linux-kernel - Re: [PATCH 0/3] mm/lru_gen: move lru_gen control interface from debugfs to procfs

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Message-ID: <aSm800KsCAptVZKu@casper.infradead.org>
Date: Fri, 28 Nov 2025 15:16:35 +0000
From: Matthew Wilcox <willy@...radead.org>
To: Zicheng Wang <wangzicheng@...or.com>
Cc: akpm@...ux-foundation.org, hannes@...xchg.org, david@...hat.com,
	axelrasmussen@...gle.com, yuanchu@...gle.com, mhocko@...nel.org,
	zhengqi.arch@...edance.com, shakeel.butt@...ux.dev,
	lorenzo.stoakes@...cle.com, weixugc@...gle.com,
	Liam.Howlett@...cle.com, vbabka@...e.cz, rppt@...nel.org,
	surenb@...gle.com, mhocko@...e.com, corbet@....net,
	linux-mm@...ck.org, linux-doc@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 0/3] mm/lru_gen: move lru_gen control interface from
 debugfs to procfs

On Fri, Nov 28, 2025 at 10:53:12AM +0800, Zicheng Wang wrote:
> Case study:
> A widely observed issue on Android is that after application launch,
> the oldest anon generation often becomes empty, and file pages
> are over-reclaimed.

You should fix the bug, not move the debug interface to procfs.  NACK.