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 [PATCH v8 00/15] userfaultfd: working set tracking for VM guest memory
  2026-07-03 13:36 · 3 replies in 7d · Kiryl Shutsemau <hidden>
• HOTtoday [PATCH v3 00/11] mm: PMD-level swap entries for anonymous THPs
  2026-07-03 17:40 · 1 reply in 7d · Usama Arif <hidden>
• COOLING4d [PATCH v7 00/15] userfaultfd: working set tracking for VM guest memory
  2026-06-29 12:08 · 3 replies in 7d · Kiryl Shutsemau <hidden>
• WARM2d [PATCH v3 00/21] objtool/arm64: Port klp-build to arm64
  2026-06-30 18:40 · 1 reply in 7d · Josh Poimboeuf <jpoimboe@kernel.org>
• HOTtoday IN LINUX-NEXT [PATCH 0/6] mm: preparatory patches for PMD level swap entries
  2026-06-30 16:42 · 1 reply in 7d · Usama Arif <hidden>
• WARM3d [PATCH v5] coredump: Add bit 9 of coredump_filter for pre-exit files before dumping
  2026-06-30 07:57 · 0 replies in 7d · Xin Zhao <hidden>
• COOLING5d [RFC PATCH 0/3] fs: support tasks with a null root or cwd
  2026-06-29 07:00 · 1 reply in 7d · John Ericson <hidden>

Active reviewers (last 30 days)

• Mike Rapoport (Microsoft) <rppt@kernel.org>
  6 attestations (2 Acked-by, 4 Reviewed-by) · last on 2026-07-03
• SeongJae Park <sj@kernel.org>
  4 attestations (4 Reviewed-by) · last on 2026-07-03
• David Hildenbrand (Arm) <david@kernel.org>
  3 attestations (3 Acked-by) · last on 2026-06-30
• Lorenzo Stoakes <ljs@kernel.org>
  2 attestations (2 Reviewed-by) · last on 2026-07-03
• Kevin Brodsky <hidden>
  2 attestations (2 Reviewed-by) · last on 2026-06-18
• Zi Yan <ziy@nvidia.com>
  1 attestation (1 Reviewed-by) · last on 2026-06-30

Recent patches

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

• HOTtoday [PATCH v3 06/11] mm: handle PMD swap entries in non-present PMD walkers
  2026-07-03 · Usama Arif <hidden>
• HOTtoday REVIEWED: 11 (11M) [PATCH v8 11/15] mm/pagemap: add PAGE_IS_ACCESSED for RWP tracking
  2026-07-03 · Kiryl Shutsemau <hidden>
• HOTtoday REVIEWED: 22 (22M) [PATCH v8 05/15] mm: add VM_UFFD_RWP VMA flag
  2026-07-03 · Kiryl Shutsemau <hidden>
• HOTtoday REVIEWED: 12 (12M) [PATCH v8 03/15] mm: rename uffd-wp PTE accessors to uffd
  2026-07-03 · Kiryl Shutsemau <hidden>
• WARM2d Re: [PATCH v3 14/21] objtool: Prevent kCFI hashes from being decoded as instructions
  2026-06-30 · Joe Lawrence <joe.lawrence@redhat.com>
• HOTtoday IN LINUX-NEXT: 18 (18M) [PATCH 3/6] fs/proc: use softleaf_has_pfn() in pagemap PMD walker
  2026-06-30 · Usama Arif <hidden>
• WARM3d [PATCH v5] coredump: Add bit 9 of coredump_filter for pre-exit files before dumping
  2026-06-30 · Xin Zhao <hidden>
• COOLING4d REVIEWED: 11 (11M) [PATCH v7 11/15] mm/pagemap: add PAGE_IS_ACCESSED for RWP tracking
  2026-06-29 · Kiryl Shutsemau <hidden>
• COOLING4d REVIEWED: 22 (22M) [PATCH v7 05/15] mm: add VM_UFFD_RWP VMA flag
  2026-06-29 · Kiryl Shutsemau <hidden>
• COOLING4d REVIEWED: 12 (12M) [PATCH v7 03/15] mm: rename uffd-wp PTE accessors to uffd
  2026-06-29 · Kiryl Shutsemau <hidden>
• COOLING5d [RFC PATCH 2/3] fs: support tasks with a null root or cwd
  2026-06-29 · John Ericson <hidden>
• DORMANTno replies Re: Linux 6.18.37
  2026-06-27 · Greg Kroah-Hartman <gregkh@linuxfoundation.org>
• WARM2d [RFC PATCH 5/8] mm: add reserved THP vma flag
  2026-06-27 · Qi Zheng <qi.zheng@linux.dev>
• COOLING4d [PATCH v4] coredump: Add /proc/<pid>/coredump_pre_exit for pre-exit before dumping
  2026-06-24 · Xin Zhao <hidden>
• COOLING4d [PATCH] selftests: proc: include fcntl.h in proc-pidns
  2026-06-18 · Amin Vakil <hidden>
• COOLING11d REVIEWED: 16 (15M) [PATCH -next v4 1/4] mm: Make lazy MMU mode context-aware
  2026-06-18 · Alexander Gordeev <agordeev@linux.ibm.com>
• COLD17d REVIEWED: 16 (15M) [PATCH v3 1/7] mm: Make lazy MMU mode context-aware
  2026-06-16 · Alexander Gordeev <agordeev@linux.ibm.com>
• COLD17d [GIT pull] timers/nohz for v7.2-rc1
  2026-06-13 · Thomas Gleixner <tglx@kernel.org>
• COLD17d [GIT pull] irq/core for v7.2-rc1
  2026-06-13 · Thomas Gleixner <tglx@kernel.org>
• COOLING5d [PATCH v2] proc: only bump parent nlink when registering directories
  2026-06-13 · Krzysztof Wilczyński <kwilczynski@kernel.org>
• COLD21d [PATCH v3 5/7] sched: Extend task command name with TASK_COMM_EXT_LEN
  2026-06-12 · André Almeida <andrealmeid@igalia.com>
• COLD21d [PATCH v3 2/7] treewide: Get rid of get_task_comm()
  2026-06-12 · André Almeida <andrealmeid@igalia.com>
• COLD20d [PATCH] proc: only bump parent nlink when registering directories
  2026-06-12 · Krzysztof Wilczyński <kwilczynski@kernel.org>
• DORMANTno replies Re: Linux 6.12.93
  2026-06-09 · Greg Kroah-Hartman <gregkh@linuxfoundation.org>
• COLD23d 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>
• COLD23d [PATCH 2/2] fs/proc/task_mmu: read proc/pid/smaps_rollup under per-vma lock
  2026-06-06 · Suren Baghdasaryan <surenb@google.com>
• COLD23d [PATCH 1/2] fs/proc/task_mmu: change lock_vma_range() to return error code
  2026-06-06 · Suren Baghdasaryan <surenb@google.com>
• COLD29d [PATCH] fixup! proc: protect ptrace_may_access() with exec_update_lock (part 1)
  2026-06-04 · Jann Horn <jannh@google.com>
• COLD28d 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>
• COLD31d REVIEWED: 1 (0M) [tip: timers/nohz] tick/sched: Consolidate idle time fetching APIs
  2026-06-02 · tip-bot2 for Frederic Weisbecker <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.

• STALE151d REVIEWED: 1 (0M) [PATCH v2] docs: filesystems: ensure proc pid substitutable is complete
  2026-01-31 · Thomas Böhler <hidden> · 1 Acked-by
• STALE68d REVIEWED: 5 (4M) [PATCH v3 v3 2/2] ext4: allow clearing mballoc stats through mb_stats
  2026-04-22 · Baolin Liu <hidden> · 4 Reviewed-by
• COLD41d REVIEWED: 12 (11M) [PATCH v6 v6 3/3] ext4: allow controlling mballoc stats through proc mb_stats
  2026-05-24 · Baolin Liu <hidden> · 6 Reviewed-by
• COLD35d REVIEWED: 2 (0M) [tip: irq/core] genirq/proc: Speed up /proc/interrupts iteration
  2026-05-26 · tip-bot2 for Thomas Gleixner <hidden> · 1 Reviewed-by, 1 Tested-by
• COLD35d REVIEWED: 2 (0M) [tip: irq/core] x86/irq: Move IOAPIC misrouted and PIC/APIC error counts into irq_stats
  2026-05-26 · tip-bot2 for Thomas Gleixner <hidden> · 1 Reviewed-by, 1 Tested-by
• COLD31d REVIEWED: 1 (0M) [tip: timers/nohz] tick/sched: Consolidate idle time fetching APIs
  2026-06-02 · tip-bot2 for Frederic Weisbecker <hidden> · 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 Re: Linux 5.10.247
  2025-12-06 · Greg Kroah-Hartman <gregkh@linuxfoundation.org>
• DORMANTno replies Re: Linux 5.15.197
  2025-12-06 · Greg Kroah-Hartman <gregkh@linuxfoundation.org>
• STALE209d Re: Linux 6.1.159
  2025-12-06 · Greg Kroah-Hartman <gregkh@linuxfoundation.org>
• STALE196d [PATCH v10 3/3] mm: Implement precise OOM killer task selection
  2025-12-13 · Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
• 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>
• DORMANTno replies [PATCH v11 3/3] mm: Implement precise OOM killer task selection
  2025-12-24 · Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
• STALE189d [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>