Re: [Qemu-devel] [PATCH v4 14/14] nbd: Implement NBD_CMD_WRITE_ZEROES on client

[Paolo Bonzini]

On 26/06/2016 00:15, Eric Blake wrote:
> diff --git a/block/nbd.c b/block/nbd.c
> index 8d57220..049d1bd 100644
> --- a/block/nbd.c
> +++ b/block/nbd.c
> @@ -357,6 +357,7 @@ static int nbd_co_flush(BlockDriverState *bs)
>  static void nbd_refresh_limits(BlockDriverState *bs, Error **errp)
>  {
>      bs->bl.max_pdiscard = NBD_MAX_BUFFER_SIZE;
> +    bs->bl.max_pwrite_zeroes = NBD_MAX_BUFFER_SIZE;

I have probably asked before---is there any reason for these to be
limited, since the commands have no payload?

Thanks,

Paolo

>      bs->bl.max_transfer = NBD_MAX_BUFFER_SIZE;
>  }