linux-kernel - Re: [PATCH] scsi: ufs: show lba and length for unmap commands

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Date:   Fri, 13 Nov 2020 09:10:39 +0800
From:   Stanley Chu <stanley.chu@...iatek.com>
To:     Jaegeuk Kim <jaegeuk@...nel.org>
CC:     <linux-kernel@...r.kernel.org>, <linux-scsi@...r.kernel.org>,
        <kernel-team@...roid.com>, Leo Liou <leoliou@...gle.com>
Subject: Re: [PATCH] scsi: ufs: show lba and length for unmap commands

Hi,

On Thu, 2020-11-12 at 08:59 -0800, Jaegeuk Kim wrote:
> From: Leo Liou <leoliou@...gle.com>
> 
> We have lba and length for unmap commands.
> 
> Signed-off-by: Leo Liou <leoliou@...gle.com>
> ---
>  drivers/scsi/ufs/ufshcd.c | 5 +++++
>  1 file changed, 5 insertions(+)
> 
> diff --git a/drivers/scsi/ufs/ufshcd.c b/drivers/scsi/ufs/ufshcd.c
> index 86c8dee01ca9..dba3ee307307 100644
> --- a/drivers/scsi/ufs/ufshcd.c
> +++ b/drivers/scsi/ufs/ufshcd.c
> @@ -376,6 +376,11 @@ static void ufshcd_add_command_trace(struct ufs_hba *hba,
>  				lrbp->ucd_req_ptr->sc.exp_data_transfer_len);
>  			if (opcode == WRITE_10)
>  				group_id = lrbp->cmd->cmnd[6];
> +		} else if (opcode == UNMAP) {
> +			if (cmd->request) {
> +				lba = scsi_get_lba(cmd);
> +				transfer_len = blk_rq_bytes(cmd->request);
> +			}

Nitpicking: Perhaps we could unify the method of obtaining both lba and
transfer_len for all READ/WRITE/UNMAP commands?

Reviewed-by: Stanley Chu <stanley.chu@...iatek.com>

>  		}
>  	}
>