linux-kernel - Re: [PATCH 4/8] cgroups: New cancel_attach

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Message-ID: <4E4B2A33.6060909@cn.fujitsu.com>
Date:	Wed, 17 Aug 2011 10:40:51 +0800
From:	Li Zefan <lizf@...fujitsu.com>
To:	Frederic Weisbecker <fweisbec@...il.com>
CC:	LKML <linux-kernel@...r.kernel.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Johannes Weiner <hannes@...xchg.org>,
	Aditya Kali <adityakali@...gle.com>,
	Oleg Nesterov <oleg@...hat.com>
Subject: Re: [PATCH 4/8] cgroups: New cancel_attach_task subsystem callback

Frederic Weisbecker wrote:
> To cancel a process attachment on a subsystem, we only call the
> cancel_attach() callback once on the leader but we have no
> way to cancel the attachment individually for each member of
> the process group.
> 
> This is going to be needed for the max number of tasks susbystem
> that is coming.
> 
> To prepare for this integration, call a new cancel_attach_task()
> callback on each task of the group until we reach the member that
> failed to attach.
> 

Document this new callback in Documentation/cgroups/cgroups.txt

--
Li Zefan
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