On Tue, Dec 31, 2019 at 04:59:08AM -0800, Matthew Wilcox wrote: > > I don't want to present this topic; I merely noticed the problem. > I nominate Jens Axboe and Michael Hocko as session leaders. See the > thread here: > > https://lore.kernel.org/linux-mm/20190923111900.GH15392@xxxxxxxxxxxxxxxxxxxxxx/ > > Summary: Congestion is broken and has been for years, and everybody's > system is sleeping waiting for congestion that will never clear. Another symptom: system does not sleep because there is no recorded congestion so it doesn't back off when it should (the wait_iff_congested() backoff case). Cheers, Dave. -- Dave Chinner david@xxxxxxxxxxxxx