Merge branch 'linus' into perfcounters/core

Merge reason: This brach was on -rc1, refresh it to almost-rc4 to pick up
              the latest upstream fixes.

Signed-off-by: Ingo Molnar <mingo@elte.hu>

1 files changed, 1 insertions, 1 deletions

diff --git a/include/linux/memcontrol.h b/include/linux/memcontrol.h
index 18146c980b68..a9e3b76aa884 100644
--- a/include/linux/memcontrol.h
+++ b/include/linux/memcontrol.h
@@ -75,7 +75,7 @@ int mm_match_cgroup(const struct mm_struct *mm, const struct mem_cgroup *cgroup)
 {
 	struct mem_cgroup *mem;
 	rcu_read_lock();
-	mem = mem_cgroup_from_task((mm)->owner);
+	mem = mem_cgroup_from_task(rcu_dereference((mm)->owner));
 	rcu_read_unlock();
 	return cgroup == mem;
 }