tree a815aca84438215643689cc3687db1ba003d4298
parent 4050377b509b326c14b275fedb2f69b46f37a7a9
author Li Zefan <lizefan@huawei.com> 1373324436 -0700
committer Linus Torvalds <torvalds@linux-foundation.org> 1373391204 -0700

memcg: don't need to get a reference to the parent

The cgroup core guarantees it's always safe to access the parent.

Signed-off-by: Li Zefan <lizefan@huawei.com>
Acked-by: Michal Hocko <mhocko@suse.cz>
Acked-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: Tejun Heo <tj@kernel.org>
Cc: Glauber Costa <glommer@openvz.org>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>