Messages in this thread | | | Date | Thu, 12 Dec 2013 17:32:22 +0100 | From | Michal Hocko <> | Subject | Re: [patch 7/8] mm, memcg: allow processes handling oom notifications to access reserves |
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On Thu 12-12-13 09:21:56, Tejun Heo wrote: [...] > There'd still be all the bells and whistles to configure and monitor > system-level OOM and if there's justified need for improvements, we > surely can and should do that;
You weren't on the CC of the original thread which has started here https://lkml.org/lkml/2013/11/19/191. And the original request for discussion was more about user defined _policies_ for the global OOM rather than user space global OOM handler. I feel that there are usacases where the current "kill a single task based on some calculations" is far from optimal which leads to hacks which try to cope with after oom condition somehow gracefully.
I do agree with you that pulling oom handling sounds too dangerous even with all the code that it would need and I feel we should go a different path than (ab)using memcg.oom_control interface for that. I still think we need to have a way to tell the global OOM killer what to do.
[...] -- Michal Hocko SUSE Labs
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