diff options
| author | Fernando Luis Vázquez Cao <fernando@oss.ntt.co.jp> | 2008-10-27 18:45:15 +0900 |
|---|---|---|
| committer | Jens Axboe <jens.axboe@oracle.com> | 2008-12-29 08:28:41 +0100 |
| commit | 7d116b626b843c66b17630a62d696e044d049bfc (patch) | |
| tree | 845304296bf9eee1de2586e0da82ddfbc51ce447 | |
| parent | 88e740f1654bf28565edd528a060695c1f2b5ad7 (diff) | |
virtio_blk: set queue paravirt flag
As a paravirt front-end driver, virtio_blk is not a rotational device so
we want do avoid idling in AS/CFQ. Tell the block layer about this.
Signed-off-by: Fernando Luis Vazquez Cao <fernando@oss.ntt.co.jp>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
| -rw-r--r-- | drivers/block/virtio_blk.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/block/virtio_blk.c b/drivers/block/virtio_blk.c index 85d79a02d48..f151592ecf7 100644 --- a/drivers/block/virtio_blk.c +++ b/drivers/block/virtio_blk.c @@ -237,6 +237,8 @@ static int virtblk_probe(struct virtio_device *vdev) goto out_put_disk; } + queue_flag_set_unlocked(QUEUE_FLAG_VIRT, vblk->disk->queue); + if (index < 26) { sprintf(vblk->disk->disk_name, "vd%c", 'a' + index % 26); } else if (index < (26 + 1) * 26) { |