linux-kernel - Re: [RFC PATCH 11/12] cgroups: Allow subsystems to cancel a fork

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Date:	Sat, 1 Oct 2011 17:29:31 +0200
From:	Frederic Weisbecker <fweisbec@...il.com>
To:	Andrew Morton <akpm@...gle.com>
Cc:	LKML <linux-kernel@...r.kernel.org>,
	Paul Menage <paul@...lmenage.org>,
	Li Zefan <lizf@...fujitsu.com>,
	Johannes Weiner <hannes@...xchg.org>,
	Aditya Kali <adityakali@...gle.com>,
	Oleg Nesterov <oleg@...hat.com>,
	Kay Sievers <kay.sievers@...y.org>,
	Tim Hockin <thockin@...kin.org>, Tejun Heo <tj@...nel.org>
Subject: Re: [RFC PATCH 11/12] cgroups: Allow subsystems to cancel a fork

On Thu, Sep 15, 2011 at 02:09:41PM -0700, Andrew Morton wrote:
> On Tue,  6 Sep 2011 02:13:05 +0200
> Frederic Weisbecker <fweisbec@...il.com> wrote:
> 
> > Let the subsystem's fork callback return an error value so
> > that they can cancel a fork. This is going to be used by
> > the task counter subsystem to implement the limit.
> 
> This breaks the build quite gruesomely with CONFIG_CGROUPS=n.  I looked
> at doing a quick fix but that would just have piled ugly on ugly.
> 

Sorry about that. I'm fixing the whole so that it builds with or
without cgroups. 

I'm also improving the documentation and changelog along the way.

Thanks.
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