linux-kernel - Re: [PATCH 07/10] cgroup: introduce cgroup_taskset and use it in subsys->can_attach(), cancel

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Message-ID: <20111114211611.GI9446@somewhere>
Date:	Mon, 14 Nov 2011 22:16:17 +0100
From:	Frederic Weisbecker <fweisbec@...il.com>
To:	Tejun Heo <tj@...nel.org>
Cc:	paul@...lmenage.org, rjw@...k.pl, lizf@...fujitsu.com,
	linux-pm@...ts.linux-foundation.org, linux-kernel@...r.kernel.org,
	containers@...ts.linux-foundation.org, matthltc@...ibm.com,
	akpm@...ux-foundation.org, oleg@...hat.com,
	kamezawa.hiroyu@...fujitsu.com,
	Balbir Singh <bsingharora@...il.com>,
	Daisuke Nishimura <nishimura@....nes.nec.co.jp>,
	James Morris <jmorris@...ei.org>
Subject: Re: [PATCH 07/10] cgroup: introduce cgroup_taskset and use it in
 subsys->can_attach(), cancel_attach() and attach()

On Tue, Nov 01, 2011 at 04:46:30PM -0700, Tejun Heo wrote:
> Currently, there's no way to pass multiple tasks to cgroup_subsys
> methods necessitating the need for separate per-process and per-task
> methods.  This patch introduces cgroup_taskset which can be used to
> pass multiple tasks and their associated cgroups to cgroup_subsys
> methods.
> 
> Three methods - can_attach(), cancel_attach() and attach() - are
> converted to use cgroup_taskset.  This unifies passed parameters so
> that all methods have access to all information.  Conversions in this
> patchset are identical and don't introduce any behavior change.
> 
> -v2: documentation updated as per Paul Menage's suggestion.
> 
> Signed-off-by: Tejun Heo <tj@...nel.org>
> Acked-by: Paul Menage <paul@...lmenage.org>
> Reviewed-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>
> Cc: Li Zefan <lizf@...fujitsu.com>
> Cc: Balbir Singh <bsingharora@...il.com>
> Cc: Daisuke Nishimura <nishimura@....nes.nec.co.jp>
> Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>
> Cc: James Morris <jmorris@...ei.org>

Reviewed-by: Frederic Weisbecker <fweisbec@...il.com>
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