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Message-ID:
<DM6PR04MB6575DBC319949EABA3D5226BFCF22@DM6PR04MB6575.namprd04.prod.outlook.com>
Date: Wed, 29 May 2024 21:12:54 +0000
From: Avri Altman <Avri.Altman@....com>
To: Bart Van Assche <bvanassche@....org>, "Martin K . Petersen"
<martin.petersen@...cle.com>
CC: Bean Huo <beanhuo@...ron.com>, Peter Wang <peter.wang@...iatek.com>,
"linux-scsi@...r.kernel.org" <linux-scsi@...r.kernel.org>,
"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: RE: [PATCH v6 3/3] scsi: ufs: sysfs: Make max_number_of_rtt
read-write
> On 5/26/24 01:16, Avri Altman wrote:
> > +static inline void ufshcd_freez_hw_queues(struct ufs_hba *hba) {
> > + struct scsi_device *sdev;
> > +
> > + shost_for_each_device(sdev, hba->host) {
> > + if (sdev == hba->ufs_device_wlun)
> > + continue;
> > + blk_mq_freeze_queue(sdev->request_queue);
> > + blk_mq_quiesce_queue(sdev->request_queue);
> > + }
> > +}
> > +
> > +static inline void ufshcd_unfreez_hw_queues(struct ufs_hba *hba) {
> > + struct scsi_device *sdev;
> > +
> > + shost_for_each_device(sdev, hba->host) {
> > + if (sdev == hba->ufs_device_wlun)
> > + continue;
> > + blk_mq_unquiesce_queue(sdev->request_queue);
> > + blk_mq_unfreeze_queue(sdev->request_queue);
> > + }
> > +}
>
> Why have these functions been declared inline? blk_mq_freeze_queue() may
> sleep and hence performance is not an argument to inline these functions.
> Additionally, the WLUN should not be skipped when freezing or unfreezing
> request queues. The blk_mq_quiesce_queue() and
> blk_mq_unquiesce_queue() calls are not necessary in the above code.
> Please remove these.
OK.
Thanks,
Avri
>
> Thanks,
>
> Bart.
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