Re: [PATCH v2 2/2] scsi: ufs: core: Decouple CQ sweep from request iterator in MCQ

[Peter Wang]

On Mon, 2026-09-21 at 10:13 -0700, Bart Van Assche wrote:
> In SDB mode, clearing UTRLDBR will cause all pending commands to be
> requeued because the OCS member is initialized to
> OCS_INVALID_COMMAND_STATUS and because ufshcd_transfer_rsp_status()
> translates this status value into DID_REQUEUE << 16. I'm concerned
> that this approach may cause the deadlines for SCSI commands to be
> exceeded. Hence my proposal for MCQ mode not to requeue pending SCSI
> commands but instead to let the SCSI error handler decide what to do
> with these commands.
> 

Hi Bart,

The current MCQ flow is similar to SDB. We discussed this two years
ago.
Aborted commands will be requeued immediately, just like in SDB mode
https://patchwork.kernel.org/project/linux-scsi/list/?series=894411&state=*

Thanks
Peter