200     if (elem->out_num < 2 || elem->in_num < 3) {  in virtio_blk_handle_scsi()
760                                          uint64_t out_num,  in virtio_blk_handle_zone_append()  argument
767     int64_t len = iov_size(out_iov, out_num);  in virtio_blk_handle_zone_append()
780     qemu_iovec_init_external(&req->qiov, out_iov, out_num);  in virtio_blk_handle_zone_append()
801     unsigned out_num = req->elem.out_num;  in virtio_blk_handle_request()  local
805     if (req->elem.out_num < 1 || req->elem.in_num < 1) {  in virtio_blk_handle_request()
810     if (unlikely(iov_to_buf(out_iov, out_num, 0, &req->out,  in virtio_blk_handle_request()
816     iov_discard_front_undoable(&out_iov, &out_num, sizeof(req->out),  in virtio_blk_handle_request()
845             qemu_iovec_init_external(&req->qiov, out_iov, out_num);  in virtio_blk_handle_request()
923         virtio_blk_handle_zone_append(req, out_iov, in_iov, out_num, in_num);  in virtio_blk_handle_request()
934         size_t out_len = iov_size(out_iov, out_num);  in virtio_blk_handle_request()
950         if (unlikely(iov_to_buf(out_iov, out_num, 0, &dwz_hdr,  in virtio_blk_handle_request()