linux-kernel - Re: [PATCH V2] cgroup: Introduce cgroup_detach

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Message-ID: <CA+qeAOpiW41i3dKyxYp_G9kB=Z9Kr7ZXeJOyq8QZP=qy6H6T3Q@mail.gmail.com>
Date:	Mon, 25 Aug 2014 23:00:00 +0800
From:	Dongsheng Yang <dongsheng081251@...il.com>
To:	Tejun Heo <tj@...nel.org>
Cc:	Dongsheng Yang <yangds.fnst@...fujitsu.com>, lizefan@...wei.com,
	cgroups@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH V2] cgroup: Introduce cgroup_detach_task().

On Mon, Aug 25, 2014 at 10:47 PM, Tejun Heo <tj@...nel.org> wrote:
> On Mon, Aug 25, 2014 at 10:46:03PM +0800, Dongsheng Yang wrote:
>> My point here is that attaching and detaching are a pair of operations.
>
> There is no detaching from a cgroup.  A task is always attached to a
> cgroup whether that's a root or non-root cgroup.

Okey, I should not think it as attaching and detaching. Just treat them as
a move between root and non-root cgroup.

It sounds reasonable to me now.

Thanx.
>
> Thanks.
>
> --
> tejun
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