Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20;
MIME-Version: 1.0
References: <20230403220337.443510-1-yosryahmed@google.com> <20230403220337.443510-3-yosryahmed@google.com>
In-Reply-To: <20230403220337.443510-3-yosryahmed@google.com>
From:   Shakeel Butt <shakeelb@google.com>
Date:   Thu, 20 Apr 2023 11:55:40 -0700
Message-ID: <CALvZod5mxE8RAtCEZkaq2fce-Od5MZtyPppn-ns0XzXHMcFm9g@mail.gmail.com>
Subject: Re: [PATCH mm-unstable RFC 2/5] memcg: flush stats non-atomically in mem_cgroup_wb_stats()
To:     Yosry Ahmed <yosryahmed@google.com>
Cc:     Alexander Viro <viro@zeniv.linux.org.uk>,
        Christian Brauner <brauner@kernel.org>,
        Johannes Weiner <hannes@cmpxchg.org>,
        Michal Hocko <mhocko@kernel.org>,
        Roman Gushchin <roman.gushchin@linux.dev>,
        Muchun Song <songmuchun@bytedance.com>,
        Andrew Morton <akpm@linux-foundation.org>,
        linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org,
        cgroups@vger.kernel.org, linux-mm@kvack.org
Content-Type: text/plain; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable
Precedence: bulk

On Mon, Apr 3, 2023 at 3:03=E2=80=AFPM Yosry Ahmed <yosryahmed@google.com> =
wrote:
>
> The previous patch moved the wb_over_bg_thresh()->mem_cgroup_wb_stats()
> code path in wb_writeback() outside the lock section. We no longer need
> to flush the stats atomically. Flush the stats non-atomically.
>
> Signed-off-by: Yosry Ahmed <yosryahmed@google.com>

Acked-by: Shakeel Butt <shakeelb@google.com>