linux-kernel - Re: [PATCH v3, 0/4] mm, memcg: cgroup v1 and v2 tunable load/store tearing fixes

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Date:   Wed, 8 Mar 2023 18:40:09 +0100
From:   Michal Hocko <mhocko@...e.com>
To:     Yue Zhao <findns94@...il.com>
Cc:     akpm@...ux-foundation.org, roman.gushchin@...ux.dev,
        hannes@...xchg.org, shakeelb@...gle.com, muchun.song@...ux.dev,
        willy@...radead.org, linux-mm@...ck.org, cgroups@...r.kernel.org,
        linux-kernel@...r.kernel.org, tangyeechou@...il.com
Subject: Re: [PATCH v3, 0/4] mm, memcg: cgroup v1 and v2 tunable load/store
 tearing fixes

On Thu 09-03-23 00:25:51, Yue Zhao wrote:
> This patch series helps to prevent load/store tearing in
> several cgroup knobs.
> 
> As kindly pointed out by Michal Hocko, we should add 
> [WRITE|READ]_ONCE for all occurrences of memcg->oom_kill_disable,
> memcg->swappiness and memcg->soft_limit.
> 
> v3:
> - Add [WRITE|READ]_ONCE for all occurrences of
> memcg->oom_kill_disable, memcg->swappiness and memcg->soft_limit
> v2:
> - Rephrase changelog
> - Add [WRITE|READ]_ONCE for memcg->oom_kill_disable,
>  memcg->swappiness, vm_swappiness and memcg->soft_limit
> v1:
> - Add [WRITE|READ]_ONCE for memcg->oom_group
> 
> Past patches:
> V2: https://lore.kernel.org/linux-mm/20230306154138.3775-1-findns94@gmail.com/
> V1: https://lore.kernel.org/linux-mm/20230220151638.1371-1-findns94@gmail.com/
> 
> Yue Zhao (4):
>   mm, memcg: Prevent memory.oom.group load/store tearing
>   mm, memcg: Prevent memory.swappiness load/store tearing
>   mm, memcg: Prevent memory.oom_control load/store tearing
>   mm, memcg: Prevent memory.soft_limit_in_bytes load/store tearing
> 
>  include/linux/swap.h |  8 ++++----
>  mm/memcontrol.c      | 30 +++++++++++++++---------------
>  2 files changed, 19 insertions(+), 19 deletions(-)

Acked-by: Michal Hocko <mhocko@...e.com>

Btw. you could have preserved acks for patches you haven't changed from
the previous version.

-- 
Michal Hocko
SUSE Labs