netdev - Block device throttling [Re: Distributed storage.]

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Date:	Wed, 8 Aug 2007 13:54:49 +0400
From:	Evgeniy Polyakov <johnpol@....mipt.ru>
To:	Jens Axboe <jens.axboe@...cle.com>
Cc:	Daniel Phillips <phillips@...nq.net>, netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org, linux-fsdevel@...r.kernel.org,
	Peter Zijlstra <peterz@...radead.org>
Subject: Block device throttling [Re: Distributed storage.]

On Tue, Aug 07, 2007 at 10:55:38PM +0200, Jens Axboe (jens.axboe@...cle.com) wrote:
> I don't like structure bloat, but I do like nice design. Overloading is

So, what did we decide? To bloat bio a bit (add a queue pointer) or to
use physical device limits? The latter requires to replace all occurence
of bio->bi_bdev = something_new with blk_set_bdev(bio, somthing_new),
where queue limits will be appropriately charged. So far I'm testing
second case, but I only changed DST for testing, can change all other
users if needed though.

-- 
	Evgeniy Polyakov
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