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Subject: Re: [RFC] memcg: Add swappiness to cgroup2
From:   teawater <teawaterz@linux.alibaba.com>
In-Reply-To: <20191231151621.8f1565ef8736233dbf60bca7@linux-foundation.org>
Date:   Thu, 2 Jan 2020 09:44:25 +0800
Cc:     Hui Zhu <teawater@gmail.com>, hannes@cmpxchg.org,
        mhocko@kernel.org, vdavydov.dev@gmail.com,
        linux-kernel@vger.kernel.org, cgroups@vger.kernel.org,
        linux-mm@kvack.org
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Message-Id: <DC612002-1238-4B8D-B9FA-E4197D995099@linux.alibaba.com>
References: <1577252208-32419-1-git-send-email-teawater@gmail.com>
 <20191231151621.8f1565ef8736233dbf60bca7@linux-foundation.org>
To:     Andrew Morton <akpm@linux-foundation.org>
Sender: linux-kernel-owner@vger.kernel.org
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> ?? 2020??1??1?գ?07:16??Andrew Morton <akpm@linux-foundation.org> д????
> 
> On Wed, 25 Dec 2019 13:36:48 +0800 Hui Zhu <teawater@gmail.com> wrote:
> 
>> Even if cgroup2 has swap.max, swappiness is still a very useful config.
>> This commit add swappiness to cgroup2.
>> 
>> ...
>> 
>> --- a/mm/memcontrol.c
>> +++ b/mm/memcontrol.c
>> @@ -7143,6 +7143,11 @@ static struct cftype swap_files[] = {
>> 		.file_offset = offsetof(struct mem_cgroup, swap_events_file),
>> 		.seq_show = swap_events_show,
>> 	},
>> +	{
>> +		.name = "swappiness",
>> +		.read_u64 = mem_cgroup_swappiness_read,
>> +		.write_u64 = mem_cgroup_swappiness_write,
>> +	},
>> 	{ }	/* terminate */
>> };
> 
> There should be a Documentation/ update with this?
> 

Hi Andrew,

I will post a new version with Documentation/ update.

Thanks,
Hui

> 
>