On Thu 28-06-18 16:19:07, Greg Thelen wrote: > Michal Hocko <mhocko@xxxxxxxxxx> wrote: [...] > > + if (mem_cgroup_out_of_memory(memcg, mask, order)) > > + return OOM_SUCCESS; > > + > > + WARN(1,"Memory cgroup charge failed because of no reclaimable memory! " > > + "This looks like a misconfiguration or a kernel bug."); > > I'm not sure here if the warning should here or so strongly worded. It > seems like the current task could be oom reaped with MMF_OOM_SKIP and > thus mem_cgroup_out_of_memory() will return false. So there's nothing > alarming in that case. If the task is reaped then its charges should be released as well and that means that we should get below the limit. Sure there is some room for races but this should be still unlikely. Maybe I am just underestimating though. What would you suggest instead? -- Michal Hocko SUSE Labs
