From: Tejun Heo <tj@kernel.org>
Date: Tue, 18 Nov 2014 07:49:51 +0000 (-0500)
Subject: cgroup: add cgroup_subsys->css_released()
X-Git-Tag: omap-for-v3.19/fixes-rc1~117^2~2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=7d172cc89b8589e4173d0c73a1ddaae408f29c9d;p=pandora-kernel.git

cgroup: add cgroup_subsys->css_released()

Add a new cgroup subsys callback css_released().  This is called when
the reference count of the css (cgroup_subsys_state) reaches zero
before RCU scheduling free.

Signed-off-by: Tejun Heo <tj@kernel.org>
Acked-by: Zefan Li <lizefan@huawei.com>
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