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Message-ID: <CAKEwX=Ozp4sTG-g3gT8FCmg4ZAr7ScUoJpODixpRLhmyV1rH-g@mail.gmail.com>
Date: Fri, 29 Sep 2023 11:19:07 -0700
From: Nhat Pham <nphamcs@...il.com>
To: akpm@...ux-foundation.org
Cc: riel@...riel.com, hannes@...xchg.org, mhocko@...nel.org,
roman.gushchin@...ux.dev, shakeelb@...gle.com,
muchun.song@...ux.dev, tj@...nel.org, lizefan.x@...edance.com,
shuah@...nel.org, mike.kravetz@...cle.com, yosryahmed@...gle.com,
fvdl@...gle.com, linux-mm@...ck.org, kernel-team@...a.com,
linux-kernel@...r.kernel.org, cgroups@...r.kernel.org
Subject: Re: [PATCH v2 1/2] hugetlb: memcg: account hugetlb-backed memory in
memory controller (fix)
On Fri, Sep 29, 2023 at 11:17 AM Nhat Pham <nphamcs@...il.com> wrote:
>
> This fixlet disables the hugetlb memcg accounting behavior in cgroup v1.
>
Suggested-by: Johannes Weiner <hannes@...xchg.org>
> Signed-off-by: Nhat Pham <nphamcs@...il.com>
> ---
> mm/memcontrol.c | 1 +
> 1 file changed, 1 insertion(+)
>
> diff --git a/mm/memcontrol.c b/mm/memcontrol.c
> index d5dfc9b36acb..de6bd8ca87f5 100644
> --- a/mm/memcontrol.c
> +++ b/mm/memcontrol.c
> @@ -7081,6 +7081,7 @@ int mem_cgroup_hugetlb_charge_folio(struct folio *folio, gfp_t gfp)
> int ret;
>
> if (mem_cgroup_disabled() ||
> + !cgroup_subsys_on_dfl(memory_cgrp_subsys) ||
> !(cgrp_dfl_root.flags & CGRP_ROOT_MEMORY_HUGETLB_ACCOUNTING))
> return 0;
>
> --
> 2.34.1
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