linux-kernel - [PATCH V3 0/5] mm/khugepaged: cleanups and scan limit fix

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Message-ID: <20260118192253.9263-4-shivankg@amd.com>
Date: Sun, 18 Jan 2026 19:22:51 +0000
From: Shivank Garg <shivankg@....com>
To: Andrew Morton <akpm@...ux-foundation.org>, David Hildenbrand
	<david@...nel.org>, Lorenzo Stoakes <lorenzo.stoakes@...cle.com>
CC: Zi Yan <ziy@...dia.com>, Baolin Wang <baolin.wang@...ux.alibaba.com>,
	"Liam R . Howlett" <Liam.Howlett@...cle.com>, Nico Pache <npache@...hat.com>,
	Ryan Roberts <ryan.roberts@....com>, Dev Jain <dev.jain@....com>, Barry Song
	<baohua@...nel.org>, Lance Yang <lance.yang@...ux.dev>, <linux-mm@...ck.org>,
	<linux-kernel@...r.kernel.org>, <shivankg@....com>
Subject: [PATCH V3 0/5] mm/khugepaged: cleanups and scan limit fix

This series contains several cleanups for mm/khugepaged.c to improve code
readability and type safety, and one functional fix to ensure
khugepaged_scan_mm_slot() correctly accounts for small VMAs towards
scan limit.

To apply this series on mm-new, please drop:
- 20251215084615.5283-3-shivankg@....com:
  [PATCH V4 0/2] mm/khugepaged: fix dirty page handling for MADV_COLLAPSE
- 20251224111351.41042-4-shivankg@....com:
  [PATCH V2 0/5] mm/khugepaged: cleanups and scan limit fix

- Apply https://lore.kernel.org/all/20260118190939.8986-2-shivankg@amd.com
  [PATCH V5 0/2] mm/khugepaged: fix dirty page handling for MADV_COLLAPSE

Thanks,

v3:
- Fold mm-khugepaged-count-small-vmas-towards-scan-limit-fix: add comment (Lance)
- Remove extern and use two tabs indent (David) 

v2:
- https://lore.kernel.org/all/20251224111351.41042-4-shivankg@amd.com
- Added a fix for small VMAs not being counted in the scan limit (Wei)
- Updated 'progress' to 'unsigned int' to match types
- Update return types of internal functions to use enum scan_result (Zi)
- Add void wrapper collapse_pte_mapped_thp() for external callers to avoid
  exposing internal enum (David)

v1:
https://lore.kernel.org/linux-mm/20251216111139.95438-2-shivankg@amd.com

Shivank Garg (5):
  mm/khugepaged: remove unnecessary goto 'skip' label
  mm/khugepaged: count small VMAs towards scan limit
  mm/khugepaged: change collapse_pte_mapped_thp() to return void
  mm/khugepaged: use enum scan_result for result variables and return
    types
  mm/khugepaged: make khugepaged_collapse_control static

 include/linux/khugepaged.h |   9 +--
 mm/khugepaged.c            | 149 +++++++++++++++++++------------------
 2 files changed, 79 insertions(+), 79 deletions(-)

-- 
2.43.0