linux-kernel - Re: [PATCH 1/3] block: add queue flag for paravirt frontend drivers

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Message-ID: <20081027125624.GA22217@kernel.dk>
Date:	Mon, 27 Oct 2008 13:56:24 +0100
From:	Jens Axboe <jens.axboe@...cle.com>
To:	Fernando Luis Vázquez Cao 
	<fernando@....ntt.co.jp>
Cc:	rusty@...tcorp.com.au, linux-kernel@...r.kernel.org,
	jeremy@...source.com
Subject: Re: [PATCH 1/3] block: add queue flag for paravirt frontend drivers

On Mon, Oct 27 2008, Fernando Luis Vázquez Cao wrote:
> As is the case with SSD devices, we do not want to idle in AS/CFQ when
> the block device is a paravirt front-end driver. This patch adds a flag
> (QUEUE_FLAG_VIRT) which should be used by front-end drivers such as
> virtio_blk and xen-blkfront to indicate a paravirtualized device.

All three patches look fine, although we could just reuse
QUEUE_FLAG_NONROT directly. But I agree it makes sense to make the
distinction, so I've just applied 1-3.

-- 
Jens Axboe

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