From c33bd8354f3a3bb26a98d2b6bf600b7b35657328 Mon Sep 17 00:00:00 2001
From: Li Zefan <lizefan@huawei.com>
Date: Thu, 12 Sep 2013 15:13:19 -0700
Subject: [PATCH] memcg: remove redundant code in
 mem_cgroup_force_empty_write()

vfs guarantees the cgroup won't be destroyed, so it's redundant to get a
css reference.

Signed-off-by: Li Zefan <lizefan@huawei.com>
Acked-by: Michal Hocko <mhocko@suse.cz>
Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Tejun Heo <tj@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---
Reading git-format-patch failed