linux-kernel - Re: [PATCH v5] hugetlb: Add hugetlb.*.numa

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Date:   Wed, 10 Nov 2021 16:30:30 -0800
From:   Mina Almasry <almasrymina@...gle.com>
To:     Shakeel Butt <shakeelb@...gle.com>
Cc:     Mike Kravetz <mike.kravetz@...cle.com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Shuah Khan <shuah@...nel.org>,
        Miaohe Lin <linmiaohe@...wei.com>,
        Oscar Salvador <osalvador@...e.de>,
        Michal Hocko <mhocko@...e.com>,
        Muchun Song <songmuchun@...edance.com>,
        David Rientjes <rientjes@...gle.com>,
        Jue Wang <juew@...gle.com>, Yang Yao <ygyao@...gle.com>,
        Joanna Li <joannali@...gle.com>,
        Cannon Matthews <cannonmatthews@...gle.com>,
        linux-mm@...ck.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v5] hugetlb: Add hugetlb.*.numa_stat file

On Wed, Nov 10, 2021 at 4:08 PM Shakeel Butt <shakeelb@...gle.com> wrote:
>
> On Wed, Nov 10, 2021 at 3:01 PM Mina Almasry <almasrymina@...gle.com> wrote:
> >
> [...]
> >
> > +struct hugetlb_cgroup_per_node {
> > +       /* hugetlb usage in pages over all hstates. */
> > +       unsigned long usage[HUGE_MAX_HSTATE];
> > +};
> > +
>
> You missed my other question. Why do you think concurrent access to
> this struct is safe?

Oh, very sorry. I'll upload another iteration with a fix!