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Subject: Re: [v2 PATCH 5/9] mm: vmscan: demote anon DRAM pages to PMEM node
To:     Dave Hansen <dave.hansen@intel.com>, mhocko@suse.com,
        mgorman@techsingularity.net, riel@surriel.com, hannes@cmpxchg.org,
        akpm@linux-foundation.org, keith.busch@intel.com,
        dan.j.williams@intel.com, fengguang.wu@intel.com, fan.du@intel.com,
        ying.huang@intel.com, ziy@nvidia.com
Cc:     linux-mm@kvack.org, linux-kernel@vger.kernel.org
References: <1554955019-29472-1-git-send-email-yang.shi@linux.alibaba.com>
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 <42f2a561-f675-14d7-8d4f-87acfe0a18e9@intel.com>
From:   Yang Shi <yang.shi@linux.alibaba.com>
Message-ID: <745e396c-d9e0-b222-acd4-2a586832878b@linux.alibaba.com>
Date:   Mon, 15 Apr 2019 15:26:33 -0700
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On 4/15/19 3:14 PM, Dave Hansen wrote:
> On 4/15/19 3:10 PM, Yang Shi wrote:
>>> Also, I don't see anything in the code tying this to strictly demote
>>> from DRAM to PMEM.  Is that the end effect, or is it really implemented
>>> that way and I missed it?
>> No, not restrict to PMEM. It just tries to demote from "preferred node"
>> (or called compute node) to a memory-only node. In the hardware with
>> PMEM, PMEM would be the memory-only node.
> If that's the case, your patch subject is pretty criminal. :)

Aha, s/PMEM/cpuless would sound guiltless.