On 6/1/21 8:58 AM, Pavel Begunkov wrote: > Add futex wait requests, those always go through io-wq for simplicity. Not a huge fan of that, I think this should tap into the waitqueue instead and just rely on the wakeup callback to trigger the event. That would be a lot more efficient than punting to io-wq, both in terms of latency on trigger, but also for efficiency if the app is waiting on a lot of futexes. -- Jens Axboe