Date: Tue, 12 Jan 2010 09:21:06 +0900
From: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
To: Vivek Goyal <vgoyal@redhat.com>
Cc: Li Zefan <lizf@cn.fujitsu.com>, axboe@kernel.dk, ryov@valinux.co.jp,
       Andrew Morton <akpm@linux-foundation.org>, menage@google.com,
       containers@lists.linux-foundation.org, linux-kernel@vger.kernel.org
Subject: Re: [RFC] [PATCH 2/2] cgroups: blkio subsystem as module
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On Fri, 8 Jan 2010 10:10:38 -0500
Vivek Goyal <vgoyal@redhat.com> wrote:

> On Fri, Jan 08, 2010 at 12:30:21AM -0500, Ben Blum wrote:
> > Convert blk-cgroup to be buildable as a module
> > 
> > From: Ben Blum <bblum@andrew.cmu.edu>
> > 
> > This patch modifies the Block I/O cgroup subsystem to be able to be built as a
> > module. As the CFQ disk scheduler optionally depends on blk-cgroup, config
> > options in block/Kconfig, block/Kconfig.iosched, and block/blk-cgroup.h are
> > enhanced to support the new module dependency.
> > 
> 
> Hi Ben,
> 
> I will give this patch a try. 
> 
> So from blk-cgroup perspective, the advantage of allowing it as module
> will be that we can save some memory if we are not using the controller?
> 
Is "moduled" blkio cgroup safe after page-tracking by page_cgroup is
introduced ? 

Thanks,
-Kame

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