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

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Date:   Wed, 6 Oct 2021 20:08:10 +0100
From:   Aaron Tomlin <atomlin@...hat.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>,
        linux-kernel@...r.kernel.org, cgroups@...r.kernel.org,
        linux-mm@...ck.org, Shakeel Butt <shakeelb@...gle.com>,
        Muchun Song <songmuchun@...edance.com>
Subject: Re: [PATCH v2] mm/memcg: Remove obsolete memcg_free_kmem()

On Tue 2021-10-05 16:24 -0400, Waiman Long 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: Aaron Tomlin <atomlin@...hat.com>

-- 
Aaron Tomlin