On Thu, Dec 21, 2017 at 02:34:00PM -0700, Keith Busch wrote: > It would be nice, but the driver doesn't know a request's completion > is going to be a polled. We can trivially set a REQ_POLL bit. In fact my initial patch kit had those on the insitence of Jens, but then I removed it because we had no users for it. > Even if it did, we don't have a spec defined > way to tell the controller not to send an interrupt with this command's > compeletion, which would be negated anyway if any interrupt driven IO > is mixed in the same queue. Time to add such a flag to the spec then.. > We could possibly create a special queue > with interrupts disabled for this purpose if we can pass the HIPRI hint > through the request. Eww. That means we double our resource usage both in the host and the device, which isn't going to be pretty.
