linux-kernel - Re: [PATCH 3/4] cgroup: only need to check oldcgrp==newgrp once

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Message-ID: <20111222153822.GB17084@google.com>
Date:	Thu, 22 Dec 2011 07:38:22 -0800
From:	Tejun Heo <tj@...nel.org>
To:	Mandeep Singh Baines <msb@...omium.org>
Cc:	Li Zefan <lizf@...fujitsu.com>,
	Frederic Weisbecker <fweisbec@...il.com>,
	linux-kernel@...r.kernel.org,
	containers@...ts.linux-foundation.org, cgroups@...r.kernel.org,
	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>,
	Oleg Nesterov <oleg@...hat.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Paul Menage <paul@...lmenage.org>
Subject: Re: [PATCH 3/4] cgroup: only need to check oldcgrp==newgrp once

On Wed, Dec 21, 2011 at 08:18:37PM -0800, Mandeep Singh Baines wrote:
> In cgroup_attach_proc it is now sufficient to only check that
> oldcgrp==newcgrp once. Now that we are using threadgroup_lock()
> during the migrations, oldcgrp will not change.
> 
> Signed-off-by: Mandeep Singh Baines <msb@...omium.org>
> Reviewed-by: Li Zefan <lizf@...fujitsu.com>
> Cc: Tejun Heo <tj@...nel.org>
> Cc: containers@...ts.linux-foundation.org
> Cc: cgroups@...r.kernel.org
> Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>
> Cc: Frederic Weisbecker <fweisbec@...il.com>
> Cc: Oleg Nesterov <oleg@...hat.com>
> Cc: Andrew Morton <akpm@...ux-foundation.org>
> Cc: Paul Menage <paul@...lmenage.org>

Applied 1-3 to cgroup/for-3.3.  I edited out mention of check_fetched
rename in the commit description of the first patch and applied
Acked-by from Li to all three.  Li, let's stick to ack/nack.

Thanks.

-- 
tejun
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