From mboxrd@z Thu Jan  1 00:00:00 1970
From: "hch@infradead.org" <hch@infradead.org>
Subject: Re: [PATCH 05/10] block: remove per-queue plugging
Date: Mon, 11 Apr 2011 18:58:12 -0400
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To: Jens Axboe <jaxboe@fusionio.com>
Cc: NeilBrown <neilb@suse.de>, Mike Snitzer <snitzer@redhat.com>, "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>, "hch@infradead.org" <hch@infradead.org>, "dm-devel@redhat.com" <dm-devel@redhat.com>, "linux-raid@vger.kernel.org" <linux-raid@vger.kernel.org>
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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?