Re: [Qemu-devel] [PATCH v8 1/9] mirror: inherit supported write/zero flags

[Alberto Garcia]

On Mon 12 Mar 2018 11:16:50 AM CET, Anton Nefedov wrote:
> Signed-off-by: Anton Nefedov <address@hidden>
> ---
>  block/mirror.c | 11 +++++++++++
>  1 file changed, 11 insertions(+)
>
> diff --git a/block/mirror.c b/block/mirror.c
> index f5bf620..2fb786f 100644
> --- a/block/mirror.c
> +++ b/block/mirror.c
> @@ -1100,6 +1100,15 @@ static BlockDriver bdrv_mirror_top = {
>      .bdrv_child_perm            = bdrv_mirror_top_child_perm,
>  };
>  
> +static void mirror_top_set_supported_flags(BlockDriverState *bs)
> +{
> +    bs->supported_write_flags = BDRV_REQ_FUA &
> +        bs->backing->bs->supported_write_flags;
> +    bs->supported_zero_flags =
> +        (BDRV_REQ_FUA | BDRV_REQ_MAY_UNMAP) &
> +        bs->backing->bs->supported_zero_flags;
> +}
> +

Reviewed-by: Alberto Garcia <address@hidden>

Berto