From: Fernando Luis Vázquez Cao <fernando@oss.ntt.co.jp>
Date: Mon, 27 Oct 2008 09:44:46 +0000 (+0900)
Subject: block: add queue flag for paravirt frontend drivers
X-Git-Tag: v2.6.29-rc1~569^2~42
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=88e740f1654bf28565edd528a060695c1f2b5ad7;p=pandora-kernel.git

block: add queue flag for paravirt frontend drivers

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.

Signed-off-by: Fernando Luis Vazquez Cao <fernando@oss.ntt.co.jp>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
---

Reading git-diff-tree failed