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authorFernando Luis Vázquez Cao <fernando@oss.ntt.co.jp>2008-10-27 18:44:46 +0900
committerJens Axboe <jens.axboe@oracle.com>2008-12-29 08:28:41 +0100
commit88e740f1654bf28565edd528a060695c1f2b5ad7 (patch)
treec66a57396c9b881df1734f5b46e6681bc536c132 /drivers/block
parent3c92ec8ae91ecf59d88c798301833d7cf83f2179 (diff)
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>
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