[PATCHv10 0/9] write hints with nvme fdp, scsi streams

[Bart Van Assche]

On 12/5/24 12:37 PM, Martin K. Petersen wrote:
> For token based offload, I really don't understand the objection to
> storing the cookie in the bio. I fail to see the benefit of storing the
> cookie in the driver and then have the bio refer to something else which
> maps to the actual cookie returned by the storage.
Does "cookie" refer to the SCSI ROD token? Storing the ROD token in the
REQ_OP_COPY_DST bio implies that the REQ_OP_COPY_DST bio is only
submitted after the REQ_OP_COPY_SRC bio has completed. NVMe users may
prefer that REQ_OP_COPY_SRC and REQ_OP_COPY_DST bios are submitted
simultaneously.

Thanks,

Bart.