From: Glauber Costa <glommer@parallels.com>
Date: Fri, 20 Jan 2012 04:57:15 +0000 (+0000)
Subject: cgroup: make sure memcg margin is 0 when over limit
X-Git-Tag: v3.3-rc2~37^2~23
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=8cfd14ad1eb52e44cb1fe7b47a68126e45e04026;p=pandora-kernel.git

cgroup: make sure memcg margin is 0 when over limit

For the memcg sock code, we'll need to register allocations
that are temporarily over limit. Let's make sure that margin
is 0 in this case.

I am keeping this as a separate patch, so that if any weirdness
interaction appears in the future, we can now exactly what caused
it.

Suggested by Johannes Weiner

Signed-off-by: Glauber Costa <glommer@parallels.com>
CC: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
CC: Johannes Weiner <hannes@cmpxchg.org>
CC: Michal Hocko <mhocko@suse.cz>
CC: Tejun Heo <tj@kernel.org>
CC: Li Zefan <lizf@cn.fujitsu.com>
Acked-by: Tejun Heo <tj@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

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