linux-kernel - Re: [PATCH -next] mm/memcontrol.c: replace cgroup_memory_nokmem with mem_cgroup_kmem

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Message-ID: <CAFqt6zYd2GVv4kb4tWVVen-pq4ynN=q8jbE+AWmsjfeD8SJmqg@mail.gmail.com>
Date:   Mon, 27 Jun 2022 06:35:28 +0530
From:   Souptick Joarder <jrdr.linux@...il.com>
To:     Xiang Yang <xiangyang3@...wei.com>
Cc:     Johannes Weiner <hannes@...xchg.org>,
        Michal Hocko <mhocko@...nel.org>, roman.gushchin@...ux.dev,
        shakeelb@...gle.com, songmuchun@...edance.com,
        Andrew Morton <akpm@...ux-foundation.org>,
        cgroups@...r.kernel.org, Linux-MM <linux-mm@...ck.org>,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH -next] mm/memcontrol.c: replace cgroup_memory_nokmem with mem_cgroup_kmem_disabled()

On Sat, Jun 25, 2022 at 11:51 AM Xiang Yang <xiangyang3@...wei.com> wrote:
>
> mem_cgroup_kmem_disabled() checks whether the kmem accounting is off.
> Therefore, replace cgroup_memory_nokmem with mem_cgroup_kmem_disabled(),
> which is the same work in percpu.c and slab_common.c.
>
> Signed-off-by: Xiang Yang <xiangyang3@...wei.com>
Acked-by: Souptick Joarder (HPE) <jrdr.linux@...il.com>
> ---
>  mm/memcontrol.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/mm/memcontrol.c b/mm/memcontrol.c
> index 85adc43c5a25..4672c9ddd188 100644
> --- a/mm/memcontrol.c
> +++ b/mm/memcontrol.c
> @@ -3815,7 +3815,7 @@ static u64 mem_cgroup_read_u64(struct cgroup_subsys_state *css,
>  #ifdef CONFIG_MEMCG_KMEM
>  static int memcg_online_kmem(struct mem_cgroup *memcg)
>  {
> -       if (cgroup_memory_nokmem)
> +       if (mem_cgroup_kmem_disabled())
>                 return 0;
>
>         if (unlikely(mem_cgroup_is_root(memcg)))
> @@ -3830,7 +3830,7 @@ static int memcg_online_kmem(struct mem_cgroup *memcg)
>
>  static void memcg_offline_kmem(struct mem_cgroup *memcg)
>  {
> -       if (cgroup_memory_nokmem)
> +       if (mem_cgroup_kmem_disabled())
>                 return;
>
>         if (unlikely(mem_cgroup_is_root(memcg)))
> --
> 2.22.0
>
>