Gitweb: http://git.kernel.org/linus/e638c1394010859a015a3b533ee452d768e62cea
Commit: e638c1394010859a015a3b533ee452d768e62cea
Parent: c12ddba09394c60e1120e6997794fa6ed52da884
Author: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
AuthorDate: Tue Apr 21 12:24:41 2009 -0700
Committer: Linus Torvalds <torvalds@linux-foundation.org>
CommitDate: Tue Apr 21 13:41:48 2009 -0700
memcg: use rcu_dereference to access mm->owner
mm->owner should be accessed with rcu_dereference().
Reported-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Acked-by: Balbir Singh <balbir@linux.vnet.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---
include/linux/memcontrol.h | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/include/linux/memcontrol.h b/include/linux/memcontrol.h
index 18146c9..a9e3b76 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;
}
--
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