Re: [PATCH 1/6] scsi: libsas: Add sas_task_find_rq()

[John Garry <john.garry@xxxxxxxxxx>]

On 28/09/2022 14:13, Jason Yan wrote:
> > +++ b/include/scsi/libsas.h
> > @@ -644,6 +644,28 @@ static inline bool sas_is_internal_abort(struct 
> > sas_task *task)
> >       return task->task_proto == SAS_PROTOCOL_INTERNAL_ABORT;
> >   }
> > +static inline struct request *sas_task_find_rq(struct sas_task *task)
> > +{
> > +    struct scsi_cmnd *scmd;
> > +
> > +    if (!task || !task->uldd_task)
> > +        return NULL;
> > +
> > +    if (task->task_proto & SAS_PROTOCOL_STP_ALL) {
> > +        struct ata_queued_cmd *qc;
> > +
> > +        qc = task->uldd_task;
> > +        scmd = qc->scsicmd;
>
> Can we remove that local qc?

We could...

> and
>      scmd = ((struct ata_queued_cmd *)task->uldd_task)->scsicmd;

... but I am not really sure that this is much better, specifically 
because of the casting from void. If you feel really strongly about it I 
could.

thanks,
John