Re: [Qemu-devel] [PATCH 08/35] block: all bdrv_aio callbacks are coroutine_fn

[Paolo Bonzini <pbonzini@redhat.com>]

On 05/07/2017 00:03, Marc-André Lureau wrote:
> Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
> ---
>  include/block/block_int.h | 10 +++++-----
>  1 file changed, 5 insertions(+), 5 deletions(-)
> 
> diff --git a/include/block/block_int.h b/include/block/block_int.h
> index 15fa602150..93eb2a9528 100644
> --- a/include/block/block_int.h
> +++ b/include/block/block_int.h
> @@ -133,15 +133,15 @@ struct BlockDriver {
>      void (*bdrv_refresh_filename)(BlockDriverState *bs, QDict *options);
>  
>      /* aio */
> -    BlockAIOCB *(*bdrv_aio_readv)(BlockDriverState *bs,
> +    BlockAIOCB * coroutine_fn (*bdrv_aio_readv)(BlockDriverState *bs,
>          int64_t sector_num, QEMUIOVector *qiov, int nb_sectors,
>          BlockCompletionFunc *cb, void *opaque);
> -    BlockAIOCB *(*bdrv_aio_writev)(BlockDriverState *bs,
> +    BlockAIOCB * coroutine_fn (*bdrv_aio_writev)(BlockDriverState *bs,
>          int64_t sector_num, QEMUIOVector *qiov, int nb_sectors,
>          BlockCompletionFunc *cb, void *opaque);
> -    BlockAIOCB *(*bdrv_aio_flush)(BlockDriverState *bs,
> +    BlockAIOCB * coroutine_fn (*bdrv_aio_flush)(BlockDriverState *bs,
>          BlockCompletionFunc *cb, void *opaque);
> -    BlockAIOCB *(*bdrv_aio_pdiscard)(BlockDriverState *bs,
> +    BlockAIOCB * coroutine_fn (*bdrv_aio_pdiscard)(BlockDriverState *bs,
>          int64_t offset, int bytes,
>          BlockCompletionFunc *cb, void *opaque);
>  
> @@ -247,7 +247,7 @@ struct BlockDriver {
>      void (*bdrv_lock_medium)(BlockDriverState *bs, bool locked);
>  
>      /* to control generic scsi devices */
> -    BlockAIOCB *(*bdrv_aio_ioctl)(BlockDriverState *bs,
> +    BlockAIOCB * coroutine_fn (*bdrv_aio_ioctl)(BlockDriverState *bs,
>          unsigned long int req, void *buf,
>          BlockCompletionFunc *cb, void *opaque);
>      int coroutine_fn (*bdrv_co_ioctl)(BlockDriverState *bs,
> 


They are, but it's an implementation detail.  Why is this patch necessary?

Thanks,

Paolo