memory management - core · Maintained

Maintainers

• M Andrew Morton <akpm@linux-foundation.org>
• M David Hildenbrand <david@kernel.org>
• R Lorenzo Stoakes <ljs@kernel.org>
• R Liam R. Howlett <liam@infradead.org>
• R Vlastimil Babka <vbabka@kernel.org>
• R Mike Rapoport <rppt@kernel.org>
• R Suren Baghdasaryan <surenb@google.com>
• R Michal Hocko <mhocko@suse.com>

Paths

• F Documentation/admin-guide/sysctl/vm.rst
• F include/linux/folio_batch.h
• F include/linux/gfp.h
• F include/linux/gfp_types.h
• F include/linux/highmem.h
• F include/linux/leafops.h
• F include/linux/memory.h
• F include/linux/mm.h
• F include/linux/mm_*.h
• F include/linux/mmzone.h
• F include/linux/mmdebug.h
• F include/linux/mmu_notifier.h
• F include/linux/pagewalk.h
• F include/linux/pgalloc.h
• F include/linux/pgtable.h
• F include/linux/ptdump.h
• F include/linux/vmpressure.h
• F include/linux/vmstat.h
• F fs/proc/meminfo.c
• F kernel/fork.c
• F mm/Kconfig
• F mm/debug.c
• F mm/folio-compat.c
• F mm/highmem.c
• F mm/init-mm.c
• F mm/internal.h
• F mm/maccess.c
• F mm/memory.c
• F mm/mmu_notifier.c
• F mm/mmzone.c
• F mm/pagewalk.c
• F mm/pgtable-generic.c
• F mm/ptdump.c
• F mm/sparse-vmemmap.c
• F mm/sparse.c
• F mm/util.c
• F mm/vmpressure.c
• F mm/vmstat.c

Last 30 days

Most active threads (last 7 days)

• HOTtoday [RFC v2 0/3] mm/mglru: proactive aging via memory.aging
  2026-07-14 12:15 · 2 replies in 7d · Zicheng Wang <hidden>
• HOTtoday [RFC PATCH 00/13] mm/kwatch: dynamic hardware watchpoints for hunting memory corruption
  2026-07-14 18:33 · 1 reply in 7d · Jinchao Wang <hidden>

Active reviewers (last 30 days)

• Mike Rapoport (Microsoft) <rppt@kernel.org>
  36 attestations (16 Acked-by, 20 Reviewed-by) · last on 2026-07-08
• SeongJae Park <sj@kernel.org>
  16 attestations (4 Acked-by, 12 Reviewed-by) · last on 2026-07-08
• Lorenzo Stoakes <ljs@kernel.org>
  13 attestations (13 Reviewed-by) · last on 2026-07-08
• Baoquan He <hidden>
  10 attestations (10 Suggested-by) · last on 2026-07-08
• Johannes Weiner <hannes@cmpxchg.org>
  10 attestations (10 Acked-by) · last on 2026-07-08
• David Hildenbrand <david@kernel.org>
  10 attestations (5 Acked-by, 5 Suggested-by) · last on 2026-07-08
• Barry Song <baohua@kernel.org>
  5 attestations (5 Suggested-by) · last on 2026-07-08
• Matthew Wilcox <willy@infradead.org>
  3 attestations (3 Suggested-by) · last on 2026-07-08
• Eugen Hristev <hidden>
  1 attestation (1 Co-developed-by) · last on 2026-07-08
• Harry Yoo <hidden>
  1 attestation (1 Tested-by) · last on 2026-07-06

Recent patches

Most-recent 30 patches in this subsystem on linux-doc (capped at 30), ordered by date desc.

• HOTtoday [RFC PATCH 11/13] mm/kwatch: add debugfs control plane
  2026-07-14 · Jinchao Wang <hidden>
• HOTtoday [RFC v2 3/3] mm/lru_gen: expose oldest-generation page counts in memory.stat
  2026-07-14 · Zicheng Wang <hidden>
• HOTtoday [RFC v2 1/3] mm/lru_gen: add AGING counter and proactive aging helper
  2026-07-14 · Zicheng Wang <hidden>
• DORMANTno replies IN LINUX-NEXT: 7 (7M) [PATCH v9 3/3] mm: move reclaim-internal declarations out of swap.h
  2026-07-08 · Jianyue Wu <hidden>
• COOLING7d IN LINUX-NEXT: 32 (32M) [PATCH v9 2/3] mm: rename swap.c to folio.c
  2026-07-08 · Jianyue Wu <hidden>
• COOLING6d IN LINUX-NEXT: 11 (11M) [PATCH v10 12/15] userfaultfd: add UFFD_FEATURE_RWP_ASYNC for async fault resolution
  2026-07-08 · Kiryl Shutsemau <hidden>
• COOLING6d IN LINUX-NEXT: 11 (11M) [PATCH v10 10/15] mm/userfaultfd: add RWP fault delivery and expose UFFDIO_REGISTER_MODE_RWP
  2026-07-08 · Kiryl Shutsemau <hidden>
• COOLING6d IN LINUX-NEXT: 11 (11M) [PATCH v10 09/15] userfaultfd: add UFFDIO_REGISTER_MODE_RWP and UFFDIO_RWPROTECT plumbing
  2026-07-08 · Kiryl Shutsemau <hidden>
• COOLING6d IN LINUX-NEXT: 21 (21M) [PATCH v10 08/15] mm: handle VM_UFFD_RWP in khugepaged, rmap, and GUP
  2026-07-08 · Kiryl Shutsemau <hidden>
• COOLING6d IN LINUX-NEXT: 11 (11M) [PATCH v10 07/15] mm: preserve RWP marker across PTE rewrites
  2026-07-08 · Kiryl Shutsemau <hidden>
• COOLING6d IN LINUX-NEXT: 12 (12M) [PATCH v10 06/15] mm: add MM_CP_UFFD_RWP change_protection() flag
  2026-07-08 · Kiryl Shutsemau <hidden>
• COOLING6d IN LINUX-NEXT: 22 (22M) [PATCH v10 05/15] mm: add VM_UFFD_RWP VMA flag
  2026-07-08 · Kiryl Shutsemau <hidden>
• COOLING6d IN LINUX-NEXT: 12 (12M) [PATCH v10 03/15] mm: rename uffd-wp PTE accessors to uffd
  2026-07-08 · Kiryl Shutsemau <hidden>
• COOLING6d IN LINUX-NEXT: 12 (12M) [PATCH v10 01/15] mm: decouple protnone helpers from CONFIG_NUMA_BALANCING
  2026-07-08 · Kiryl Shutsemau <hidden>
• COOLING4d [PATCH v3 20/26] mm/sparse: Register information into meminspect
  2026-07-08 · Mukesh Ojha <hidden>
• COOLING4d [PATCH v3 14/26] mm/init-mm: Annotate static information into meminspect
  2026-07-08 · Mukesh Ojha <hidden>
• COOLING4d [PATCH v3 08/26] kernel/fork: Annotate static information into meminspect
  2026-07-08 · Mukesh Ojha <hidden>
• COOLING7d REVIEWED: 7 (7M) [PATCH v8 3/3] mm: move reclaim-internal declarations out of swap.h
  2026-07-07 · Jianyue Wu <hidden>
• COOLING7d REVIEWED: 32 (32M) [PATCH v8 2/3] mm: rename swap.c to folio.c
  2026-07-07 · Jianyue Wu <hidden>
• COOLING9d REVIEWED: 11 (11M) [PATCH v9 12/15] userfaultfd: add UFFD_FEATURE_RWP_ASYNC for async fault resolution
  2026-07-06 · Kiryl Shutsemau <hidden>
• COOLING9d REVIEWED: 11 (11M) [PATCH v9 10/15] mm/userfaultfd: add RWP fault delivery and expose UFFDIO_REGISTER_MODE_RWP
  2026-07-06 · Kiryl Shutsemau <hidden>
• COOLING9d REVIEWED: 11 (11M) [PATCH v9 09/15] userfaultfd: add UFFDIO_REGISTER_MODE_RWP and UFFDIO_RWPROTECT plumbing
  2026-07-06 · Kiryl Shutsemau <hidden>
• COOLING9d REVIEWED: 21 (21M) [PATCH v9 08/15] mm: handle VM_UFFD_RWP in khugepaged, rmap, and GUP
  2026-07-06 · Kiryl Shutsemau <hidden>
• COOLING9d REVIEWED: 11 (11M) [PATCH v9 07/15] mm: preserve RWP marker across PTE rewrites
  2026-07-06 · Kiryl Shutsemau <hidden>
• COOLING9d REVIEWED: 12 (12M) [PATCH v9 06/15] mm: add MM_CP_UFFD_RWP change_protection() flag
  2026-07-06 · Kiryl Shutsemau <hidden>
• COOLING9d REVIEWED: 22 (22M) [PATCH v9 05/15] mm: add VM_UFFD_RWP VMA flag
  2026-07-06 · Kiryl Shutsemau <hidden>
• COOLING9d REVIEWED: 12 (12M) [PATCH v9 03/15] mm: rename uffd-wp PTE accessors to uffd
  2026-07-06 · Kiryl Shutsemau <hidden>
• COOLING9d REVIEWED: 12 (12M) [PATCH v9 01/15] mm: decouple protnone helpers from CONFIG_NUMA_BALANCING
  2026-07-06 · Kiryl Shutsemau <hidden>
• WARM2d [PATCH v19 27/40] dept: assign dept map to mmu notifier invalidation synchronization
  2026-07-06 · Byungchul Park <byungchul@sk.com>
• WARM2d REVIEWED: 4 (0M) [PATCH v19 01/40] dept: implement DEPT(DEPendency Tracker)
  2026-07-06 · Byungchul Park <byungchul@sk.com>

Needs attention (review trailers in, no pickup)

Patches with review trailers that haven't landed in mainline and haven't been Acked by a maintainer. Oldest first.

• STALE187d REVIEWED: 1 (1M) [PATCH v5 4/4] iommu: debug-pagealloc: Check mapped/unmapped kernel memory
  2026-01-06 · Mostafa Saleh <smostafa@google.com> · 1 Reviewed-by
• STALE177d REVIEWED: 3 (2M) [PATCH v7 5/5] iommu: debug-pagealloc: Check mapped/unmapped kernel memory
  2026-01-14 · Mostafa Saleh <smostafa@google.com> · 3 Reviewed-by
• STALE167d REVIEWED: 4 (0M) Re: [PATCH v26 01/28] mm: VM_SHADOW_STACK definition for riscv
  2026-01-15 · Paul Walmsley <pjw@kernel.org> · 2 Reviewed-by, 1 Acked-by, 1 Tested-by
• STALE176d REVIEWED: 3 (3M) [PATCHv3 03/15] mm: Change the interface of prep_compound_tail()
  2026-01-15 · Kiryl Shutsemau <kas@kernel.org> · 1 Reviewed-by
• STALE176d REVIEWED: 3 (3M) [PATCHv3 04/15] mm: Rename the 'compound_head' field in the 'struct page' to 'compound_info'
  2026-01-15 · Kiryl Shutsemau <kas@kernel.org> · 1 Reviewed-by
• STALE176d REVIEWED: 3 (3M) [PATCHv3 06/15] mm: Rework compound_head() for power-of-2 sizeof(struct page)
  2026-01-15 · Kiryl Shutsemau <kas@kernel.org> · 1 Reviewed-by
• STALE167d REVIEWED: 3 (3M) [PATCHv4 02/14] mm: Change the interface of prep_compound_tail()
  2026-01-21 · Kiryl Shutsemau <kas@kernel.org> · 1 Reviewed-by
• STALE167d REVIEWED: 3 (3M) [PATCHv4 03/14] mm: Rename the 'compound_head' field in the 'struct page' to 'compound_info'
  2026-01-21 · Kiryl Shutsemau <kas@kernel.org> · 1 Reviewed-by
• STALE167d REVIEWED: 3 (3M) [PATCHv4 05/14] mm: Rework compound_head() for power-of-2 sizeof(struct page)
  2026-01-21 · Kiryl Shutsemau <kas@kernel.org> · 1 Reviewed-by
• STALE167d REVIEWED: 6 (6M) [PATCHv5 02/17] mm: Change the interface of prep_compound_tail()
  2026-01-28 · Kiryl Shutsemau <kas@kernel.org> · 2 Reviewed-by

Quiet for 30+ days

Patches with no review trailers and no replies. Either the author is heads-down elsewhere or these slipped through. Oldest first.

• STALE183d [PATCHv2 01/14] mm: Move MAX_FOLIO_ORDER definition to mmzone.h
  2025-12-18 · Kiryl Shutsemau <kas@kernel.org>
• STALE183d [PATCHv2 07/14] mm: Make page_zonenum() use head page
  2025-12-18 · Kiryl Shutsemau <kas@kernel.org>
• STALE196d [PATCH next v2 2/2] mm/huge_memory: Use per-VMA hugepage flag hints for exec THP COW
  2025-12-26 · Zhang Qilong <hidden>
• STALE194d [PATCH 22/28] arch, mm: consolidate initialization of nodes, zones and memory map
  2025-12-28 · Mike Rapoport <rppt@kernel.org>
• STALE194d [PATCH 23/28] arch, mm: consolidate initialization of SPARSE memory model
  2025-12-28 · Mike Rapoport <rppt@kernel.org>
• STALE145d [PATCH v2 23/28] arch, mm: consolidate initialization of SPARSE memory model
  2026-01-02 · Mike Rapoport <rppt@kernel.org>
• STALE180d [RFC PATCH v3 2/8] mm: constify oom_control, scan_control, and alloc_context nodemask
  2026-01-08 · Gregory Price <gourry@gourry.net>
• STALE180d [RFC PATCH v3 3/8] mm: restrict slub, compaction, and page_alloc to sysram
  2026-01-08 · Gregory Price <gourry@gourry.net>
• STALE176d [PATCHv3 07/15] mm: Make page_zonenum() use head page
  2026-01-15 · Kiryl Shutsemau <kas@kernel.org>
• STALE176d [PATCHv3 08/15] mm/sparse: Check memmap alignment for compound_info_has_mask()
  2026-01-15 · Kiryl Shutsemau <kas@kernel.org>