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| author | KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> | 2009-04-21 12:24:41 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2009-04-21 13:41:48 -0700 |
| commit | e638c1394010859a015a3b533ee452d768e62cea (patch) | |
| tree | b8db247c01e86835afe6b0d6cd897543e76c23d0 | |
| parent | c12ddba09394c60e1120e6997794fa6ed52da884 (diff) | |
| download | linux-e638c1394010859a015a3b533ee452d768e62cea.tar.gz linux-e638c1394010859a015a3b533ee452d768e62cea.tar.bz2 linux-e638c1394010859a015a3b533ee452d768e62cea.zip | |
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>
| -rw-r--r-- | 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 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; } |