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Date:   Wed, 4 Nov 2020 11:59:35 -0500
From:   Johannes Weiner <hannes@cmpxchg.org>
To:     Alex Shi <alex.shi@linux.alibaba.com>
Cc:     akpm@linux-foundation.org, mgorman@techsingularity.net,
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Subject: Re: [PATCH v20 00/20] per memcg lru lock
Message-ID: <20201104165935.GA744831@cmpxchg.org>
References: <1603968305-8026-1-git-send-email-alex.shi@linux.alibaba.com>
 <811216d4-4972-4721-d6b9-1028c02f4290@linux.alibaba.com>
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On Wed, Nov 04, 2020 at 07:55:39PM +0800, Alex Shi wrote:
> @@ -1380,6 +1383,14 @@ struct lruvec *mem_cgroup_page_lruvec(struct page *page, struct pglist_data *pgd
>         return lruvec;
>  }
> 
> +/**
> + * lock_page_lruvec - return lruvec for the locked page.

I would say "lock and return the lruvec for a given page"

> + * @page: the page
> + *
> + * This series functions should be used in either conditions:
> + * PageLRU is cleared or unset
> + * or, page->_refcount is zero

or page is locked

The other changes look good to me, thanks!