From: Jens Axboe <jens.axboe@oracle.com>
To: "Fernando Luis Vázquez Cao" <fernando@oss.ntt.co.jp>
Cc: rusty@rustcorp.com.au, linux-kernel@vger.kernel.org,
jeremy@xensource.com
Subject: Re: [PATCH 1/3] block: add queue flag for paravirt frontend drivers
Date: Mon, 27 Oct 2008 13:56:24 +0100 [thread overview]
Message-ID: <20081027125624.GA22217@kernel.dk> (raw)
In-Reply-To: <1225100686.7370.79.camel@sebastian.kern.oss.ntt.co.jp>
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
next prev parent reply other threads:[~2008-10-27 12:57 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-08-26 12:48 [PATCH] virtio_blk: use noop elevator by default Fernando Luis Vázquez Cao
2008-08-26 14:39 ` Jens Axboe
2008-08-27 5:14 ` Fernando Luis Vázquez Cao
2008-10-27 9:44 ` [PATCH 1/3] block: add queue flag for paravirt frontend drivers Fernando Luis Vázquez Cao
2008-10-27 12:56 ` Jens Axboe [this message]
2008-11-04 23:23 ` Jeremy Fitzhardinge
2008-11-05 9:20 ` Jens Axboe
2008-11-05 10:49 ` Fernando Luis Vázquez Cao
2008-10-27 9:45 ` [PATCH 2/3] virtio_blk: set queue paravirt flag Fernando Luis Vázquez Cao
2008-10-27 9:45 ` [PATCH 3/3] xen-blkfront: " Fernando Luis Vázquez Cao
2008-10-27 9:43 ` [PATCH] virtio_blk: use noop elevator by default Fernando Luis Vázquez Cao
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