From 971ff49355387fef41d1327434d8939721a4eb35 Mon Sep 17 00:00:00 2001
From: Zefan Li <lizefan@huawei.com>
Date: Thu, 18 Sep 2014 16:06:19 +0800
Subject: [PATCH] cgroup: use a per-cgroup work for release agent

Instead of using a global work to schedule release agent on removable
cgroups, we change to use a per-cgroup work to do this, which makes
the code much simpler.

v2: use a dedicated work instead of reusing css->destroy_work. (Tejun)

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