On 8/22/18 6:54 AM, Holger Hoffstätte wrote: > On 08/22/18 06:10, Jens Axboe wrote: >> [...] >> If you have time, please look at the 3 patches I posted earlier today. >> Those are for mainline, so should be OK :-) > > I'm just playing along at home but with those 3 I get repeatable > hangs & writeback not starting at all, but curiously *only* on my btrfs > device; for inexplicable reasons some other devices with ext4/xfs flush > properly. Yes, that surprised me too, but it's repeatable. > Now this may or may not have something to do with some of my in-testing > patches for btrfs itself, but if I remove those 3 wbt fixes, everything > is golden again. Not eager to repeat since it hangs sync & requires a > hard reboot.. :( > Just thought you'd like to know. Thanks, that's very useful info! I'll see if I can reproduce that. -- Jens Axboe
