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

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Message-ID: <20110827135856.GJ3298@somewhere>
Date:	Sat, 27 Aug 2011 15:58:58 +0200
From:	Frederic Weisbecker <fweisbec@...il.com>
To:	Li Zefan <lizf@...fujitsu.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

On Wed, Aug 17, 2011 at 10:40:51AM +0800, Li Zefan wrote:
> 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

I will.

Thanks.
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