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>
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@ -237,6 +237,8 @@ static int virtblk_probe(struct virtio_device *vdev)
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goto out_put_disk;
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}
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queue_flag_set_unlocked(QUEUE_FLAG_VIRT, vblk->disk->queue);
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if (index < 26) {
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sprintf(vblk->disk->disk_name, "vd%c", 'a' + index % 26);
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} else if (index < (26 + 1) * 26) {
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