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cgroups: Fix a lockdep warning at cgroup removal

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Commit 2fd6b7f5 ("fs: dcache scale subdirs") forgot to annotate a dentry
lock, which caused a lockdep warning.

Reported-by: Valdis Kletnieks <[email protected]>
Signed-off-by: Li Zefan <[email protected]>
This commit is contained in:
Li Zefan authored and Nick Piggin committed 2011-01-14 08:46:29 +00:00
1 parent 7b9337aaf9
commit 3ec762ad8b
1 file changed
+1 -1
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kernel/cgroup.c
+1 -1
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@@ -912,7 +912,7 @@ static void cgroup_d_remove_dir(struct dentry *dentry)
parent = dentry->d_parent;
spin_lock(&parent->d_lock);
spin_lock(&dentry->d_lock);
spin_lock_nested(&dentry->d_lock, DENTRY_D_LOCK_NESTED);
list_del_init(&dentry->d_u.d_child);
spin_unlock(&dentry->d_lock);
spin_unlock(&parent->d_lock);