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

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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.




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