linux-kernel - Re: [RFC PATCH] mm: don't promote exclusive file folios of dying processes

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Message-ID: <Z_qLOHxcfVmiXYp4@casper.infradead.org>
Date: Sat, 12 Apr 2025 16:48:08 +0100
From: Matthew Wilcox <willy@...radead.org>
To: Barry Song <21cnbao@...il.com>
Cc: akpm@...ux-foundation.org, linux-mm@...ck.org,
	linux-kernel@...r.kernel.org, Barry Song <v-songbaohua@...o.com>,
	Baolin Wang <baolin.wang@...ux.alibaba.com>,
	David Hildenbrand <david@...hat.com>,
	Johannes Weiner <hannes@...xchg.org>,
	Oscar Salvador <osalvador@...e.de>,
	Ryan Roberts <ryan.roberts@....com>, Zi Yan <ziy@...dia.com>
Subject: Re: [RFC PATCH] mm: don't promote exclusive file folios of dying
 processes

On Sat, Apr 12, 2025 at 08:58:52PM +1200, Barry Song wrote:
> +		/*
> +		 * Skip marking exclusive file folios as accessed for processes that are
> +		 * exiting or have been reaped due to OOM. This prevents unnecessary
> +		 * promotion of folios that won't benefit the new process being launched.
> +		 */

Please wrap at 80 columns.

One easy way to achieve this is to pipe it through 'fmt -p \*'