linux-kernel - [PATCH mm-new 0/2] mm/khugepaged: refactor and merge PTE scanning logic

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Message-ID: <20251002073255.14867-1-lance.yang@linux.dev>
Date: Thu,  2 Oct 2025 15:32:53 +0800
From: Lance Yang <lance.yang@...ux.dev>
To: akpm@...ux-foundation.org,
	david@...hat.com,
	lorenzo.stoakes@...cle.com
Cc: ziy@...dia.com,
	baolin.wang@...ux.alibaba.com,
	Liam.Howlett@...cle.com,
	npache@...hat.com,
	ryan.roberts@....com,
	dev.jain@....com,
	baohua@...nel.org,
	ioworker0@...il.com,
	richard.weiyang@...il.com,
	linux-kernel@...r.kernel.org,
	linux-mm@...ck.org
Subject: [PATCH mm-new 0/2] mm/khugepaged: refactor and merge PTE scanning logic

Hi all,

This series cleans up the almost-duplicated PTE scanning logic in the
collapse path.

The first one is a preparatory step that refactors both loops to use
a single if-else-if-else-if chain for checking disjoint PTEs.

The second one then extracts the common logic into a shared helper.

Thanks,
Lance

Lance Yang (2):
  mm/khugepaged: optimize PTE scanning with if-else-if-else-if chain
  mm/khugepaged: merge PTE scanning logic into a new helper

 mm/khugepaged.c | 171 +++++++++++++++++++++++++++++-------------------
 1 file changed, 104 insertions(+), 67 deletions(-)

-- 
2.49.0