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 v2 00/40] mm: make VMA flag semantics explicit, eliminate VM_SPECIAL
  2026-09-14 15:16 · 17 replies in 7d · "Lorenzo Stoakes (ARM)" <ljs@kernel.org>
• WARM1d [PATCH 00/39] mm: make VMA flag semantics explicit, eliminate VM_SPECIAL
  2026-09-08 20:19 · 16 replies in 7d · "Lorenzo Stoakes (ARM)" <ljs@kernel.org>

Active reviewers (last 30 days)

• Marc Zyngier <maz@kernel.org>
  1 attestation (1 Acked-by) · last on 2026-09-14
• Claudio Imbrenda <imbrenda@linux.ibm.com>
  1 attestation (1 Acked-by) · last on 2026-09-14
• Anup Patel <anup@brainfault.org>
  1 attestation (1 Acked-by) · last on 2026-09-14

Recent patches

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

• HOTtoday [PATCH v2 37/40] mm: eliminate VM_SPECIAL, VMA_SPECIAL_FLAGS
  2026-09-14 · "Lorenzo Stoakes (ARM)" <ljs@kernel.org>
• HOTtoday REVIEWED: 11 (11M) [PATCH v2 28/40] mm: rename is_vm_hugetlb_page() to vma_is_hugetlb()
  2026-09-14 · "Lorenzo Stoakes (ARM)" <ljs@kernel.org>
• HOTtoday [PATCH v2 27/40] mm: remove hugetlb_inline.h
  2026-09-14 · "Lorenzo Stoakes (ARM)" <ljs@kernel.org>
• HOTtoday [PATCH v2 26/40] mm: remove VMA_IO_BIT check in vma[_flags]_is_kernel_owned()
  2026-09-14 · "Lorenzo Stoakes (ARM)" <ljs@kernel.org>
• HOTtoday [PATCH v2 25/40] mm/vma: enforce that only kernel-owned mappings may set VMA_IO_BIT
  2026-09-14 · "Lorenzo Stoakes (ARM)" <ljs@kernel.org>
• HOTtoday [PATCH v2 24/40] mm/mlock: eliminate weird VMA_IO_BIT abuse and simplify
  2026-09-14 · "Lorenzo Stoakes (ARM)" <ljs@kernel.org>
• HOTtoday [PATCH v2 23/40] mm/mlock: clear VMA_LOCKED_MASK over mmap callback
  2026-09-14 · "Lorenzo Stoakes (ARM)" <ljs@kernel.org>
• HOTtoday [PATCH v2 17/40] mm/vma: add and use vma_[flags]_is_fixed_mapping
  2026-09-14 · "Lorenzo Stoakes (ARM)" <ljs@kernel.org>
• HOTtoday [PATCH v2 16/40] mm/vma: only allow mmap to clear VMA_MAYWRITE_BIT if kernel-owned
  2026-09-14 · "Lorenzo Stoakes (ARM)" <ljs@kernel.org>
• HOTtoday [PATCH v2 15/40] mm/vma: add vma[_flags]_is_kernel_owned() predicates
  2026-09-14 · "Lorenzo Stoakes (ARM)" <ljs@kernel.org>
• HOTtoday [PATCH v2 08/40] mm: add mmap action for discontiguous kernel page mapping
  2026-09-14 · "Lorenzo Stoakes (ARM)" <ljs@kernel.org>
• HOTtoday [PATCH v2 07/40] mm/vma: tidy up map kernel pages enum values
  2026-09-14 · "Lorenzo Stoakes (ARM)" <ljs@kernel.org>
• HOTtoday [PATCH v2 05/40] mm/vma: ensure mmap_prepare doesn't set actions on a mergeable vma
  2026-09-14 · "Lorenzo Stoakes (ARM)" <ljs@kernel.org>
• HOTtoday [PATCH v2 04/40] mm: consistently validate VMA state after mmap[_prepare] hooks
  2026-09-14 · "Lorenzo Stoakes (ARM)" <ljs@kernel.org>
• HOTtoday [PATCH v2 03/40] mm/vma: introduce and use vma_[flags_]can_merge()
  2026-09-14 · "Lorenzo Stoakes (ARM)" <ljs@kernel.org>
• HOTtoday [PATCH v2 02/40] mm/vma: predicate setting mmap_prepare VMA fields on new vma alloc
  2026-09-14 · "Lorenzo Stoakes (ARM)" <ljs@kernel.org>
• HOTtoday [PATCH v2 01/40] mm/vma: fix mmap_prepare file handling, remove file_doesnt_need_get
  2026-09-14 · "Lorenzo Stoakes (ARM)" <ljs@kernel.org>
• WARM1d [PATCH 36/39] mm: eliminate VM_SPECIAL, VMA_SPECIAL_FLAGS
  2026-09-08 · "Lorenzo Stoakes (ARM)" <ljs@kernel.org>
• WARM1d [PATCH 27/39] mm: rename is_vm_hugetlb_page() to vma_is_hugetlb()
  2026-09-08 · "Lorenzo Stoakes (ARM)" <ljs@kernel.org>
• WARM1d [PATCH 26/39] mm: remove hugetlb_inline.h
  2026-09-08 · "Lorenzo Stoakes (ARM)" <ljs@kernel.org>
• WARM1d [PATCH 25/39] mm: remove VMA_IO_BIT check in vma[_flags]_is_kernel_owned()
  2026-09-08 · "Lorenzo Stoakes (ARM)" <ljs@kernel.org>
• WARM1d [PATCH 24/39] mm/vma: enforce that only kernel-owned mappings may set VMA_IO_BIT
  2026-09-08 · "Lorenzo Stoakes (ARM)" <ljs@kernel.org>
• WARM1d [PATCH 23/39] mm/mlock: eliminate weird VMA_IO_BIT abuse and simplify
  2026-09-08 · "Lorenzo Stoakes (ARM)" <ljs@kernel.org>
• WARM1d [PATCH 22/39] mm/mlock: clear VMA_LOCKED_MASK over mmap callback
  2026-09-08 · "Lorenzo Stoakes (ARM)" <ljs@kernel.org>
• WARM1d [PATCH 16/39] mm/vma: add and use vma_[flags]_is_fixed_mapping
  2026-09-08 · "Lorenzo Stoakes (ARM)" <ljs@kernel.org>
• WARM1d [PATCH 15/39] mm/vma: only allow mmap to clear VMA_MAYWRITE_BIT if kernel-owned
  2026-09-08 · "Lorenzo Stoakes (ARM)" <ljs@kernel.org>
• WARM1d [PATCH 14/39] mm/vma: add vma[_flags]_is_kernel_owned() predicates
  2026-09-08 · "Lorenzo Stoakes (ARM)" <ljs@kernel.org>
• WARM1d [PATCH 07/39] mm: add mmap action for discontiguous kernel page mapping
  2026-09-08 · "Lorenzo Stoakes (ARM)" <ljs@kernel.org>
• WARM1d [PATCH 06/39] mm/vma: tidy up map kernel pages enum values
  2026-09-08 · "Lorenzo Stoakes (ARM)" <ljs@kernel.org>
• WARM1d [PATCH 04/39] mm/vma: ensure mmap_prepare doesn't set actions on a mergeable vma
  2026-09-08 · "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.

• COLD33d REVIEWED: 1 (1M) [PATCH v4 03/20] mm: introduce linear_anon_page_index()
  2026-08-06 · "Lorenzo Stoakes (ARM)" <ljs@kernel.org> · 1 Reviewed-by
• COLD33d 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 16/61] proc: update /proc/PID/maps for u64 i_ino
  2026-02-26 · Jeff Layton <jlayton@kernel.org>
• COLD46d [PATCH RFC 04/11] mm: use hw_pte_t for generic PTE table storage
  2026-07-27 · Muhammad Usama Anjum <hidden>