On Thu, Mar 24, 2022 at 11:04:49PM +0900, Suwan Kim wrote:
> +static int virtblk_poll(struct blk_mq_hw_ctx *hctx, struct io_comp_batch *iob)
> +{
> + struct virtio_blk_vq *vq = hctx->driver_data;
> + struct virtblk_req *vbr;
> + unsigned long flags;
> + unsigned int len;
> + int found = 0;
> +
> + spin_lock_irqsave(&vq->lock, flags);
> +
> + while ((vbr = virtqueue_get_buf(vq->vq, &len)) != NULL) {
> + struct request *req = blk_mq_rq_from_pdu(vbr);
> +
> + found++;
> + if (!blk_mq_add_to_batch(req, iob, vbr->status,
> + virtblk_complete_batch))
> + blk_mq_complete_request(req);
> + }
> +
> + spin_unlock_irqrestore(&vq->lock, flags);
virtblk_done() does:
/* In case queue is stopped waiting for more buffers. */
if (req_done)
blk_mq_start_stopped_hw_queues(vblk->disk->queue, true);
Is the same thing needed here in virtblk_poll() so that stopped queues
are restarted when requests complete?
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