On 08/29/2017 09:01 AM, Linus Torvalds wrote: > On Tue, Aug 29, 2017 at 5:57 AM, Liang, Kan <kan.liang@xxxxxxxxx> wrote: >>> >>> Attached is an ALMOST COMPLETELY UNTESTED forward-port of those two >>> patches, now without that nasty WQ_FLAG_ARRIVALS logic, because we now >>> always put the new entries at the end of the waitqueue. >> >> The patches fix the long wait issue. >> >> Tested-by: Kan Liang <kan.liang@xxxxxxxxx> > > Ok. I'm not 100% comfortable applying them at rc7, so let me think > about it. There's only one known load triggering this, and by "known" > I mean "not really known" since we don't even know what the heck it > does outside of intel and whoever your customer is. > > So I suspect I'll apply the patches next merge window, and we can > maybe mark them for stable if this actually ends up mattering. > > Can you tell if the problem is actually hitting _production_ use or > was some kind of benchmark stress-test? > > It is affecting not a production use, but the customer's acceptance test for their systems. So I suspect it is a stress test. Tim -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>
