diff) | |
| download | linux-134d45120164141c0847daf5222aaec77e04724a.tar.bz2 | |
Fix ENOTEMPTY check in btrfs_rmdir
The ENOTEMPTY check in btrfs_rmdir isn't reliable. It's possible that
the backward search finds . or .. at first, then some other directory
entry. In that case, btrfs_rmdir delete . or .. improperly. The
patch also fixes a fs_mutex unlock issue in btrfs_rmdir.
--
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Diffstat (limited to 'fs/btrfs')
| -rw-r--r-- | fs/btrfs/inode.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c index b74a831fab19..7e4b2c1b4a56 100644 --- a/fs/btrfs/inode.c +++ b/fs/btrfs/inode.c @@ -448,6 +448,9 @@ static int btrfs_rmdir(struct inode *dir, struct dentry *dentry) char *goodnames = ".."; unsigned long nr; + if (inode->i_size > BTRFS_EMPTY_DIR_SIZE) + return -ENOTEMPTY; + path = btrfs_alloc_path(); BUG_ON(!path); mutex_lock(&root->fs_info->fs_mutex); @@ -501,9 +504,9 @@ static int btrfs_rmdir(struct inode *dir, struct dentry *dentry) out: btrfs_release_path(root, path); btrfs_free_path(path); - mutex_unlock(&root->fs_info->fs_mutex); nr = trans->blocks_used; ret = btrfs_end_transaction(trans, root); + mutex_unlock(&root->fs_info->fs_mutex); btrfs_btree_balance_dirty(root, nr); if (ret && !err) err = ret; |