linux-kernel - Re: [RFC PATCH v2 0/8] mm: Hot page tracking and promotion infrastructure

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Message-ID: <aPZP1eb4moioEOhc@gourry-fedora-PF4VCD3F>
Date: Mon, 20 Oct 2025 11:05:57 -0400
From: Gregory Price <gourry@...rry.net>
To: Jonathan Cameron <jonathan.cameron@...wei.com>
Cc: Yiannis Nikolakopoulos <yiannis.nikolakop@...il.com>,
	Wei Xu <weixugc@...gle.com>, David Rientjes <rientjes@...gle.com>,
	Matthew Wilcox <willy@...radead.org>,
	Bharata B Rao <bharata@....com>, linux-kernel@...r.kernel.org,
	linux-mm@...ck.org, dave.hansen@...el.com, hannes@...xchg.org,
	mgorman@...hsingularity.net, mingo@...hat.com, peterz@...radead.org,
	raghavendra.kt@....com, riel@...riel.com, sj@...nel.org,
	ying.huang@...ux.alibaba.com, ziy@...dia.com, dave@...olabs.net,
	nifan.cxl@...il.com, xuezhengchu@...wei.com,
	akpm@...ux-foundation.org, david@...hat.com, byungchul@...com,
	kinseyho@...gle.com, joshua.hahnjy@...il.com, yuanchu@...gle.com,
	balbirs@...dia.com, alok.rathore@...sung.com, yiannis@...corp.com,
	Adam Manzanares <a.manzanares@...sung.com>
Subject: Re: [RFC PATCH v2 0/8] mm: Hot page tracking and promotion
 infrastructure

On Mon, Oct 20, 2025 at 03:23:45PM +0100, Jonathan Cameron wrote:
> On Thu, 16 Oct 2025 18:16:31 +0200
> Yiannis Nikolakopoulos <yiannis.nikolakop@...il.com> wrote:
> 
> > These could be good starting points, as I see in the rest of the thread.
> > 
> Fun problems.  Maybe we start with very conservative handling and then
> argue for relaxations later.
> 

Not to pile on, but if we can't even manage the conservative handling
due to other design issues - then it doesn't bode well for the rest.
So getting that right should be the priority - not a maybe.

~Gregory