linux-kernel - Re: [PATCH v8.5 3/3] cgroups: make procs file writable

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Date:	Tue, 29 Mar 2011 16:39:17 -0700
From:	Andrew Morton <akpm@...ux-foundation.org>
To:	Paul Menage <menage@...gle.com>
Cc:	Ben Blum <bblum@...rew.cmu.edu>, linux-kernel@...r.kernel.org,
	containers@...ts.linux-foundation.org, ebiederm@...ssion.com,
	lizf@...fujitsu.com, matthltc@...ibm.com, oleg@...hat.com,
	David Rientjes <rientjes@...gle.com>,
	Miao Xie <miaox@...fujitsu.com>
Subject: Re: [PATCH v8.5 3/3] cgroups: make procs file writable

On Tue, 29 Mar 2011 16:27:19 -0700
Paul Menage <menage@...gle.com> wrote:

> On Mon, Mar 21, 2011 at 10:18 PM, Ben Blum <bblum@...rew.cmu.edu> wrote:
> > Makes procs file writable to move all threads by tgid at once
> >
> > From: Ben Blum <bblum@...rew.cmu.edu>
> >
> > This patch adds functionality that enables users to move all threads in a
> > threadgroup at once to a cgroup by writing the tgid to the 'cgroup.procs'
> > file. This current implementation makes use of a per-threadgroup rwsem that's
> > taken for reading in the fork() path to prevent newly forking threads within
> > the threadgroup from "escaping" while the move is in progress.
> >
> > Signed-off-by: Ben Blum <bblum@...rew.cmu.edu>
> 
> Reviewed-by: Paul Menage <menage@...gle.com>
> 
> OK, I guess this is ready to go in :-)

It all needs a refresh, retest and resend please.
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