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

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To: Lance Yang <ioworker0@xxxxxxxxx>
Subject: Re: [PATCH 1/1] mm/khugepaged: skip copying lazyfree pages on collapse
From: Michal Hocko <mhocko@xxxxxxxx>
Date: Fri, 2 Feb 2024 13:27:48 +0100
Cc: akpm@xxxxxxxxxxxxxxxxxxxx, zokeefe@xxxxxxxxxx, david@xxxxxxxxxx, songmuchun@xxxxxxxxxxxxx, shy828301@xxxxxxxxx, peterx@xxxxxxxxxx, minchan@xxxxxxxxxx, linux-mm@xxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx
In-reply-to: <CAK1f24=7sy_Bczpt5YeDbkhfriYUc1=zreSFdGCxfF3R0D6sRQ@mail.gmail.com>
References: <20240201125226.28372-1-ioworker0@gmail.com> <Zby-sHLDlmTRaUcd@tiehlicka> <CAK1f24=7sy_Bczpt5YeDbkhfriYUc1=zreSFdGCxfF3R0D6sRQ@mail.gmail.com>

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

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- [PATCH 1/1] mm/khugepaged: skip copying lazyfree pages on collapse
  - From: Lance Yang
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  - From: Michal Hocko
- Re: [PATCH 1/1] mm/khugepaged: skip copying lazyfree pages on collapse
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