Re: [PATCH 06/14] block/mirror: drop extra error propagation in commit_active_start()

[Greg Kurz]

On Wed,  9 Sep 2020 21:59:22 +0300
Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com> wrote:

> Let's check return value of mirror_start_job to check for failure
> instead of local_err.
> 
> Rename ret to job, as ret is usually integer variable.
> 
> Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
> ---

Reviewed-by: Greg Kurz <groug@kaod.org>

>  block/mirror.c | 12 +++++-------
>  1 file changed, 5 insertions(+), 7 deletions(-)
> 
> diff --git a/block/mirror.c b/block/mirror.c
> index ca250f765d..529ba12b2a 100644
> --- a/block/mirror.c
> +++ b/block/mirror.c
> @@ -1788,8 +1788,7 @@ BlockJob *commit_active_start(const char *job_id, 
> BlockDriverState *bs,
>                                bool auto_complete, Error **errp)
>  {
>      bool base_read_only;
> -    Error *local_err = NULL;
> -    BlockJob *ret;
> +    BlockJob *job;
>  
>      base_read_only = bdrv_is_read_only(base);
>  
> @@ -1799,19 +1798,18 @@ BlockJob *commit_active_start(const char *job_id, 
> BlockDriverState *bs,
>          }
>      }
>  
> -    ret = mirror_start_job(
> +    job = mirror_start_job(
>                       job_id, bs, creation_flags, base, NULL, speed, 0, 0,
>                       MIRROR_LEAVE_BACKING_CHAIN, false,
>                       on_error, on_error, true, cb, opaque,
>                       &commit_active_job_driver, false, base, auto_complete,
>                       filter_node_name, false, MIRROR_COPY_MODE_BACKGROUND,
> -                     &local_err);
> -    if (local_err) {
> -        error_propagate(errp, local_err);
> +                     errp);
> +    if (!job) {
>          goto error_restore_flags;
>      }
>  
> -    return ret;
> +    return job;
>  
>  error_restore_flags:
>      /* ignore error and errp for bdrv_reopen, because we want to propagate