Re: [PATCH] virtio-blk: support polling I/O

[Jason Wang <jasowang@xxxxxxxxxx>]

在 2022/3/11 下午11:28, Suwan Kim 写道:
> diff --git a/include/uapi/linux/virtio_blk.h b/include/uapi/linux/virtio_blk.h
> index d888f013d9ff..3fcaf937afe1 100644
> --- a/include/uapi/linux/virtio_blk.h
> +++ b/include/uapi/linux/virtio_blk.h
> @@ -119,8 +119,9 @@ struct virtio_blk_config {
>   	 * deallocation of one or more of the sectors.
>   	 */
>   	__u8 write_zeroes_may_unmap;
> +	__u8 unused1;
>   
> -	__u8 unused1[3];
> +	__virtio16 num_poll_queues;
>   } __attribute__((packed));


This looks like a implementation specific (virtio-blk-pci) optimization, 
how about other implementation like vhost-user-blk?

Thanks