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[PATCH] mqueue: nested locking annotation

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Fix http://bugzilla.kernel.org/show_bug.cgi?id=8130

Signed-off-by: Peter Zijlstra <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Peter Zijlstra 2007-03-06 01:42:09 -08:00 • committed by Linus Torvalds
commit 7a434814c7
1 changed files with 2 additions and 1 deletions
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3
ipc/mqueue.c
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@ -731,7 +731,8 @@ asmlinkage long sys_mq_unlink(const char __user *u_name)
if (IS_ERR(name))
return PTR_ERR(name);
mutex_lock(&mqueue_mnt->mnt_root->d_inode->i_mutex);
mutex_lock_nested(&mqueue_mnt->mnt_root->d_inode->i_mutex,
I_MUTEX_PARENT);
dentry = lookup_one_len(name, mqueue_mnt->mnt_root, strlen(name));
if (IS_ERR(dentry)) {
err = PTR_ERR(dentry);