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

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Message-ID: <CA+qeAOq-=Yzi6tNq_-2O3yYamxXH99fTd=BUFSrbgcvxW5sRSA@mail.gmail.com>
Date:	Tue, 26 Aug 2014 10:15:47 +0800
From:	Dongsheng Yang <dongsheng081251@...il.com>
To:	Li Zefan <lizefan@...wei.com>
Cc:	Tejun Heo <tj@...nel.org>,
	Dongsheng Yang <yangds.fnst@...fujitsu.com>,
	cgroups@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH V2] cgroup: Introduce cgroup_detach_task().

On Tue, Aug 26, 2014 at 9:35 AM, Li Zefan <lizefan@...wei.com> wrote:
> On 2014/8/25 23:00, Dongsheng Yang wrote:
>> 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.
>>
>
> I from time to time have to explain this to other people.

Ha, we usually want to find a detach function when we saw a function
named as cgroup_attach_task().
>
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