linux-kernel - Re: [PATCH] scsi: remove reduntant assignment when alloc sdev

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Date:   Tue, 22 Jun 2021 09:27:05 +0800
From:   Ed Tsai <ed.tsai@...iatek.com>
To:     Bart Van Assche <bvanassche@....org>,
        "jejb@...ux.ibm.com" <jejb@...ux.ibm.com>,
        "martin.petersen@...cle.com" <martin.petersen@...cle.com>
CC:     "linux-scsi@...r.kernel.org" <linux-scsi@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] scsi: remove reduntant assignment when alloc sdev

On Tue, 2021-06-22 at 01:21 +0800, Bart Van Assche wrote:
> On 6/20/21 8:45 PM, Ed Tsai wrote:
> > sdev->reqeust_queue and its queuedata have been set up in
> > scsi_mq_alloc_queue(). No need to do that again.
> > 
> > Signed-off-by: Ed Tsai <ed.tsai@...iatek.com>
> > ---
> >  drivers/scsi/scsi_scan.c | 4 +---
> >  1 file changed, 1 insertion(+), 3 deletions(-)
> > 
> > diff --git a/drivers/scsi/scsi_scan.c b/drivers/scsi/scsi_scan.c
> > index 12f54571b83e..82c1792f1de2 100644
> > --- a/drivers/scsi/scsi_scan.c
> > +++ b/drivers/scsi/scsi_scan.c
> > @@ -266,8 +266,7 @@ static struct scsi_device
> > *scsi_alloc_sdev(struct scsi_target *starget,
> >  	 */
> >  	sdev->borken = 1;
> >  
> > -	sdev->request_queue = scsi_mq_alloc_queue(sdev);
> > -	if (!sdev->request_queue) {
> > +	if (!scsi_mq_alloc_queue(sdev)) {
> >  		/* release fn is set up in
> > scsi_sysfs_device_initialise, so
> >  		 * have to free and put manually here */
> >  		put_device(&starget->dev);
> > @@ -275,7 +274,6 @@ static struct scsi_device
> > *scsi_alloc_sdev(struct scsi_target *starget,
> >  		goto out;
> >  	}
> >  	WARN_ON_ONCE(!blk_get_queue(sdev->request_queue));
> > -	sdev->request_queue->queuedata = sdev;
> >  
> >  	depth = sdev->host->cmd_per_lun ?: 1;
> 
> Since scsi_mq_alloc_queue() only has one caller, please inline
> scsi_mq_alloc_queue() instead of making this change. See also
> 
https://lore.kernel.org/linux-scsi/20201123031749.14912-5-bvanassche@acm.org/
> 
> Thanks,
> 
> Bart.

have planned to re-submit it?