linux-kernel - Re: [PATCH v5 3/3] cgroups: make procs file writable

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Message-ID: <AANLkTimRM8rDe+u7fTy853RK=1mnLJMK57Tci2OLPR7L@mail.gmail.com>
Date:	Tue, 24 Aug 2010 11:08:58 -0700
From:	Paul Menage <menage@...gle.com>
To:	Ben Blum <bblum@...rew.cmu.edu>
Cc:	linux-kernel@...r.kernel.org,
	containers@...ts.linux-foundation.org, akpm@...ux-foundation.org,
	ebiederm@...ssion.com, lizf@...fujitsu.com, matthltc@...ibm.com,
	oleg@...hat.com
Subject: Re: [PATCH v5 3/3] cgroups: make procs file writable

On Tue, Aug 10, 2010 at 10:48 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>
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