linux-kernel - Re: [PATCH 1/1] mm/khugepaged: skip copying lazyfree pages on collapse

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Date: Fri, 2 Feb 2024 13:27:48 +0100
From: Michal Hocko <mhocko@...e.com>
To: Lance Yang <ioworker0@...il.com>
Cc: akpm@...ux-foundation.org, zokeefe@...gle.com, david@...hat.com,
	songmuchun@...edance.com, shy828301@...il.com, peterx@...hat.com,
	minchan@...nel.org, linux-mm@...ck.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/1] mm/khugepaged: skip copying lazyfree pages on
 collapse

On Fri 02-02-24 19:18:31, Lance Yang wrote:
> IMO, since it's treated the same as pte_none,
> perhaps lazyfree pages shouldn't be copied to
> the new huge page.

Why? The content of MADV_FREE page is valid until it is reclaimed.
-- 
Michal Hocko
SUSE Labs