[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 <mingo@elte.hu> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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@ -424,7 +424,7 @@ int xattr_readdir(struct file *file, filldir_t filler, void *buf)
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int res = -ENOTDIR;
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if (!file->f_op || !file->f_op->readdir)
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goto out;
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mutex_lock(&inode->i_mutex);
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mutex_lock_nested(&inode->i_mutex, I_MUTEX_XATTR);
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// down(&inode->i_zombie);
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res = -ENOENT;
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if (!IS_DEADDIR(inode)) {
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@ -570,13 +570,14 @@ struct inode {
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* 3: quota file
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*
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* The locking order between these classes is
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* parent -> child -> normal -> quota
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* parent -> child -> normal -> xattr -> quota
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*/
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enum inode_i_mutex_lock_class
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{
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I_MUTEX_NORMAL,
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I_MUTEX_PARENT,
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I_MUTEX_CHILD,
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I_MUTEX_XATTR,
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I_MUTEX_QUOTA
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};
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