Re: [PATCH 2/5] mm, memcg: narrow the scope of percpu_charge_mutex

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On Tue 03-08-21 07:13:35, Roman Gushchin wrote:
> I’d go with atomic_dec().

which is not implying memory barriers either. You would need
atomic_dec_return or some other explicit barrier IIRC.
-- 
Michal Hocko
SUSE Labs



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