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

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Date:	Mon, 11 Apr 2011 14:48:45 +0200
From:	Jens Axboe <jaxboe@...ionio.com>
To:	NeilBrown <neilb@...e.de>
CC:	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

On 2011-04-11 14:36, NeilBrown wrote:
> On Mon, 11 Apr 2011 14:11:58 +0200 Jens Axboe <jaxboe@...ionio.com> wrote:
> 
>>> Yes.  But I need to know when to release the requests that I have stored.
>>> I need to know when ->write_pages or ->read_pages or whatever has finished
>>> submitting a pile of pages so that I can start processing the request that I
>>> have put aside.  So I need a callback from blk_finish_plug.
>>
>> OK fair enough, I'll add your callback patch.
>>
> 
> Thanks.  I'll queue up my md fixes to follow it once it gets  to -linus.

Great, once you do that and XFS kills the blk_flush_plug() calls too,
then we can remove that export and make it internal only.

-- 
Jens Axboe

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