Re: [PATCH memcg 2/3] memcg: remove charge forcinig for dying tasks

Michal Hocko
2021-10-21T10:03:18Z

On Thu 21-10-21 00:20:02, Tetsuo Handa wrote:
> On 2021/10/20 23:57, Michal Hocko wrote:
> > One argument for removing it from here is the maintainability. Now you
> > have a memcg specific check which is not in sync with the oom. E.g.
> > out_of_memory does task_will_free_mem as the very first thing. You are
> > also automatically excluding oom killer for cases where that might make
> > a sense.
>
> What makes it possible to remove this check?
> This check was added because task_will_free_mem() in out_of_memory() does NOT work.
> See commit 7775face207922ea ("memcg: killed threads should not invoke memcg OOM killer").

You are right. I've forgot about this and should have checked git blame.
Thanks for bringing this up!

--
Michal Hocko
SUSE Labs