Discard requests, v2 [LWN.net]

From:		David Woodhouse <dwmw2@infradead.org>
To:		Jens Axboe <jens.axboe@oracle.com>
Subject:		[PATCH 0/7] Discard requests, v2
Date:		Sat, 09 Aug 2008 17:26:21 +0100
Message-ID:		<1218299181.26926.88.camel@pmac.infradead.org>
Cc:		Andrew Morton <akpm@linux-foundation.org>, Ric Wheeler <ricwheeler@gmail.com>, linux-fsdevel@vger.kernel.org, gilad@codefidence.com, matthew@wil.cx
Archive-link:		Article, Thread

This time on top of the for-2.6.28 branch of
git://git.kernel.dk/linux-2.6-block.git

I've made it cope with merging and sorting discard requests, still as a
separate patch at the end of the sequence. I don't think we have a
problem with discards passing writes in the queue, any more than we
_already_ had a problem with writes passing writes.

I've at least made elv_dispatch_sort() prevent discard requests from
passing read/write requests, just as it already prevented read and write
requests from passing each other.

{git://,http://} git.infradead.org/users/dwmw2/discard-2.6.git

-- 
dwmw2

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