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authorPeter Zijlstra <a.p.zijlstra@chello.nl>2007-03-06 01:42:09 -0800
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-03-06 09:30:25 -0800
commit7a434814c7a6500b08bf4419ba8712b152d08d08 (patch)
tree0d97d3d1d1239b3a58a2b5097f63578efc7a0f6d /ipc
parent4a6753ca08541437f4c243708d2011b4758e17e8 (diff)
downloadvexpress-lsk-7a434814c7a6500b08bf4419ba8712b152d08d08.tar.gz
[PATCH] mqueue: nested locking annotation
Fix http://bugzilla.kernel.org/show_bug.cgi?id=8130 Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'ipc')
-rw-r--r--ipc/mqueue.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/ipc/mqueue.c b/ipc/mqueue.c
index 0b5ecbe5f04..554ac368be7 100644
--- a/ipc/mqueue.c
+++ b/ipc/mqueue.c
@@ -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);