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Date: Mon, 14 Jan 2013 10:55:12 -0800
From: Tejun Heo <tj@kernel.org>
To: Li Zefan <lizefan@huawei.com>
Cc: Colin Cross <ccross@google.com>, Mike Galbraith <efault@gmx.de>,
        LKML <linux-kernel@vger.kernel.org>, Cgroups <cgroups@vger.kernel.org>
Subject: Re: [PATCH 2/2] cgroup: remove synchronize_rcu() from
 rebind_subsystems()
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On Mon, Jan 14, 2013 at 05:24:18PM +0800, Li Zefan wrote:
> Nothing's protected by RCU in rebind_subsystems(), and I can't think
> of a reason why it is needed.
> 
> Signed-off-by: Li Zefan <lizefan@huawei.com>

Applied to cgroup/for-3.9.  We probably should synchornize_rcu() from
cgroup_diput() too.  Probably by punting css_free() and cgrp freeing
to a work item from call_rcu() callback.

Thanks.

-- 
tejun