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[PATCH] lockdep: annotate reiserfs

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reiserfs seems to have another locking level layer for the i_mutex due to the
xattrs-are-a-directory thing.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Ingo Molnar 2006-08-27 01:23:56 -07:00 committed by Linus Torvalds
parent 36e8e57832
commit 4df46240a1
2 changed files with 3 additions and 2 deletions
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2
fs/reiserfs/xattr.c
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@ -424,7 +424,7 @@ int xattr_readdir(struct file *file, filldir_t filler, void *buf)
int res = -ENOTDIR;
if (!file->f_op || !file->f_op->readdir)
goto out;
mutex_lock(&inode->i_mutex);
mutex_lock_nested(&inode->i_mutex, I_MUTEX_XATTR);
// down(&inode->i_zombie);
res = -ENOENT;
if (!IS_DEADDIR(inode)) {

3
include/linux/fs.h
View File

@ -570,13 +570,14 @@ struct inode {
* 3: quota file
*
* The locking order between these classes is
* parent -> child -> normal -> quota
* parent -> child -> normal -> xattr -> quota
*/
enum inode_i_mutex_lock_class
{
I_MUTEX_NORMAL,
I_MUTEX_PARENT,
I_MUTEX_CHILD,
I_MUTEX_XATTR,
I_MUTEX_QUOTA
};