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Date:   Wed, 10 Aug 2022 17:07:06 +0000
From:   Shakeel Butt <shakeelb@...gle.com>
To:     Yafang Shao <laoar.shao@...il.com>
Cc:     ast@...nel.org, daniel@...earbox.net, andrii@...nel.org,
        kafai@...com, songliubraving@...com, yhs@...com,
        john.fastabend@...il.com, kpsingh@...nel.org, sdf@...gle.com,
        haoluo@...gle.com, jolsa@...nel.org, hannes@...xchg.org,
        mhocko@...nel.org, roman.gushchin@...ux.dev,
        songmuchun@...edance.com, akpm@...ux-foundation.org,
        netdev@...r.kernel.org, bpf@...r.kernel.org, linux-mm@...ck.org
Subject: Re: [PATCH bpf-next 05/15] bpf: Fix incorrect mem_cgroup_put

On Wed, Aug 10, 2022 at 03:18:30PM +0000, Yafang Shao wrote:
> The memcg may be the root_mem_cgroup, in which case we shouldn't put it.

No, it is ok to put root_mem_cgroup. css_put already handles the root
cgroups.

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