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

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Message-ID: <20110418212306.GA21154@infradead.org>
Date:	Mon, 18 Apr 2011 17:23:06 -0400
From:	"hch@...radead.org" <hch@...radead.org>
To:	NeilBrown <neilb@...e.de>
Cc:	Jens Axboe <jaxboe@...ionio.com>,
	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

> NeilBrown (6):
>       md: use new plugging interface for RAID IO.
>       md/dm - remove remains of plug_fn callback.
>       md - remove old plugging code.
>       md: provide generic support for handling unplug callbacks.
>       md: incorporate new plugging into raid5.
>       md: fix up raid1/raid10 unplugging.

Looking over more of the unplugging left over, is there a reason to
keep the unplug_work bits in CFQ?  They seem to rather counter the
current scheme (and it is the last user of kblockd outside of
blk-core.c)

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