Am 25.07.2013 um 16:23 hat Paolo Bonzini geschrieben:
> As we change bdrv_is_allocated to gather more information from bs and
> bs->file, it will become a bit slower. It is still appropriate for online
> jobs, but not for reads/writes. Call the internal function instead.
>
> Reviewed-by: Eric Blake <ebl...@redhat.com>
> Signed-off-by: Paolo Bonzini <pbonz...@redhat.com>
> ---
> block/cow.c | 5 ++++-
> 1 file changed, 4 insertions(+), 1 deletion(-)
>
> diff --git a/block/cow.c b/block/cow.c
> index 9ae2d6a..9797f71 100644
> --- a/block/cow.c
> +++ b/block/cow.c
> @@ -46,6 +46,9 @@ typedef struct BDRVCowState {
> int64_t cow_sectors_offset;
> } BDRVCowState;
>
> +static int coroutine_fn cow_co_is_allocated(BlockDriverState *bs,
> + int64_t sector_num, int nb_sectors, int *num_same);
This forward declaration seems unnecessary.
Kevin
