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! -- Jens Axboe
