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)

• WARM1d [PATCH] fs/proc: fix KPF_KSM reported for all anonymous pages
  2026-06-22 09:39 · 0 replies in 7d · Jinjiang Tu <hidden>
• WARM1d [PATCH] selftests: proc: include fcntl.h in proc-pidns
  2026-06-18 15:14 · 0 replies in 7d · Amin Vakil <hidden>

Active reviewers (last 30 days)

• Sashiko AI review <sashiko-bot@kernel.org>
  3 attestations (3 Reported-by) · last on 2026-05-29
• Lorenzo Stoakes <ljs@kernel.org>
  2 attestations (1 Reviewed-by, 1 Tested-by) · last on 2026-06-04
• kernel test robot <hidden>
  1 attestation (1 Reported-by) · last on 2026-06-04
• Balbir Singh <hidden>
  1 attestation (1 Reviewed-by) · last on 2026-06-04
• David Hildenbrand (Arm) <david@kernel.org>
  1 attestation (1 Acked-by) · last on 2026-06-04
• Oscar Salvador (SUSE) <osalvador@kernel.org>
  1 attestation (1 Reviewed-by) · last on 2026-06-04

Recent patches

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

• WARM1d [PATCH] fs/proc: fix KPF_KSM reported for all anonymous pages
  2026-06-22 · Jinjiang Tu <hidden>
• WARM1d [PATCH] selftests: proc: include fcntl.h in proc-pidns
  2026-06-18 · Amin Vakil <hidden>
• COOLING7d [PATCH v2] proc: only bump parent nlink when registering directories
  2026-06-13 · Krzysztof Wilczyński <kwilczynski@kernel.org>
• COOLING10d [PATCH] proc: only bump parent nlink when registering directories
  2026-06-12 · Krzysztof Wilczyński <kwilczynski@kernel.org>
• COOLING13d Re: [PATCH 2/2] fs/proc/task_mmu: read proc/pid/smaps_rollup under per-vma lock
  2026-06-09 · Lorenzo Stoakes <ljs@kernel.org>
• COOLING13d [PATCH 2/2] fs/proc/task_mmu: read proc/pid/smaps_rollup under per-vma lock
  2026-06-06 · Suren Baghdasaryan <surenb@google.com>
• COOLING13d [PATCH 1/2] fs/proc/task_mmu: change lock_vma_range() to return error code
  2026-06-06 · Suren Baghdasaryan <surenb@google.com>
• COOLING9d [PATCH v2 01/22] VFS: use wait_var_event for waiting in d_alloc_parallel()
  2026-06-05 · Al Viro <viro@zeniv.linux.org.uk>
• COLD19d [PATCH] fixup! proc: protect ptrace_may_access() with exec_update_lock (part 1)
  2026-06-04 · Jann Horn <jannh@google.com>
• COLD19d IN MM: 37 (35M) [PATCH v3 1/2] fs/proc/task_mmu: do not warn on seeing non-migration pmd entry
  2026-06-04 · Dev Jain <dev.jain@arm.com>
• COLD23d [PATCH RFC v4 04/25] fs: add real_fs to track task's actual fs_struct
  2026-06-01 · Christian Brauner <brauner@kernel.org>
• COLD23d [PATCH v2 1/2] fs/proc/task_mmu: do not warn on seeing non-migration pmd entry
  2026-05-30 · Dev Jain <dev.jain@arm.com>
• COLD15d IN MM [PATCH 3/6] fs/proc/task_mmu: fix hugetlb self-deadlock in pagemap_scan_pte_hole()
  2026-05-29 · "Kiryl Shutsemau (Meta)" <kas@kernel.org>
• COLD15d IN MM [PATCH 2/6] fs/proc/task_mmu: use huge_page_size() in pagemap_scan_hugetlb_entry()
  2026-05-29 · "Kiryl Shutsemau (Meta)" <kas@kernel.org>
• COLD15d IN MM [PATCH 1/6] fs/proc/task_mmu: fix make_uffd_wp_huge_pte() prot-update race
  2026-05-29 · "Kiryl Shutsemau (Meta)" <kas@kernel.org>
• COOLING14d [PATCH v4 1/3] proc: allow to mark /proc files permanent outside of fs/proc/
  2026-05-29 · Mateusz Guzik <hidden>
• COLD22d [PATCH] fs/proc/task_mmu: do not warn on seeing non-migration pmd entry
  2026-05-29 · Dev Jain <dev.jain@arm.com>
• COOLING14d [PATCH 07/15] mm: replace direct FOLIO_MAPPING_ANON usage with helpers
  2026-05-27 · tao <hidden>
• COOLING7d [PATCH v3] security: Expand task_setscheduler LSM hook to include CPU affinity mask
  2026-05-26 · Aaron Tomlin <atomlin@atomlin.com>
• COOLING13d [PATCH 02/17] proc: replace __get_free_page() with kmalloc()
  2026-05-23 · "Mike Rapoport (Microsoft)" <rppt@kernel.org>
• COLD19d [PATCH 2/2] proc: protect ptrace_may_access() with exec_update_lock (FD links)
  2026-05-18 · Jann Horn <jannh@google.com>
• COLD19d [PATCH 1/2] proc: protect ptrace_may_access() with exec_update_lock (part 1)
  2026-05-18 · Jann Horn <jannh@google.com>
• COLD39d [PATCH v2 2/3] security: Expand task_setscheduler LSM hook to include CPU affinity mask
  2026-05-09 · Aaron Tomlin <atomlin@atomlin.com>
• COLD42d [PATCH 2/3] security: Expand task_setscheduler LSM hook to include CPU affinity mask
  2026-05-09 · Aaron Tomlin <atomlin@atomlin.com>
• COOLING9d [RFC PATCH 01/25] VFS: use wait_var_event for waiting in d_alloc_parallel()
  2026-05-05 · Al Viro <viro@zeniv.linux.org.uk>
• COLD43d [PATCH] fdinfo: Add fops flag to allow CAP_PERFMON to see fdinfo
  2026-05-04 · David Francis <hidden>
• COLD55d [PATCH v4 2/7] VFS: use wait_var_event for waiting in d_alloc_parallel()
  2026-04-30 · NeilBrown <hidden>
• COLD43d [PATCH v4 2/7] VFS: use wait_var_event for waiting in d_alloc_parallel()
  2026-04-30 · NeilBrown <hidden>
• COLD54d Re: [PATCH v3 04/19] VFS: use wait_var_event for waiting in d_alloc_parallel()
  2026-04-29 · Al Viro <viro@zeniv.linux.org.uk>
• COLD56d [PATCH v7 2/4] x86/process: Add a procfs file with hardware address masking
  2026-04-29 · Maciej Wieczor-Retman <hidden>

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.

• STALE132d REVIEWED: 14 (14M) [PATCH v2 mm-stable] procfs: avoid fetching build ID while holding VMA lock
  2026-01-29 · Andrii Nakryiko <andrii@kernel.org> · 1 Reviewed-by, 1 Tested-by
• STALE141d REVIEWED: 1 (0M) [PATCH v2] docs: filesystems: ensure proc pid substitutable is complete
  2026-01-31 · Thomas Böhler <hidden> · 1 Acked-by
• DORMANTno replies REVIEWED: 24 (24M) FAILED: Patch "procfs: fix possible double mmput() in do_procmap_query()" failed to apply to 6.12-stable tree
  2026-03-01 · Sasha Levin <sashal@kernel.org> · 1 Reviewed-by, 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.

• DORMANTno replies [PATCH] proc: Redundant header files exist
  2025-12-13 · Lizhe <hidden>
• DORMANTno replies [PATCH v19] exec: Fix dead-lock in de_thread with ptrace_attach
  2025-12-19 · Bernd Edlinger <hidden>
• DORMANTno replies [PATCH] proc: uptime: print 64-bit seconds values
  2025-12-22 · Jaime Saguillo Revilla <hidden>
• STALE179d [PATCH 1/1] proc: test lseek on /proc/net/dev
  2025-12-26 · Alexey Dobriyan <hidden>
• DORMANTno replies [PATCH 2/2] proc: rewrite next_tgid()
  2025-12-26 · Alexey Dobriyan <hidden>
• DORMANTno replies [PATCH v2 2/2] proc: rewrite next_tgid()
  2025-12-26 · Alexey Dobriyan <hidden>
• STALE124d [PATCH 19/19] printk: Remove CON_ENABLED flag
  2025-12-27 · Marcos Paulo de Souza <hidden>
• COLD57d [PATCH v7 1/5] docs: proc: add documentation about mount restrictions
  2026-01-13 · Alexey Gladkov <legion@kernel.org>
• COLD57d [PATCH v7 3/5] proc: Disable cancellation of subset=pid option
  2026-01-13 · Alexey Gladkov <legion@kernel.org>
• COLD57d [PATCH v7 5/5] docs: proc: add documentation about relaxing visibility restrictions
  2026-01-13 · Alexey Gladkov <legion@kernel.org>