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Date: Thu, 22 Dec 2011 13:36:11 +0800
From: Li Zefan <lizf@cn.fujitsu.com>
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To: Mandeep Singh Baines <msb@chromium.org>
CC: Tejun Heo <tj@kernel.org>, Frederic Weisbecker <fweisbec@gmail.com>,
        linux-kernel@vger.kernel.org, containers@lists.linux-foundation.org,
        cgroups@vger.kernel.org,
        KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>,
        Oleg Nesterov <oleg@redhat.com>,
        Andrew Morton <akpm@linux-foundation.org>,
        Paul Menage <paul@paulmenage.org>
Subject: Re: [PATCH 2/4] cgroup: remove redundant get/put of task struct
References: <1324527518-24461-1-git-send-email-msb@chromium.org> <1324527518-24461-2-git-send-email-msb@chromium.org>
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Mandeep Singh Baines wrote:
> threadgroup_lock() guarantees that the target threadgroup will
> remain stable - no new task will be added, no new PF_EXITING
> will be set and exec won't happen.
> 
> Changes in V2:
> * https://lkml.org/lkml/2011/12/20/369 (Tejun Heo)
>   * Undo incorrect removal of get/put from attach_task_by_pid()
> * Author
>   * Remove a comment which is made stale by this change
> 
> Signed-off-by: Mandeep Singh Baines <msb@chromium.org>

Acked-by: Li Zefan <lizf@cn.fujitsu.com>

> Cc: Tejun Heo <tj@kernel.org>
> Cc: Li Zefan <lizf@cn.fujitsu.com>
> Cc: containers@lists.linux-foundation.org
> Cc: cgroups@vger.kernel.org
> Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
> Cc: Frederic Weisbecker <fweisbec@gmail.com>
> Cc: Oleg Nesterov <oleg@redhat.com>
> Cc: Andrew Morton <akpm@linux-foundation.org>
> Cc: Paul Menage <paul@paulmenage.org>
> ---
>  kernel/cgroup.c |   11 ++---------
>  1 files changed, 2 insertions(+), 9 deletions(-)