Re: [PATCH 4/7] zbd: fix write zone accounting of trim workload

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On Jun 07, 2023 / 09:32, Jens Axboe wrote:
> On 6/7/23 2:32?AM, Shin'ichiro Kawasaki wrote:
> > @@ -339,6 +339,33 @@ static void zbd_write_zone_put(struct thread_data *td, const struct fio_file *f,
> >  	z->write = 0;
> >  }
> >  
> > +/**
> > + * zbd_reset_zone - reset the write pointer of a single zone and remove the zone
> > + *                  from the array of write zones.
> > + * @td: FIO thread data.
> > + * @f: FIO file associated with the disk for which to reset a write pointer.
> > + * @z: Zone to reset.
> > + *
> > + * Returns 0 upon success and a negative error code upon failure.
> > + * The caller must hold z->mutex.
> > + */
> > +static int zbd_reset_zone(struct thread_data *td, struct fio_file *f,
> > +			  struct fio_zone_info *z)
> > +{
> > +	int ret;
> > +
> > +	ret = __zbd_reset_zone(td, f, z);
> > +	if (ret)
> > +		goto done;
> > +
> > +	pthread_mutex_lock(&f->zbd_info->mutex);
> > +	zbd_write_zone_put(td, f, z);
> > +	pthread_mutex_unlock(&f->zbd_info->mutex);
> > +
> > +done:
> > +	return ret;
> > +}
> 
> This would look better as:
> 
> {
> 	int ret;
> 
> 	ret = __zbd_reset_zone(td, f, z);
> 	if (ret)
> 		return ret;
> 
> 	pthread_mutex_lock(&f->zbd_info->mutex);
> 	zbd_write_zone_put(td, f, z);
> 	pthread_mutex_unlock(&f->zbd_info->mutex);
> 	return 0;
> }
> 
> to avoid that goto. Goto only makes sense if there's common cleanup to
> do for multiple error cases, not for a single failure where you can just
> return the error.

Thanks for the comment. Will reflect in v2.



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