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authorFrederic Weisbecker <fweisbec@gmail.com>2009-12-30 07:40:39 +0100
committerFrederic Weisbecker <fweisbec@gmail.com>2010-01-02 01:59:48 +0100
commit835d5247d98f46e35d007dcfa6215e526ca33360 (patch)
tree83caead46ca375781c93648e54adb6873204f569
parent8b513f56d4e117f11cf0760abcc030eedefc45c3 (diff)
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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>
-rw-r--r--fs/reiserfs/xattr.c3
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)