linux-kernel - Re: [PATCH 34/36] block: implement bio_associate

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Message-ID: <20120222190750.GA17480@google.com>
Date:	Wed, 22 Feb 2012 11:07:50 -0800
From:	Tejun Heo <tj@...nel.org>
To:	Jeff Moyer <jmoyer@...hat.com>
Cc:	axboe@...nel.dk, vgoyal@...hat.com, ctalbott@...gle.com,
	rni@...gle.com, linux-kernel@...r.kernel.org,
	Kent Overstreet <koverstreet@...gle.com>
Subject: Re: [PATCH 34/36] block: implement bio_associate_current()

Hey, Jeff.

On Wed, Feb 22, 2012 at 08:45:02AM -0500, Jeff Moyer wrote:
> Tejun Heo <tj@...nel.org> writes:
> 
> > -v2: #ifdef CONFIG_BLK_CGROUP added around bio->bi_ioc dereference in
> >      rq_ioc() to fix build breakage.
> 
> This is useful for cfq without blk cgroups as well, right?  Why have you
> limited the scope like this?

Because blk-throttle is the only current user.  We can move the
BLK_CGROUP to cover just bi_css later on as we add more users.

Thanks.

-- 
tejun
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