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| author | Frederic Weisbecker <fweisbec@gmail.com> | 2009-12-30 07:40:39 +0100 |
|---|---|---|
| committer | Frederic Weisbecker <fweisbec@gmail.com> | 2010-01-02 01:59:48 +0100 |
| commit | 835d5247d98f46e35d007dcfa6215e526ca33360 (patch) | |
| tree | 83caead46ca375781c93648e54adb6873204f569 /fs | |
| parent | 8b513f56d4e117f11cf0760abcc030eedefc45c3 (diff) | |
| download | linux-835d5247d98f46e35d007dcfa6215e526ca33360.tar.gz linux-835d5247d98f46e35d007dcfa6215e526ca33360.tar.bz2 linux-835d5247d98f46e35d007dcfa6215e526ca33360.zip | |
reiserfs: Safely acquire i_mutex from xattr_rmdir
Relax the reiserfs lock before taking the inode mutex from
xattr_rmdir() to avoid the usual reiserfs lock <-> inode mutex
bad dependency.
Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Tested-by: Christian Kujau <lists@nerdbynature.de>
Cc: Alexander Beregalov <a.beregalov@gmail.com>
Cc: Chris Mason <chris.mason@oracle.com>
Cc: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/reiserfs/xattr.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/fs/reiserfs/xattr.c b/fs/reiserfs/xattr.c index bfdac66fd8e2..9623cfe2371c 100644 --- a/fs/reiserfs/xattr.c +++ b/fs/reiserfs/xattr.c @@ -98,7 +98,8 @@ static int xattr_rmdir(struct inode *dir, struct dentry *dentry) BUG_ON(!mutex_is_locked(&dir->i_mutex)); vfs_dq_init(dir); - mutex_lock_nested(&dentry->d_inode->i_mutex, I_MUTEX_CHILD); + reiserfs_mutex_lock_nested_safe(&dentry->d_inode->i_mutex, + I_MUTEX_CHILD, dir->i_sb); dentry_unhash(dentry); error = dir->i_op->rmdir(dir, dentry); if (!error) |