func: static void virtio_blk_handle_output(VirtIODevice *vdev, VirtQueue *vq)
  
  {
  
      VirtIOBlock *s = VIRTIO_BLK(vdev);
  
      VirtIOBlockReq *req;
  
      MultiReqBuffer mrb = {};
  
  
  
      /* Some guests kick before setting VIRTIO_CONFIG_S_DRIVER_OK so start
  
       * dataplane here instead of waiting for .set_status().
  
       */
  
      if (s->dataplane) {
  
          virtio_blk_data_plane_start(s->dataplane);
  
          return;
  
      }
  
  
  
      blk_io_plug(s->blk);
  
  
  
      while ((req = virtio_blk_get_request(s))) {
  
          virtio_blk_handle_request(req, &mrb);
  
      }
  
  
  
      if (mrb.num_reqs) {
  
          virtio_blk_submit_multireq(s->blk, &mrb);
  
      }
  
  
  
      blk_io_unplug(s->blk);
  
  }
  