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)

• COOLING5d [PATCH 00/12] mm: make userland page table freeing RCU-safe
  2026-09-01 11:08 · 3 replies in 7d · "Lorenzo Stoakes (ARM)" <ljs@kernel.org>

Active reviewers (last 30 days)

• David Hildenbrand (Arm) <david@kernel.org>
  2 attestations (2 Acked-by) · last on 2026-08-31
• Mike Rapoport (Microsoft) <rppt@kernel.org>
  2 attestations (2 Acked-by) · last on 2026-08-31

Recent patches

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

• COOLING5d [PATCH 12/12] mm: change the contract for free_pgtables(), update docs
  2026-09-01 · "Lorenzo Stoakes (ARM)" <ljs@kernel.org>
• COOLING5d [PATCH 11/12] mm: make userland page table freeing RCU-safe
  2026-09-01 · "Lorenzo Stoakes (ARM)" <ljs@kernel.org>
• COOLING5d [PATCH 01/12] mm/huge_memory: zap deposited page tables after an RCU grace period
  2026-09-01 · "Lorenzo Stoakes (ARM)" <ljs@kernel.org>
• WARM2d [PATCH 10/11] mm/sparse-vmemmap: drop unused section_nr_vmemmap_pages() arguments
  2026-08-31 · Muchun Song <hidden>
• WARM2d [PATCH 09/11] mm/sparse-vmemmap: drop the extra tail page from device DAX reservation
  2026-08-31 · Muchun Song <hidden>
• WARM2d [PATCH 07/11] mm/sparse-vmemmap: move HVO helpers to a public header
  2026-08-31 · Muchun Song <hidden>
• WARM2d [PATCH 06/11] mm/sparse-vmemmap: switch device DAX to shared tail vmemmap pages
  2026-08-31 · Muchun Song <hidden>
• WARM2d [PATCH 05/11] mm/sparse-vmemmap: set section order for device DAX
  2026-08-31 · Muchun Song <hidden>
• WARM2d [PATCH 04/11] mm/sparse-vmemmap: prepare DAX vmemmap population for section orders
  2026-08-31 · Muchun Song <hidden>
• WARM2d [PATCH 03/11] mm/sparse-vmemmap: open-code init_compound_tail()
  2026-08-31 · Muchun Song <hidden>
• WARM2d [PATCH 02/11] mm/sparse-vmemmap: factor out shared vmemmap tail page allocation
  2026-08-31 · Muchun Song <hidden>
• WARM2d [PATCH 01/11] mm/sparse-vmemmap: introduce CONFIG_SPARSEMEM_VMEMMAP_OPTIMIZATION
  2026-08-31 · Muchun Song <hidden>
• COOLING6d IN LINUX-NEXT: 27 (27M) [PATCH 2/8] mm: Stop using pxd_ERROR()
  2026-08-31 · Anshuman Khandual <hidden>
• COOLING6d IN LINUX-NEXT: 27 (27M) [PATCH 1/8] mm: Make ptval_to_str() generally available
  2026-08-31 · Anshuman Khandual <hidden>
• COOLING11d [RFC V3 2/8] mm: Stop using pxd_ERROR()
  2026-08-18 · Anshuman Khandual <hidden>
• COOLING11d [RFC V3 1/8] mm: Make ptrval_to_str() generally available
  2026-08-18 · Anshuman Khandual <hidden>
• COLD25d [RFC V2 6/6] mm: Drop pxd_ERROR()
  2026-08-11 · Anshuman Khandual <hidden>
• COLD32d [PATCH v2 6/6] mm: constify the pte_offset_map_ro_nolock() return value
  2026-08-03 · Pedro Falcato <pfalcato@suse.de>
• COLD41d [PATCH 5/5] mm: constify the pte_offset_map_ro_nolock() return value
  2026-07-24 · Pedro Falcato <pfalcato@suse.de>
• COLD31d [PATCH] tools: Use fputc() calls in some functions
  2026-07-23 · Markus Elfring <hidden>
• COLD26d [PATCH 17/22] mm: pagewalk: drop redundant address check for kernel mm walks
  2026-07-14 · Kevin Brodsky <hidden>
• COLD26d [PATCH 04/22] mm: use mm_is_kernel() in generic page table code
  2026-07-14 · Kevin Brodsky <hidden>
• COLD26d [PATCH 03/22] mm: introduce MMF_KERNEL flag and set it for init_mm
  2026-07-14 · Kevin Brodsky <hidden>
• COLD46d IN MM: 3 (3M) [PATCH v2 13/13] mm/mremap: convert mremap code to use vma_flags_t
  2026-07-11 · Lorenzo Stoakes <ljs@kernel.org>
• COLD46d IN MM [PATCH v2 12/13] mm/mprotect: convert mprotect code to use vma_flags_t
  2026-07-11 · Lorenzo Stoakes <ljs@kernel.org>
• COLD46d IN MM: 6 (6M) [PATCH v2 11/13] mm/mlock: convert mlock code to use vma_flags_t
  2026-07-11 · Lorenzo Stoakes <ljs@kernel.org>
• COLD46d IN MM: 3 (3M) [PATCH v2 10/13] mm/vma: convert miscellaneous uses of VMA flags in core mm
  2026-07-11 · Lorenzo Stoakes <ljs@kernel.org>
• COLD46d IN MM: 6 (6M) [PATCH v2 09/13] mm/vma: update create_init_stack_vma() to use vma_flags_t
  2026-07-11 · Lorenzo Stoakes <ljs@kernel.org>
• COLD46d IN MM: 3 (3M) [PATCH v2 08/13] mm: introduce vma_get_page_prot() and use it
  2026-07-11 · Lorenzo Stoakes <ljs@kernel.org>
• COLD46d IN MM: 6 (6M) [PATCH v2 07/13] mm/vma: rename vma_get_page_prot to vma_flags_to_page_prot
  2026-07-11 · Lorenzo Stoakes <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.

• STALE130d REVIEWED: 9 (9M) [PATCH v2 6/6] mm: change to return bool for the MMU notifier's young flag check
  2026-03-21 · Baolin Wang <baolin.wang@linux.alibaba.com> · 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] mm/pkeys: Remove unused tsk parameter from arch_set_user_pkey_access()
  2026-02-19 · Seongsu Park <hidden>
• STALE174d [PATCH v5 01/15] mm/kasan: add conditional checks in functions to return directly if kasan is disabled
  2026-02-25 · Baoquan He <hidden>
• STALE174d [PATCH v5 02/15] mm/kasan: rename 'kasan_arg' to 'kasan_arg_disabled'
  2026-02-25 · Baoquan He <hidden>
• STALE174d [PATCH v5 03/15] mm/kasan: mm/kasan: move kasan= code to common place
  2026-02-25 · Baoquan He <hidden>
• STALE174d [PATCH v5 04/15] mm/kasan: make kasan=on|off take effect for all three modes
  2026-02-25 · Baoquan He <hidden>
• STALE174d [PATCH v5 05/15] mm/kasan/sw_tags: don't initialize kasan if it's disabled
  2026-02-25 · Baoquan He <hidden>
• STALE174d [PATCH v5 15/15] mm/kasan: clean up unneeded ARCH_DEFER_KASAN and kasan_arch_is_ready
  2026-02-25 · Baoquan He <hidden>
• STALE187d [RFC v1 03/10] mm/debug_vm_pgtable.c: Add test to zap THP migration entry
  2026-02-25 · "Ritesh Harjani (IBM)" <ritesh.list@gmail.com>
• STALE181d [RFC v2 01/21] mm: thp: make split_huge_pmd functions return int for error propagation
  2026-02-26 · Usama Arif <usama.arif@linux.dev>
• STALE181d [RFC v2 02/21] mm: thp: propagate split failure from vma_adjust_trans_huge()
  2026-02-26 · Usama Arif <usama.arif@linux.dev>