On 09/24/2013 07:35 AM, Peter Lieven wrote:
> Signed-off-by: Peter Lieven <pl@kamp.de>
> ---
>  block.c |   65 +++++++++++++++++++++++++++++++++++++++++++++++----------------
>  1 file changed, 49 insertions(+), 16 deletions(-)
> 
> diff --git a/block.c b/block.c
> index ac35cb5..580570a 100644
> --- a/block.c
> +++ b/block.c
> @@ -2710,32 +2710,65 @@ int coroutine_fn bdrv_co_copy_on_readv(BlockDriverState *bs,
>                              BDRV_REQ_COPY_ON_READ);
>  }
>  


> +
> +        if (ret == -ENOTSUP) {
> +            /* Fall back to bounce buffer if write zeroes is unsupported */
> +            iov.iov_len  = num * BDRV_SECTOR_SIZE;

Why 2 spaces?

But that's trivial.

Reviewed-by: Eric Blake <eblake@redhat.com>

-- 
Eric Blake   eblake redhat com    +1-919-301-3266
Libvirt virtualization library http://libvirt.org