memory mapping · Maintained

Maintainers

• M Andrew Morton <akpm@linux-foundation.org>
• M Liam R. Howlett <liam@infradead.org>
• M Lorenzo Stoakes <ljs@kernel.org>
• R Vlastimil Babka <vbabka@kernel.org>
• R Jann Horn <jannh@google.com>
• R Pedro Falcato <pfalcato@suse.de>

Paths

• F drivers/char/mem.c
• F include/trace/events/mmap.h
• F fs/proc/task_mmu.c
• F fs/proc/task_nommu.c
• F mm/mincore.c
• F mm/mlock.c
• F mm/mmap.c
• F mm/mprotect.c
• F mm/mremap.c
• F mm/mseal.c
• F mm/msync.c
• F mm/nommu.c
• F mm/vma.c
• F mm/vma.h
• F mm/vma_exec.c
• F mm/vma_init.c
• F mm/vma_internal.h
• F tools/testing/selftests/mm/merge.c
• F tools/testing/vma/

Last 30 days

Most active threads (last 7 days)

• HOTtoday [PATCH v6 00/39] mm: make VMA flag semantics explicit, eliminate VM_SPECIAL
  2026-10-13 15:25 · 17 replies in 7d · "Lorenzo Stoakes (ARM)" <ljs@kernel.org>
• HOTtoday IN LINUX-NEXT [PATCH v5 00/38] mm: make VMA flag semantics explicit, eliminate VM_SPECIAL
  2026-10-09 18:17 · 16 replies in 7d · "Lorenzo Stoakes (ARM)" <ljs@kernel.org>
• HOTtoday [PATCH v8 00/15] s390/mm: Batch PTE updates in lazy MMU mode
  2026-10-07 11:42 · 2 replies in 7d · Alexander Gordeev <agordeev@linux.ibm.com>

Active reviewers (last 30 days)

• Zi Yan <ziy@nvidia.com>
  43 attestations (13 Acked-by, 30 Reviewed-by) · last on 2026-10-13
• David Hildenbrand (Arm) <david@kernel.org>
  25 attestations (25 Acked-by) · last on 2026-10-13
• Suren Baghdasaryan <surenb@google.com>
  18 attestations (18 Reviewed-by) · last on 2026-10-13
• Gregory Price (Meta) <gourry@gourry.net>
  12 attestations (12 Reviewed-by) · last on 2026-10-13
• Marc Zyngier <maz@kernel.org>
  4 attestations (4 Acked-by) · last on 2026-10-13
• Claudio Imbrenda <imbrenda@linux.ibm.com>
  4 attestations (4 Acked-by) · last on 2026-10-13
• Anup Patel <anup@brainfault.org>
  4 attestations (4 Acked-by) · last on 2026-10-13
• Kevin Brodsky <hidden>
  1 attestation (1 Reviewed-by) · last on 2026-10-07

Recent patches

Most-recent 30 patches in this subsystem on linux-s390 (capped at 30), ordered by date desc.

• HOTtoday REVIEWED: 21 (21M) [PATCH v6 37/39] mm: eliminate VM_SPECIAL, VMA_SPECIAL_FLAGS
  2026-10-13 · "Lorenzo Stoakes (ARM)" <ljs@kernel.org>
• HOTtoday REVIEWED: 4 (4M) [PATCH v6 30/39] mm/vma: introduce vma[_flags]_is_mm_backed()
  2026-10-13 · "Lorenzo Stoakes (ARM)" <ljs@kernel.org>
• HOTtoday REVIEWED: 32 (32M) [PATCH v6 28/39] mm: rename is_vm_hugetlb_page() to vma_is_hugetlb()
  2026-10-13 · "Lorenzo Stoakes (ARM)" <ljs@kernel.org>
• HOTtoday REVIEWED: 21 (21M) [PATCH v6 27/39] mm: remove hugetlb_inline.h
  2026-10-13 · "Lorenzo Stoakes (ARM)" <ljs@kernel.org>
• HOTtoday REVIEWED: 17 (17M) [PATCH v6 26/39] mm: remove VMA_IO_BIT check in vma[_flags]_is_mm_managed()
  2026-10-13 · "Lorenzo Stoakes (ARM)" <ljs@kernel.org>
• HOTtoday REVIEWED: 4 (4M) [PATCH v6 25/39] mm/vma: enforce that mm-managed mappings may not set VMA_IO_BIT
  2026-10-13 · "Lorenzo Stoakes (ARM)" <ljs@kernel.org>
• HOTtoday REVIEWED: 21 (21M) [PATCH v6 24/39] mm/mlock: eliminate weird VMA_IO_BIT abuse and simplify
  2026-10-13 · "Lorenzo Stoakes (ARM)" <ljs@kernel.org>
• HOTtoday REVIEWED: 21 (21M) [PATCH v6 23/39] mm/mlock: clear VMA_LOCKED_MASK over mmap callback
  2026-10-13 · "Lorenzo Stoakes (ARM)" <ljs@kernel.org>
• HOTtoday REVIEWED: 28 (28M) [PATCH v6 17/39] mm/vma: add and use vma_[flags]_is_fixed_mapping
  2026-10-13 · "Lorenzo Stoakes (ARM)" <ljs@kernel.org>
• HOTtoday REVIEWED: 21 (21M) [PATCH v6 16/39] mm/vma: only allow mmap to clear VMA_MAYWRITE_BIT if not mm-managed
  2026-10-13 · "Lorenzo Stoakes (ARM)" <ljs@kernel.org>
• HOTtoday REVIEWED: 28 (28M) [PATCH v6 15/39] mm/vma: add vma[_flags]_is_mm_managed() predicates
  2026-10-13 · "Lorenzo Stoakes (ARM)" <ljs@kernel.org>
• HOTtoday REVIEWED: 4 (4M) [PATCH v6 08/39] mm: add mmap action for discontiguous kernel page mapping
  2026-10-13 · "Lorenzo Stoakes (ARM)" <ljs@kernel.org>
• HOTtoday REVIEWED: 30 (30M) [PATCH v6 06/39] mm/vma: tidy up map kernel pages enum values
  2026-10-13 · "Lorenzo Stoakes (ARM)" <ljs@kernel.org>
• HOTtoday REVIEWED: 30 (30M) [PATCH v6 04/39] mm/vma: ensure mmap_prepare doesn't set actions on a mergeable vma
  2026-10-13 · "Lorenzo Stoakes (ARM)" <ljs@kernel.org>
• HOTtoday REVIEWED: 13 (13M) [PATCH v6 03/39] mm: consistently validate VMA state after mmap[_prepare] hooks
  2026-10-13 · "Lorenzo Stoakes (ARM)" <ljs@kernel.org>
• HOTtoday REVIEWED: 30 (30M) [PATCH v6 02/39] mm/vma: introduce and use vma_[flags_]can_merge()
  2026-10-13 · "Lorenzo Stoakes (ARM)" <ljs@kernel.org>
• HOTtoday REVIEWED: 7 (7M) [PATCH v6 01/39] mm/vma: fix mmap_prepare file handling, remove file_doesnt_need_get
  2026-10-13 · "Lorenzo Stoakes (ARM)" <ljs@kernel.org>
• HOTtoday IN LINUX-NEXT: 21 (21M) [PATCH v5 36/38] mm: eliminate VM_SPECIAL, VMA_SPECIAL_FLAGS
  2026-10-09 · "Lorenzo Stoakes (ARM)" <ljs@kernel.org>
• HOTtoday IN LINUX-NEXT: 32 (32M) [PATCH v5 27/38] mm: rename is_vm_hugetlb_page() to vma_is_hugetlb()
  2026-10-09 · "Lorenzo Stoakes (ARM)" <ljs@kernel.org>
• HOTtoday IN LINUX-NEXT: 21 (21M) [PATCH v5 26/38] mm: remove hugetlb_inline.h
  2026-10-09 · "Lorenzo Stoakes (ARM)" <ljs@kernel.org>
• HOTtoday IN LINUX-NEXT [PATCH v5 25/38] mm: remove VMA_IO_BIT check in vma[_flags]_is_mm_managed()
  2026-10-09 · "Lorenzo Stoakes (ARM)" <ljs@kernel.org>
• HOTtoday IN LINUX-NEXT: 4 (4M) [PATCH v5 24/38] mm/vma: enforce that mm-managed mappings may not set VMA_IO_BIT
  2026-10-09 · "Lorenzo Stoakes (ARM)" <ljs@kernel.org>
• HOTtoday IN LINUX-NEXT: 4 (4M) [PATCH v5 23/38] mm/mlock: eliminate weird VMA_IO_BIT abuse and simplify
  2026-10-09 · "Lorenzo Stoakes (ARM)" <ljs@kernel.org>
• HOTtoday IN LINUX-NEXT: 4 (4M) [PATCH v5 22/38] mm/mlock: clear VMA_LOCKED_MASK over mmap callback
  2026-10-09 · "Lorenzo Stoakes (ARM)" <ljs@kernel.org>
• HOTtoday IN LINUX-NEXT: 11 (11M) [PATCH v5 16/38] mm/vma: add and use vma_[flags]_is_fixed_mapping
  2026-10-09 · "Lorenzo Stoakes (ARM)" <ljs@kernel.org>
• HOTtoday IN LINUX-NEXT: 4 (4M) [PATCH v5 15/38] mm/vma: only allow mmap to clear VMA_MAYWRITE_BIT if not mm-managed
  2026-10-09 · "Lorenzo Stoakes (ARM)" <ljs@kernel.org>
• HOTtoday IN LINUX-NEXT: 11 (11M) [PATCH v5 14/38] mm/vma: add vma[_flags]_is_mm_managed() predicates
  2026-10-09 · "Lorenzo Stoakes (ARM)" <ljs@kernel.org>
• HOTtoday IN LINUX-NEXT: 4 (4M) [PATCH v5 07/38] mm: add mmap action for discontiguous kernel page mapping
  2026-10-09 · "Lorenzo Stoakes (ARM)" <ljs@kernel.org>
• HOTtoday IN LINUX-NEXT: 30 (30M) [PATCH v5 06/38] mm/vma: tidy up map kernel pages enum values
  2026-10-09 · "Lorenzo Stoakes (ARM)" <ljs@kernel.org>
• HOTtoday IN LINUX-NEXT: 30 (30M) [PATCH v5 04/38] mm/vma: ensure mmap_prepare doesn't set actions on a mergeable vma
  2026-10-09 · "Lorenzo Stoakes (ARM)" <ljs@kernel.org>

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.

• STALE61d REVIEWED: 2 (2M) [PATCH v4 03/20] mm: introduce linear_anon_page_index()
  2026-08-06 · "Lorenzo Stoakes (ARM)" <ljs@kernel.org> · 1 Reviewed-by
• STALE61d REVIEWED: 1 (0M) [PATCH v4 20/20] tools/testing/selftests/mm: add MAP_PRIVATE-/dev/zero merge tests
  2026-08-06 · "Lorenzo Stoakes (ARM)" <ljs@kernel.org> · 1 Tested-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.

• STALE200d [PATCH v4 02/25] tools/testing/vma: add unit tests flag empty, diff_pair, and[_mask] +24 more in this series
  2026-03-20 · "Lorenzo Stoakes (Oracle)" <ljs@kernel.org>
• STALE187d [v3 02/24] mm: thp: propagate split failure from vma_adjust_trans_huge()
  2026-03-27 · Usama Arif <usama.arif@linux.dev>
• STALE187d [v3 10/24] mm: thp: handle split failure in mremap move_page_tables()
  2026-03-27 · Usama Arif <usama.arif@linux.dev>
• STALE187d [v3 13/24] mm: proc: handle split_huge_pmd failure in pagemap_scan
  2026-03-27 · Usama Arif <usama.arif@linux.dev>