memory management - userfaultfd · Maintained

Maintainers

• M Andrew Morton <akpm@linux-foundation.org>
• M Mike Rapoport <rppt@kernel.org>
• R Peter Xu <peterx@redhat.com>

Paths

• F Documentation/admin-guide/mm/userfaultfd.rst
• F include/asm-generic/pgtable_uffd.h
• F include/linux/userfaultfd_k.h
• F include/uapi/linux/userfaultfd.h
• F mm/userfaultfd.c
• F tools/testing/selftests/mm/uffd-*.[ch]

Last 30 days

Recent patches

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

• STALE74d [v3 11/24] mm: thp: handle split failure in userfaultfd move_pages()
  2026-03-27 · Usama Arif <hidden>
• STALE87d [PATCH v4 23/25] mm/vma: convert vma_modify_flags[_uffd]() to use vma_flags_t
  2026-03-20 · "Lorenzo Stoakes (Oracle)" <ljs@kernel.org>
• STALE93d [PATCH v3 22/23] mm/vma: convert vma_modify_flags[_uffd]() to use vma_flags_t
  2026-03-18 · "Lorenzo Stoakes (Oracle)" <ljs@kernel.org>
• STALE94d [PATCH v2 22/23] mm/vma: convert vma_modify_flags[_uffd]() to use vma_flags_t
  2026-03-16 · "Lorenzo Stoakes (Oracle)" <ljs@kernel.org>
• STALE101d [PATCH 19/20] mm/vma: convert vma_modify_flags[_uffd]() to use vma_flags_t
  2026-03-12 · "Lorenzo Stoakes (Oracle)" <ljs@kernel.org>
• STALE104d [RFC v2 11/21] mm: thp: handle split failure in userfaultfd move_pages()
  2026-02-26 · Usama Arif <hidden>
• COLD53d [PATCH v3 2/4] mm: rename my_zero_pfn() to zero_pfn()
  2026-02-11 · Mike Rapoport <rppt@kernel.org>
• STALE119d [PATCH v2 2/4] mm: rename my_zero_pfn() to zero_pfn()
  2026-02-09 · Mike Rapoport <rppt@kernel.org>
• STALE159d REVIEWED: 2 (0M) [PATCH v6 07/14] mm: introduce generic lazy_mmu helpers
  2025-12-15 · Kevin Brodsky <hidden>
• STALE199d REVIEWED: 1 (0M) [PATCH v5 06/12] mm: introduce generic lazy_mmu helpers
  2025-11-24 · Kevin Brodsky <hidden>
• STALE210d [PATCH v4 06/12] mm: introduce generic lazy_mmu helpers
  2025-10-29 · Kevin Brodsky <hidden>
• STALE237d [PATCH v3 06/13] mm: introduce generic lazy_mmu helpers
  2025-10-15 · Kevin Brodsky <hidden>
• STALE280d REVIEWED: 11 (11M) [PATCH v2 2/7] mm: introduce local state for lazy_mmu sections
  2025-09-08 · Kevin Brodsky <hidden>
• STALE368d [PATCH v3 07/14] mm: Remove redundant pXd_devmap calls
  2025-06-19 · Alistair Popple <apopple@nvidia.com>
• STALE368d REVIEWED: 7 (6M) [PATCH v3 01/14] mm: Convert pXd_devmap checks to vma_is_dax
  2025-06-19 · Alistair Popple <apopple@nvidia.com>
• STALE298d [PATCH 2/3] mm: update core kernel code to use vm_flags_t consistently
  2025-06-18 · Lorenzo Stoakes <hidden>
• STALE368d [PATCH v2 07/14] mm: Remove redundant pXd_devmap calls
  2025-06-16 · Alistair Popple <apopple@nvidia.com>
• STALE368d REVIEWED: 7 (6M) [PATCH v2 01/14] mm: Convert pXd_devmap checks to vma_is_dax
  2025-06-16 · Alistair Popple <apopple@nvidia.com>
• STALE374d [PATCH 07/12] mm: Remove redundant pXd_devmap calls
  2025-05-29 · Alistair Popple <apopple@nvidia.com>
• STALE374d [PATCH 02/12] mm: Convert pXd_devmap checks to vma_is_dax
  2025-05-29 · Alistair Popple <apopple@nvidia.com>
• STALE497d [PATCH v6 23/26] mm: Remove pXX_devmap callers
  2025-01-10 · Alistair Popple <apopple@nvidia.com>
• STALE528d [PATCH v5 23/25] mm: Remove pXX_devmap callers
  2025-01-07 · Alistair Popple <apopple@nvidia.com>
• STALE531d [PATCH v4 23/25] mm: Remove pXX_devmap callers
  2024-12-17 · Alistair Popple <apopple@nvidia.com>
• STALE552d [PATCH v3 23/25] mm: Remove pXX_devmap callers
  2024-11-22 · Alistair Popple <apopple@nvidia.com>
• STALE634d REVIEWED: 3 (3M) [PATCH v5 11/13] mm: userfaultfd: move_pages_pte() use pte_offset_map_rw_nolock()
  2024-09-26 · Qi Zheng <hidden>
• STALE636d REVIEWED: 3 (3M) [PATCH v4 11/13] mm: userfaultfd: move_pages_pte() use pte_offset_map_rw_nolock()
  2024-09-24 · Qi Zheng <hidden>
• STALE600d [PATCH 11/12] mm: Remove pXX_devmap callers
  2024-09-10 · Alistair Popple <apopple@nvidia.com>
• STALE648d [PATCH v3 11/14] mm: userfaultfd: move_pages_pte() use pte_offset_map_rw_nolock()
  2024-09-04 · Qi Zheng <hidden>
• STALE655d [PATCH v2 11/14] mm: userfaultfd: move_pages_pte() use pte_offset_map_rw_nolock()
  2024-08-22 · Qi Zheng <hidden>
• STALE669d [PATCH 11/14] mm: userfaultfd: move_pages_pte() use pte_offset_map_maywrite_nolock()
  2024-08-21 · Qi Zheng <hidden>

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.

• STALE104d [RFC v2 11/21] mm: thp: handle split failure in userfaultfd move_pages()
  2026-02-26 · Usama Arif <hidden>
• STALE101d [PATCH 19/20] mm/vma: convert vma_modify_flags[_uffd]() to use vma_flags_t
  2026-03-12 · "Lorenzo Stoakes (Oracle)" <ljs@kernel.org>
• STALE94d [PATCH v2 22/23] mm/vma: convert vma_modify_flags[_uffd]() to use vma_flags_t
  2026-03-16 · "Lorenzo Stoakes (Oracle)" <ljs@kernel.org>
• STALE74d [v3 11/24] mm: thp: handle split failure in userfaultfd move_pages()
  2026-03-27 · Usama Arif <hidden>