On Wed 05-09-18 22:53:33, Tetsuo Handa wrote: > On 2018/09/05 22:40, Michal Hocko wrote: > > Changelog said > > > > "Although this is possible in principle let's wait for it to actually > > happen in real life before we make the locking more complex again." > > > > So what is the real life workload that hits it? The log you have pasted > > below doesn't tell much. > > Nothing special. I just ran a multi-threaded memory eater on a > CONFIG_PREEMPT=y kernel.
I strongly suspec that your test doesn't really represent or simulate any real and useful workload. Sure it triggers a rare race and we kill another oom victim. Does this warrant to make the code more complex? Well, I am not convinced, as I've said countless times. -- Michal Hocko SUSE Labs
