On Thu, Apr 30, 2020 at 03:30:49PM -0400, Johannes Weiner wrote: > On Thu, Apr 30, 2020 at 12:06:10PM -0700, Roman Gushchin wrote: > > On Thu, Apr 30, 2020 at 11:27:12AM -0700, Shakeel Butt wrote: > > > @@ -6106,7 +6107,7 @@ static ssize_t memory_max_write(struct > > > kernfs_open_file *of, > > > } > > > > > > memcg_memory_event(memcg, MEMCG_OOM); > > > - if (!mem_cgroup_out_of_memory(memcg, GFP_KERNEL, 0)) > > > + if (!mem_cgroup_out_of_memory(memcg, GFP_KERNEL, 0, true)) > > > > I wonder if we can handle it automatically from the oom_killer side? > > We can suppress warnings if oc->memcg is set and the cgroup scanning > > showed that there are no belonging processes? > > Note that we do remote charging for certain consumers, where memory > gets charged from the outside of the cgroup. > > We would want to know if these cause OOMs on an empty cgroup, rather > than force-charge the allocations quietly. >
Yeah, good point.
