linux-kernel - Re: [PATCH v2] mm/memcg: Remove obsolete memcg_free

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Message-ID: <CALvZod4Rhv8vSVRGnqHwRuuBHQ=E-YZk7JGjRWHftM4+9cSQ5A@mail.gmail.com>
Date:   Tue, 5 Oct 2021 22:20:45 -0700
From:   Shakeel Butt <shakeelb@...gle.com>
To:     Waiman Long <longman@...hat.com>
Cc:     Johannes Weiner <hannes@...xchg.org>,
        Michal Hocko <mhocko@...nel.org>,
        Vladimir Davydov <vdavydov.dev@...il.com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Vlastimil Babka <vbabka@...e.cz>, Roman Gushchin <guro@...com>,
        LKML <linux-kernel@...r.kernel.org>,
        Cgroups <cgroups@...r.kernel.org>, Linux MM <linux-mm@...ck.org>,
        Muchun Song <songmuchun@...edance.com>
Subject: Re: [PATCH v2] mm/memcg: Remove obsolete memcg_free_kmem()

On Tue, Oct 5, 2021 at 1:25 PM Waiman Long <longman@...hat.com> wrote:
>
> Since commit d648bcc7fe65 ("mm: kmem: make memcg_kmem_enabled()
> irreversible"), the only thing memcg_free_kmem() does is to call
> memcg_offline_kmem() when the memcg is still online which can happen when
> online_css() fails due to -ENOMEM. However, the name memcg_free_kmem()
> is confusing and it is more clear and straight forward to call
> memcg_offline_kmem() directly from mem_cgroup_css_free().
>
> Suggested-by: Roman Gushchin <guro@...com>
> Signed-off-by: Waiman Long <longman@...hat.com>

Reviewed-by: Shakeel Butt <shakeelb@...gle.com>