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Message-ID: <2a74db22-f2a4-4a14-8091-1e56962a6fa8@redhat.com>
Date: Thu, 1 Aug 2024 15:05:53 +0200
From: David Hildenbrand <david@...hat.com>
To: Zhangrenze <zhang.renze@....com>, "linux-mm@...ck.org"
<linux-mm@...ck.org>,
"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
"akpm@...ux-foundation.org" <akpm@...ux-foundation.org>
Cc: "arnd@...db.de" <arnd@...db.de>,
"linux-arch@...r.kernel.org" <linux-arch@...r.kernel.org>,
"chris@...kel.net" <chris@...kel.net>,
"jcmvbkbc@...il.com" <jcmvbkbc@...il.com>,
"James.Bottomley@...senPartnership.com"
<James.Bottomley@...senPartnership.com>, "deller@....de" <deller@....de>,
"linux-parisc@...r.kernel.org" <linux-parisc@...r.kernel.org>,
"tsbogend@...ha.franken.de" <tsbogend@...ha.franken.de>,
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"ink@...assic.park.msu.ru" <ink@...assic.park.msu.ru>,
"mattst88@...il.com" <mattst88@...il.com>,
"linux-alpha@...r.kernel.org" <linux-alpha@...r.kernel.org>,
Jiaoxupo <jiaoxupo@....com>, Zhouhaofan <zhou.haofan@....com>
Subject: Re: [PATCH v2 0/1] mm: introduce MADV_DEMOTE/MADV_PROMOTE
>> 4. MADV_DEMOTE and MADV_PROMOTE provide a better balance between capacity
>> and latency. They allow hot pages that need promoting to be promoted
>> smoothly and pages that need demoting to be demoted immediately. This
>> helps tiered memory systems to operate more rationally.
>
> Can you summarize why something similar could not be provided by a
> library that builds up on existing functionality, such as migrate_pages?
Sorry, I actually wanted to refer to "move_pages", not "migrate_pages".
--
Cheers,
David / dhildenb
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