memory management · Maintained

Maintainers

• M Andrew Morton <akpm@linux-foundation.org>

Paths

• F mm/
• F tools/mm/

Last 30 days

Most active threads (last 7 days)

• HOTtoday [PATCH v6 00/12] mm: Switch device DAX to section-based vmemmap optimization
  2026-09-30 15:08 · 12 replies in 7d · Muchun Song <hidden>
• WARM1d [PATCH 00/15] mm: eliminate &folio->page references in mm/
  2026-09-30 10:17 · 16 replies in 7d · Nilay Vaish <hidden>
• HOTtoday [RFC PATCH v2 0/4] mm: compaction: mTHP-friendly memory compaction
  2026-10-01 00:14 · 4 replies in 7d · Bo Zhang <hidden>
• HOTtoday IN LINUX-NEXT [PATCH v4 00/13] mm/collapse: separate a collapse from its callers
  2026-10-01 09:43 · 14 replies in 7d · Kiryl Shutsemau <hidden>
• HOTtoday [PATCH 0/2] mm/compaction: stop repeating failed async compaction on every THP fault
  2026-10-01 15:34 · 2 replies in 7d · Qiliang Yuan <hidden>
• WARM1d [PATCH v11 0/7] alloc_tag and module codetag section fixes
  2026-09-30 10:12 · 7 replies in 7d · Hao Ge <hao.ge@linux.dev>
• HOTtoday [PATCH v3 0/6] mm: Unify device DAX and HugeTLB vmemmap population paths
  2026-09-30 08:53 · 7 replies in 7d · Muchun Song <hidden>
• HOTtoday [PATCH 0/2] mm: preserve nolock context through memcg cleanup
  2026-10-01 04:42 · 2 replies in 7d · Karl Mehltretter <hidden>
• HOTtoday [PATCH v4 0/7] sched/numa: stop VMA scan filters from gating promotion
  2026-09-30 11:22 · 3 replies in 7d · Gregory Price <gourry@gourry.net>
• DORMANTno replies [PATCH v4 0/2] writeback: let foreign flushes reach dying cgwbs
  2026-09-30 19:35 · 2 replies in 7d · Liz Fong-Jones <hidden>

Active reviewers (last 30 days)

• David Hildenbrand (Arm) <david@kernel.org>
  140 attestations (108 Acked-by, 32 Suggested-by) · last on 2026-09-30
• Zi Yan <ziy@nvidia.com>
  104 attestations (15 Acked-by, 76 Reviewed-by, 13 Suggested-by) · last on 2026-10-01
• Qi Zheng <qi.zheng@linux.dev>
  69 attestations (69 Acked-by) · last on 2026-09-30
• Kiryl Shutsemau (Meta) <kas@kernel.org>
  60 attestations (14 Acked-by, 2 Reported-by, 39 Reviewed-by, 5 Suggested-by) · last on 2026-09-30
• Mike Rapoport (Microsoft) <rppt@kernel.org>
  56 attestations (42 Acked-by, 1 Reported-by, 13 Reviewed-by) · last on 2026-09-30
• Baolin Wang <baolin.wang@linux.alibaba.com>
  43 attestations (42 Reviewed-by, 1 Suggested-by) · last on 2026-09-28
• Yeoreum Yun <hidden>
  43 attestations (43 Reviewed-by) · last on 2026-09-23
• Barry Song <baohua@kernel.org>
  42 attestations (38 Reviewed-by, 4 Suggested-by) · last on 2026-09-24
• Lorenzo Stoakes <ljs@kernel.org>
  40 attestations (15 Acked-by, 19 Reviewed-by, 6 Suggested-by) · last on 2026-09-30
• SJ Park <sj@kernel.org>
  33 attestations (31 Reviewed-by, 2 Suggested-by) · last on 2026-09-28

Recent patches

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

• HOTtoday [PATCH 2/2] mm/compaction: defer failed async direct compaction
  2026-10-01 · Qiliang Yuan <hidden>
• HOTtoday [PATCH 1/2] mm/compaction: keep compaction deferral state per migration mode
  2026-10-01 · Qiliang Yuan <hidden>
• DORMANTno replies [PATCH] mm: don't ioremap COWed anon pages in generic_access_phys()
  2026-10-01 · Nguyen Ngoc Thang <hidden>
• HOTtoday [PATCH] mm/migrate: look up consecutive pages together in do_pages_stat_array()
  2026-10-01 · Qiliang Yuan <hidden>
• DORMANTno replies Re: [PATCH v4 10/13] mm/collapse: open-code collapse_single_pmd() in its two callers
  2026-10-01 · "David Hildenbrand (Arm)" <david@kernel.org>
• HOTtoday [PATCH] mm/swap: submit the last readahead batch before unplugging
  2026-10-01 · Alexandre Ghiti <alex@ghiti.fr>
• DORMANTno replies REVIEWED: 24 (24M) [PATCH v6] mm/page_alloc: avoid direct reclaim and compaction for costly __GFP_NORETRY allocations
  2026-10-01 · Salvatore Dipietro <hidden>
• DORMANTno replies [PATCH 2/2] mm/memcontrol: defer final objcg release from no-lock frees
  2026-10-01 · Karl Mehltretter <hidden>
• HOTtoday [PATCH 1/2] mm/slub: preserve no-lock freeing after memcg charge failure
  2026-10-01 · Karl Mehltretter <hidden>
• HOTtoday [RFC PATCH 2/6] mm/memfd_luo: Set Liveupdate level of a memfd file handler
  2026-10-01 · Samiullah Khawaja <hidden>
• DORMANTno replies [RFC PATCH v2 4/4] mm: compaction: skip unmovable blocks for non-costly proactive mTHP compaction
  2026-10-01 · Bo Zhang <hidden>
• HOTtoday [RFC PATCH v2 3/4] mm: compaction: skip isolating large folios that already satisfy mTHP
  2026-10-01 · Bo Zhang <hidden>
• HOTtoday [RFC PATCH v2 2/4] mm: compaction: target mTHP order for proactive compaction
  2026-10-01 · Bo Zhang <hidden>
• HOTtoday [RFC PATCH v2 1/4] mm: compaction: parameterize fragmentation score by order
  2026-10-01 · Bo Zhang <hidden>
• HOTtoday [PATCH] mm: Make swapoff interruptible when unusing mms/shmem
  2026-09-30 · Chris Down <chris@chrisdown.name>
• DORMANTno replies REVIEWED: 11 (11M) [PATCH 6.18.y] mm/execmem: make the populate and alloc atomic
  2026-09-30 · Atish Patra <atish.patra@linux.dev>
• HOTtoday [PATCH] mm/slab: sample slab_state once in kmem_cache_destroy()
  2026-09-30 · Imre Kaloz <kaloz@kernel.org>
• HOTtoday [PATCH v4 2/2] writeback: switch a replaced cgwb's inodes to its successor
  2026-09-30 · Liz Fong-Jones <hidden>
• HOTtoday [PATCH v4 1/2] writeback: let foreign flushes reach dying cgwbs
  2026-09-30 · Liz Fong-Jones <hidden>
• HOTtoday REVIEWED: 4 (4M) [PATCH v2 2/2] mm/mremap: fix locked_vm leak by splitting VMA for MREMAP_DONTUNMAP
  2026-09-30 · "Lorenzo Stoakes (ARM)" <ljs@kernel.org>
• HOTtoday REVIEWED: 4 (4M) [PATCH v2 1/2] mm/mremap: fix locked_vm leak from MREMAP_DONTUNMAP self-merge
  2026-09-30 · "Lorenzo Stoakes (ARM)" <ljs@kernel.org>
• HOTtoday REVIEWED: 1 (1M) [PATCH v2] mm/vma: don't remove VMA from rmap if pgoff unchanged
  2026-09-30 · "Lorenzo Stoakes (ARM)" <ljs@kernel.org>
• HOTtoday [PATCH 1/1] mm/memory_hotplug: fix missing rollback in __add_pages()
  2026-09-30 · Lance Yang <lance.yang@linux.dev>
• HOTtoday [PATCH] fixup! mm/sparse-vmemmap: switch device DAX to shared tail vmemmap pages
  2026-09-30 · Muchun Song <hidden>
• HOTtoday REVIEWED: 20 (20M) [PATCH v6 11/12] mm/sparse-vmemmap: drop unused section_nr_vmemmap_pages() arguments
  2026-09-30 · Muchun Song <hidden>
• HOTtoday REVIEWED: 20 (20M) [PATCH v6 10/12] mm/sparse-vmemmap: drop the extra tail page from device DAX reservation
  2026-09-30 · Muchun Song <hidden>
• HOTtoday REVIEWED: 17 (17M) [PATCH v6 09/12] powerpc/mm: switch device DAX to shared tail vmemmap pages
  2026-09-30 · Muchun Song <hidden>
• HOTtoday REVIEWED: 31 (31M) [PATCH v6 08/12] mm/sparse-vmemmap: move vmemmap optimization helpers to a public header
  2026-09-30 · Muchun Song <hidden>
• HOTtoday REVIEWED: 3 (3M) [PATCH v6 07/12] mm/sparse-vmemmap: switch device DAX to shared tail vmemmap pages
  2026-09-30 · Muchun Song <hidden>
• HOTtoday REVIEWED: 20 (20M) [PATCH v6 06/12] mm/sparse-vmemmap: set compound page order for device DAX
  2026-09-30 · Muchun Song <hidden>

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.

• STALE193d REVIEWED: 12 (12M) [PATCH v6 1/6] mm/vmalloc: extract vm_area_free_pages() helper from vfree()
  2026-03-21 · Shivam Kalra via B4 Relay <devnull+shivamkalra98.zohomail.in@kernel.org> · 1 Reviewed-by
• STALE192d REVIEWED: 2 (2M) [PATCH 6.12.y 1/4] mm: shmem: fix potential data corruption during shmem swapin
  2026-03-23 · Hugh Dickins <hughd@google.com> · 1 Tested-by
• STALE192d REVIEWED: 5 (5M) [PATCH 6.12.y 2/4] mm: shmem: avoid unpaired folio_unlock() in shmem_swapin_folio()
  2026-03-23 · Hugh Dickins <hughd@google.com> · 2 Reviewed-by
• STALE192d REVIEWED: 7 (7M) [PATCH 6.12.y 3/4] mm/shmem, swap: improve cached mTHP handling and fix potential hang
  2026-03-23 · Hugh Dickins <hughd@google.com> · 2 Reviewed-by, 1 Tested-by
• STALE192d REVIEWED: 5 (5M) [PATCH 6.12.y 4/4] mm/shmem, swap: avoid redundant Xarray lookup during swapin
  2026-03-23 · Hugh Dickins <hughd@google.com> · 3 Reviewed-by
• STALE190d REVIEWED: 12 (12M) [PATCH v7 1/6] mm/vmalloc: extract vm_area_free_pages() helper from vfree()
  2026-03-24 · Shivam Kalra via B4 Relay <devnull+shivamkalra98.zohomail.in@kernel.org> · 1 Reviewed-by
• STALE183d REVIEWED: 12 (12M) [PATCH v8 1/6] mm/vmalloc: extract vm_area_free_pages() helper from vfree()
  2026-03-27 · Shivam Kalra via B4 Relay <devnull+shivamkalra98.zohomail.in@kernel.org> · 1 Reviewed-by
• STALE176d REVIEWED: 7 (7M) [PATCH v2 3/3] mm/swap_io.c: rename swap_writepage_* to swap_write_folio_*
  2026-03-28 · Barry Song <hidden> · 2 Reviewed-by
• STALE177d REVIEWED: 1 (1M) [PATCH v2 03/12] mm/mglru: relocate the LRU scan batch limit to callers
  2026-03-28 · Kairui Song via B4 Relay <devnull+kasong.tencent.com@kernel.org> · 1 Reviewed-by
• STALE177d REVIEWED: 1 (1M) [PATCH v2 04/12] mm/mglru: restructure the reclaim loop
  2026-03-28 · Kairui Song via B4 Relay <devnull+kasong.tencent.com@kernel.org> · 1 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.

• DORMANTno replies [PATCH] kasan: fix bug type classification for SW_TAGS mode
  2026-03-05 · Andrey Ryabinin <ryabinin.a.a@gmail.com>
• STALE205d [PATCH v3 4/6] mm: add a batched helper to clear the young flag for large folios
  2026-03-06 · Baolin Wang <baolin.wang@linux.alibaba.com>
• STALE207d [PATCH 3/3] mm: shrinker: remove unnecessary check in shrink_slab_memcg()
  2026-03-06 · Haifeng Xu <hidden>
• STALE115d [PATCH 01/10] mm/damon: add CONFIG_DAMON_DEBUG_SANITY
  2026-03-06 · SeongJae Park <sj@kernel.org>
• STALE115d [PATCH 03/10] mm/damon/core: add damon_del_region() debug_sanity check
  2026-03-06 · SeongJae Park <sj@kernel.org>
• STALE115d [PATCH 04/10] mm/damon/core: add damon_nr_regions() debug_sanity check
  2026-03-06 · SeongJae Park <sj@kernel.org>
• STALE115d [PATCH 05/10] mm/damon/core: add damon_merge_two_regions() debug_sanity check
  2026-03-06 · SeongJae Park <sj@kernel.org>
• STALE115d [PATCH 06/10] mm/damon/core: add damon_merge_regions_of() debug_sanity check
  2026-03-06 · SeongJae Park <sj@kernel.org>
• STALE115d [PATCH 07/10] mm/damon/core: add damon_split_region_at() debug_sanity check
  2026-03-06 · SeongJae Park <sj@kernel.org>
• STALE115d [PATCH 08/10] mm/damon/core: add damon_reset_aggregated() debug_sanity check
  2026-03-06 · SeongJae Park <sj@kernel.org>