On 8/30/18 12:53 PM, Logan Gunthorpe wrote: > QUEUE_FLAG_PCI_P2P is introduced meaning a driver's request queue > supports targeting P2P memory. > > When a request is submitted we check if PCI P2PDMA memory is assigned > to the first page in the bio. If it is, we ensure the queue it's > submitted to supports it, and enforce REQ_NOMERGE. I think this belongs in the caller - both the validity check, and passing in NOMERGE for this type of request. I don't want to impose this overhead on everything, for a pretty niche case. -- Jens Axboe
