linux-kernel - Re: [PATCH 2/5] mm, memcg: narrow the scope of percpu_charge

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Message-ID: <CAMZfGtWESFeDgV7H4N6ch+PpwYAkV+=qPJKiamnZ7sX=6t3e4g@mail.gmail.com>
Date:   Fri, 30 Jul 2021 10:42:29 +0800
From:   Muchun Song <songmuchun@...edance.com>
To:     Miaohe Lin <linmiaohe@...wei.com>
Cc:     Johannes Weiner <hannes@...xchg.org>,
        Michal Hocko <mhocko@...nel.org>,
        Vladimir Davydov <vdavydov.dev@...il.com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Shakeel Butt <shakeelb@...gle.com>,
        Roman Gushchin <guro@...com>,
        Matthew Wilcox <willy@...radead.org>,
        Alex Shi <alexs@...nel.org>,
        Wei Yang <richard.weiyang@...il.com>,
        Linux Memory Management List <linux-mm@...ck.org>,
        LKML <linux-kernel@...r.kernel.org>,
        Cgroups <cgroups@...r.kernel.org>
Subject: Re: [PATCH 2/5] mm, memcg: narrow the scope of percpu_charge_mutex

On Thu, Jul 29, 2021 at 8:58 PM Miaohe Lin <linmiaohe@...wei.com> wrote:
>
> Since percpu_charge_mutex is only used inside drain_all_stock(), we can
> narrow the scope of percpu_charge_mutex by moving it here.
>
> Signed-off-by: Miaohe Lin <linmiaohe@...wei.com>

LGTM.

Reviewed-by: Muchun Song <songmuchun@...edance.com>