proc filesystem · Maintained

Paths

• F Documentation/filesystems/proc.rst
• F fs/proc/
• F include/linux/proc_fs.h
• F tools/testing/selftests/proc/

Last 30 days

Most active threads (last 7 days)

• HOTtoday REVIEWED: 1 (0M) [PATCH RFC v3 00/17] mm/mglru: frequency guided promotion (MGLRU-FG) and flag cleanup
  2026-10-03 12:55 · 2 replies in 7d · Kairui Song <kasong@tencent.com>
• HOTtoday [PATCH v4 00/38] mm: make VMA flag semantics explicit, eliminate VM_SPECIAL
  2026-10-03 16:42 · 1 reply in 7d · "Lorenzo Stoakes (ARM)" <ljs@kernel.org>
• WARM1d [PATCH v8 00/30] mm: PMD-level swap entries for anonymous THPs
  2026-10-02 09:57 · 2 replies in 7d · Usama Arif <usama.arif@linux.dev>
• COOLING4d [RFC PATCH v2 0/3] security: Add PR_CAPBSET_DROP_MASK
  2026-09-29 13:02 · 1 reply in 7d · Jinjie Ruan <hidden>
• DORMANTno replies [RFC PATCH 2/6] mm/hugetlb: swap-in support for anonymous hugetlb folios
  2026-09-29 08:02 · 0 replies in 7d · Zongkun Lei <hidden>
• WARM1d [PATCH 0/7] multiple-filesystems: prepare for changes to VFS locking
  2026-09-29 03:43 · 1 reply in 7d · NeilBrown <hidden>
• COOLING5d [PATCH v3 00/12] CRASH_MEMACTION: describe pages to a kdump kernel (was: CRASH_WIPE_SECRETS)
  2026-09-28 17:20 · 1 reply in 7d · Jan Sebastian Götte <hidden>

Active reviewers (last 30 days)

• Lorenzo Stoakes (ARM) <ljs@kernel.org>
  19 attestations (4 Acked-by, 15 Reviewed-by) · last on 2026-09-21
• David Hildenbrand (Arm) <david@kernel.org>
  13 attestations (13 Acked-by) · last on 2026-10-03
• Liam R. Howlett (Oracle) <liam@infradead.org>
  7 attestations (7 Reviewed-by) · last on 2026-09-18
• Usama Arif <usama.arif@linux.dev>
  6 attestations (6 Acked-by) · last on 2026-09-18
• Marc Zyngier <maz@kernel.org>
  3 attestations (3 Acked-by) · last on 2026-10-03
• Claudio Imbrenda <imbrenda@linux.ibm.com>
  3 attestations (3 Acked-by) · last on 2026-10-03
• Anup Patel <anup@brainfault.org>
  3 attestations (3 Acked-by) · last on 2026-10-03
• Michal Hocko <mhocko@suse.com>
  3 attestations (3 Acked-by) · last on 2026-09-21
• SJ Park <sj@kernel.org>
  2 attestations (2 Reviewed-by) · last on 2026-09-21
• Gregory Price (Meta) <gourry@gourry.net>
  2 attestations (2 Reviewed-by) · last on 2026-09-21

Recent patches

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

• HOTtoday REVIEWED: 32 (32M) [PATCH v4 27/38] mm: rename is_vm_hugetlb_page() to vma_is_hugetlb()
  2026-10-03 · "Lorenzo Stoakes (ARM)" <ljs@kernel.org>
• DORMANTno replies [PATCH RFC v3 12/17] mm/mglru: folio LRU refs based active/inactive number accounting
  2026-10-03 · Kairui Song <kasong@tencent.com>
• HOTtoday [PATCH RFC v3 08/17] mm/smap: convert to LRU refs based operations
  2026-10-03 · Kairui Song <kasong@tencent.com>
• WARM1d [PATCH v8 17/30] mm: handle soft-dirty and uffd-wp on PMD swap entries
  2026-10-02 · Usama Arif <usama.arif@linux.dev>
• WARM1d [PATCH v8 16/30] fs/proc: account PMD swap entries in smaps
  2026-10-02 · Usama Arif <usama.arif@linux.dev>
• COOLING4d [RFC PATCH v2 2/3] security: Add PR_CAPBSET_DROP_MASK for process-wide bounding-set drops
  2026-09-29 · Jinjie Ruan <hidden>
• DORMANTno replies [RFC PATCH 2/6] mm/hugetlb: swap-in support for anonymous hugetlb folios
  2026-09-29 · Zongkun Lei <hidden>
• WARM1d [PATCH 6/7] procfs: drop parent lock for d_alloc_parallel() in iterate_shared()
  2026-09-29 · NeilBrown <hidden>
• COOLING5d [PATCH v3 08/12] mm: Add VM_CRASH_MARK
  2026-09-28 · Jan Sebastian Götte <hidden>
• COOLING4d IN LINUX-NEXT: 17 (17M) [PATCH v3 4/6] mm/vma: make MAP_PRIVATE-mapped /dev/zero mappings truly anonymous
  2026-09-26 · "Lorenzo Stoakes (ARM)" <ljs@kernel.org>
• WARM1d [PATCH v3 3/9] mm: use hw_pte_t for generic PTE table storage
  2026-09-22 · Muhammad Usama Anjum <hidden>
• COOLING5d IN LINUX-NEXT: 22 (22M) [PATCH v2 12/13] fs/proc/page: clarify comment in get_max_dump_pfn()
  2026-09-21 · "David Hildenbrand (Arm)" <david@kernel.org>
• COOLING11d REVIEWED: 16 (16M) [PATCH v4 13/15] fs: convert process/thread iterators to for_each_*_rculock
  2026-09-21 · Ye Liu <hidden>
• WARM3d IN LINUX-NEXT [PATCH v5 10/17] mm/page-flags: check page/folio->private instead of PG_private
  2026-09-21 · Zi Yan <ziy@nvidia.com>
• COLD15d IN LINUX-NEXT: 9 (9M) [PATCH v5 7/7] selftests/proc: add /proc/pid/smaps_rollup tearing tests
  2026-09-18 · Suren Baghdasaryan <surenb@google.com>
• COLD15d IN LINUX-NEXT: 9 (9M) [PATCH v5 6/7] proc/task_mmu: read proc/pid/smaps_rollup under per-vma lock
  2026-09-18 · Suren Baghdasaryan <surenb@google.com>
• COLD15d IN LINUX-NEXT: 26 (26M) [PATCH v5 5/7] proc/task_mmu: change proc_get_vma() to stop returning gate VMA at the end
  2026-09-18 · Suren Baghdasaryan <surenb@google.com>
• COLD15d IN LINUX-NEXT: 26 (26M) [PATCH v5 4/7] proc/task_mmu: remove special-casing of smap_gather_stats() start parameter
  2026-09-18 · Suren Baghdasaryan <surenb@google.com>
• COLD15d IN LINUX-NEXT: 26 (26M) [PATCH v5 3/7] proc/task_mmu: clarify shmem mapping walk conditions in smap_gather_stats()
  2026-09-18 · Suren Baghdasaryan <surenb@google.com>
• COLD15d IN LINUX-NEXT: 37 (37M) [PATCH v5 2/7] proc/task_mmu: remove unnecessary inlines in function definitions
  2026-09-18 · Suren Baghdasaryan <surenb@google.com>
• COLD15d IN LINUX-NEXT: 37 (37M) [PATCH v5 1/7] proc/task_mmu: remove unnecessary helpers
  2026-09-18 · Suren Baghdasaryan <surenb@google.com>
• COOLING13d [PATCH v5 14/17] elf: Introduce elf64_phdr_size() helper
  2026-09-18 · Jinjie Ruan <hidden>
• HOTtoday IN LINUX-NEXT: 11 (11M) [PATCH v3 28/40] mm: rename is_vm_hugetlb_page() to vma_is_hugetlb()
  2026-09-17 · "Lorenzo Stoakes (ARM)" <ljs@kernel.org>
• COOLING10d IN LINUX-NEXT [PATCH] vmcore: convert mmap_vmcore_fault() to use folios
  2026-09-15 · Tal Zussman <hidden>
• COLD18d [PATCH 1/1] proc/task_mmu: remove unnecessary inlines in function definitions
  2026-09-14 · Suren Baghdasaryan <surenb@google.com>
• COOLING10d 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>
• COOLING8d [RESEND v7 16/29] mm: handle soft-dirty and uffd-wp on PMD swap entries
  2026-09-14 · Usama Arif <usama.arif@linux.dev>
• COOLING8d [RESEND v7 15/29] fs/proc: account PMD swap entries in smaps
  2026-09-14 · Usama Arif <usama.arif@linux.dev>
• COLD15d [PATCH v4 10/16] mm/page-flags: check page/folio->private instead of PG_private
  2026-09-14 · Zi Yan <ziy@nvidia.com>
• COOLING8d IN LINUX-NEXT [PATCH] proc/task_mmu: handle special PMDs in clear_refs and pagemap
  2026-09-12 · Gregory Price <gourry@gourry.net>

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: 3 (3M) [PATCH RFC v3 1/4] sched/coredump: introduce enum task_dumpable
  2026-05-20 · "Christian Brauner (Amutable)" <brauner@kernel.org> · 1 Reviewed-by
• STALE130d REVIEWED: 3 (3M) [PATCH RFC v3 4/4] exec_state: relocate dumpable information
  2026-05-20 · "Christian Brauner (Amutable)" <brauner@kernel.org> · 1 Reviewed-by
• COLD21d REVIEWED: 10 (10M) [PATCH v3 4/7] proc/task_mmu: remove special-casing of smap_gather_stats() start parameter
  2026-09-10 · Suren Baghdasaryan <surenb@google.com> · 1 Reviewed-by
• COLD19d REVIEWED: 9 (9M) [PATCH v4 6/7] proc/task_mmu: read proc/pid/smaps_rollup under per-vma lock
  2026-09-11 · Suren Baghdasaryan <surenb@google.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.

• STALE190d [PATCH 04/53] VFS: use global wait-queue table for d_alloc_parallel()
  2026-03-12 · NeilBrown <hidden>
• STALE177d [v3 13/24] mm: proc: handle split_huge_pmd failure in pagemap_scan
  2026-03-27 · Usama Arif <usama.arif@linux.dev>
• STALE160d [RFC PATCH 6/7] mm: Make /proc/pid/numa_maps use the new generic pagewalk API
  2026-04-12 · Oscar Salvador <osalvador@suse.de>
• STALE160d [RFC PATCH 7/7] mm: Make /proc/pid/pagemap use the new generic pagewalk API
  2026-04-12 · Oscar Salvador <osalvador@suse.de>
• STALE174d [PATCH RFC 02/13] fs/proc/task_mmu: remove CONFIG_PAGE_MAPCOUNT handling for "mapmax"
  2026-04-12 · "David Hildenbrand (Arm)" <david@kernel.org>
• STALE174d [PATCH RFC 03/13] fs/proc/page: remove CONFIG_PAGE_MAPCOUNT handling for kpagecount
  2026-04-12 · "David Hildenbrand (Arm)" <david@kernel.org>
• STALE174d [PATCH RFC 04/13] fs/proc/task_mmu: remove CONFIG_PAGE_MAPCOUNT handling for PM_MMAP_EXCLUSIVE
  2026-04-12 · "David Hildenbrand (Arm)" <david@kernel.org>
• STALE174d [PATCH RFC 05/13] fs/proc/task_mmu: remove mapcount comment in smaps_account()
  2026-04-12 · "David Hildenbrand (Arm)" <david@kernel.org>
• STALE174d [PATCH RFC 06/13] fs/proc/task_mmu: remove CONFIG_PAGE_MAPCOUNT handling in smaps_account()
  2026-04-12 · "David Hildenbrand (Arm)" <david@kernel.org>
• STALE174d [PATCH RFC 11/13] mm/rmap: stop using the entire mapcount for hugetlb folios
  2026-04-12 · "David Hildenbrand (Arm)" <david@kernel.org>