linux-kernel - Re: [PATCH 05/10] block: remove per-queue plugging

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Date:	Mon, 11 Apr 2011 18:58:12 -0400
From:	"hch@...radead.org" <hch@...radead.org>
To:	Jens Axboe <jaxboe@...ionio.com>
Cc:	NeilBrown <neilb@...e.de>, Mike Snitzer <snitzer@...hat.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"hch@...radead.org" <hch@...radead.org>,
	"dm-devel@...hat.com" <dm-devel@...hat.com>,
	"linux-raid@...r.kernel.org" <linux-raid@...r.kernel.org>
Subject: Re: [PATCH 05/10] block: remove per-queue plugging

Looking at the patch
(http://git.kernel.dk/?p=linux-2.6-block.git;a=commitdiff;h=761e433f3de6fb8e369af9e5c08beb86286d023f)

I'm not sure it's an optimal design.  The flush callback really
is a per-queue thing.  Why isn't it a function pointer in the request
queue when doing the blk_run_queue call once we're done with a given
queue before moving on to the next one?
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