From 4df46240a1312161e3c794f6ace50ef7eb5ff3d7 Mon Sep 17 00:00:00 2001 From: Ingo Molnar Date: Sun, 27 Aug 2006 01:23:56 -0700 Subject: [PATCH] [PATCH] lockdep: annotate reiserfs 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 Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- fs/reiserfs/xattr.c | 2 +- include/linux/fs.h | 3 ++- 2 files changed, 3 insertions(+), 2 deletions(-) diff --git a/fs/reiserfs/xattr.c b/fs/reiserfs/xattr.c index 39fedaa..d935fb9 100644 --- a/fs/reiserfs/xattr.c +++ b/fs/reiserfs/xattr.c @@ -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)) { diff --git a/include/linux/fs.h b/include/linux/fs.h index 2561020..555bc19 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -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 }; -- 2.7.4