linux-kernel - Re: [PATCH v20 00/20] per memcg lru lock

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Message-ID: <59f37649-0530-e2d8-c2e3-ecb70871ffb4@linux.alibaba.com>
Date:   Thu, 5 Nov 2020 13:07:48 +0800
From:   Alex Shi <alex.shi@...ux.alibaba.com>
To:     Johannes Weiner <hannes@...xchg.org>
Cc:     akpm@...ux-foundation.org, mgorman@...hsingularity.net,
        tj@...nel.org, hughd@...gle.com, khlebnikov@...dex-team.ru,
        daniel.m.jordan@...cle.com, willy@...radead.org, lkp@...el.com,
        linux-mm@...ck.org, linux-kernel@...r.kernel.org,
        cgroups@...r.kernel.org, shakeelb@...gle.com,
        iamjoonsoo.kim@....com, richard.weiyang@...il.com,
        kirill@...temov.name, alexander.duyck@...il.com,
        rong.a.chen@...el.com, mhocko@...e.com, vdavydov.dev@...il.com,
        shy828301@...il.com
Subject: Re: [PATCH v20 00/20] per memcg lru lock



在 2020/11/5 上午12:59, Johannes Weiner 写道:
> 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!
> 

Thanks a lot for both comments!
I will pick them and sent out in v21.

Thanks!
Alex