Re: [Qemu-block] [PATCH 6/6] block: Don't enforce 512 byte minimum alignment

[Stefan Hajnoczi]

On Wed, Jun 08, 2016 at 04:10:11PM +0200, Kevin Wolf wrote:
> diff --git a/block.c b/block.c
> index f54bc25..3d850a2 100644
> --- a/block.c
> +++ b/block.c
> @@ -937,7 +937,7 @@ static int bdrv_open_common(BlockDriverState *bs, 
> BdrvChild *file,
>          goto fail_opts;
>      }
>  
> -    bs->request_alignment = 512;
> +    bs->request_alignment = drv->bdrv_co_preadv ? 1 : 512;

What happens in the raw-posix.c AIO case?  There we should still use
512.

Stefan

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