linux-kernel - Re: [PATCH v17 00/21] per memcg lru lock

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Message-ID: <c00ac587-7f69-768a-84ea-53cbf7469ae9@linux.alibaba.com>
Date:   Wed, 29 Jul 2020 22:49:19 +0800
From:   Alex Shi <alex.shi@...ux.alibaba.com>
To:     akpm@...ux-foundation.org, mgorman@...hsingularity.net,
        tj@...nel.org, hughd@...gle.com, khlebnikov@...dex-team.ru,
        daniel.m.jordan@...cle.com, yang.shi@...ux.alibaba.com,
        willy@...radead.org, hannes@...xchg.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
Subject: Re: [PATCH v17 00/21] per memcg lru lock


Is there any comments or suggestion for this patchset?
Any hints will be very appreciated.

Thanks
Alex

在 2020/7/27 下午1:40, Alex Shi 写道:

> A standard for new page isolation steps like the following:
> 1, get_page(); #pin the page avoid be free
> 2, TestClearPageLRU(); #serialize other isolation, also memcg change
> 3, spin_lock on lru_lock; #serialize lru list access
> The step 2 could be optimzed/replaced in scenarios which page is unlikely
> be accessed by others.
> 
> 
> 
> 在 2020/7/25 下午8:59, Alex Shi 写道:
>> The new version which bases on v5.8-rc6. It includes Hugh Dickins fix in 
>> mm/swap.c and mm/mlock.c fix which Alexander Duyck pointed out, then
>> removes 'mm/mlock: reorder isolation sequence during munlock' 
>>
>> Hi Johanness & Hugh & Alexander & Willy,
>>
>> Could you like to give a reviewed by since you address much of issue and
>> give lots of suggestions! Many thanks!