On 1/16/20 10:03 AM, Stefano Garzarella wrote: > On Thu, Jan 16, 2020 at 09:30:12AM -0700, Jens Axboe wrote: >> On 1/16/20 9:26 AM, Stefano Garzarella wrote: >>>> Since the use case is mostly single submitter, unless you're doing >>>> something funky or unusual, you're not going to be needing POLLOUT ever. >>> >>> The case that I had in mind was with kernel side polling enabled and >>> a single submitter that can use epoll() to wait free slots in the SQ >>> ring. (I don't have a test, maybe I can write one...) >> >> Right, I think that's the only use case where it makes sense, because >> you have someone else draining the sq side for you. A test case would >> indeed be nice, liburing has a good arsenal of test cases and this would >> be a good addition! > > Sure, I'll send a test to liburing for this case! Gentle ping on the test case :-) -- Jens Axboe
