[PATCHv2 2/4] nvme/pci: Use req_op to determine DIF remapping

[Christoph Hellwig]

On Tue, Aug 29, 2017 at 05:46:02PM -0400, Keith Busch wrote:
> Only read and write commands need DIF remapping. Everything else uses
> a passthrough integrity payload.
> 
> Signed-off-by: Keith Busch <keith.busch at intel.com>

Cc to stable because this means metadata passthrough for NVME_SUBMIT_IO
has been broken for a long time?

Also this reminds that that I really want to move the
remapping to the block core.