On Mon, Apr 26, 2021 at 04:43:16PM +0200, Christoph Hellwig wrote: > On Fri, Apr 23, 2021 at 03:05:58PM -0700, Keith Busch wrote: > > The block layer knows how to deal with polled requests. Let the NVMe > > driver use the previously reserved user "flags" fields to define an > > option to allocate the request from the polled hardware contexts. If > > polling is not enabled, then the block layer will automatically fallback > > to a non-polled request. > > So this only support synchronous polling for a single command. What > use case do we have for that? I think io_uring based polling would > be much more useful once we support NVMe passthrough through that. There is no significant use case here. I just needed a simple way to test the polled exec from earlier in the series. It was simple enough so I included the patch here, but it's really not important compared to the preceeding patches.
