From: Tejun Heo <tj@kernel.org>
Date: Fri, 9 Nov 2012 17:12:29 +0000 (-0800)
Subject: cgroup: use rculist ops for cgroup->children
X-Git-Tag: omap-for-v3.8/fixes-for-merge-window-v4-signed~57^2~42
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=eb6fd5040ee799009173daa49c3e7aa0362167c9;p=pandora-kernel.git

cgroup: use rculist ops for cgroup->children

Use RCU safe list operations for cgroup->children.  This will be used
to implement cgroup children / descendant walking which can be used by
controllers.

Note that cgroup_create() now puts a new cgroup at the end of the
->children list instead of head.  This isn't strictly necessary but is
done so that the iteration order is more conventional.

Signed-off-by: Tejun Heo <tj@kernel.org>
Reviewed-by: Michal Hocko <mhocko@suse.cz>
Reviewed-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Acked-by: Li Zefan <lizefan@huawei.com>
---

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