Re: [PATCH] mm: memcontrol: drop unnecessary task_will_free_mem() check.

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On Wed 09-03-16 11:08:14, Michal Hocko wrote:
> On Wed 09-03-16 08:05:11, Tetsuo Handa wrote:
> [...]
> > Also, what is the reason we do not need below change?
> > I think there is a small race window because oom_killer_disabled needs to be
> > checked after oom_killer_disable() held oom_lock. Is it because all userspace
> > processes except current are frozen before oom_killer_disable() is called and
> > not-yet frozen threads (i.e. kernel threads) never call mem_cgroup_out_of_memory() ?
> 
> Please refer to c32b3cbe0d06 ("oom, PM: make OOM detection in the
> freezer path raceless"). It should explain this.

And for the N+1 time, do not conflate different topics into a single
email thread. This is really annoying.
-- 
Michal Hocko
SUSE Labs

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