page cache · Supported

Maintainers

• M Matthew Wilcox <willy@infradead.org>
• M Jan Kara <jack@suse.cz>

Paths

• F Documentation/filesystems/locking.rst
• F Documentation/filesystems/vfs.rst
• F include/linux/pagemap.h
• F include/linux/writeback.h
• F include/trace/events/filemap.h
• F include/trace/events/readahead.h
• F include/trace/events/writeback.h
• F mm/filemap.c
• F mm/page-writeback.c
• F mm/readahead.c
• F mm/truncate.c

Last 30 days

Most active threads (last 7 days)

• HOTtoday [PATCH v3 00/14] Remove PG_private by using page/folio->private checks instead
  2026-09-08 02:57 · 3 replies in 7d · Zi Yan <ziy@nvidia.com>
• WARM2d [PATCH 00/39] mm: make VMA flag semantics explicit, eliminate VM_SPECIAL
  2026-09-08 20:14 · 1 reply in 7d · "Lorenzo Stoakes (ARM)" <ljs@kernel.org>

Recent patches

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

• WARM2d [PATCH 26/39] mm: remove hugetlb_inline.h
  2026-09-08 · "Lorenzo Stoakes (ARM)" <ljs@kernel.org>
• HOTtoday [PATCH v3 14/14] mm/page-flags: remove PG_private
  2026-09-08 · Zi Yan <ziy@nvidia.com>
• HOTtoday [PATCH v3 10/14] mm/page-flags: introduce folio_test_fs_private()
  2026-09-08 · Zi Yan <ziy@nvidia.com>
• HOTtoday [PATCH v3 09/14] mm/page-flags: check page/folio->private instead of PG_private
  2026-09-08 · Zi Yan <ziy@nvidia.com>
• WARM2d [PATCH v2 3/8] mm: use hw_pte_t for generic PTE table storage
  2026-09-03 · Muhammad Usama Anjum <hidden>
• COOLING10d [PATCH v2 09/14] mm/page-flags: check page/folio->private instead of PG_private
  2026-08-31 · Zi Yan <ziy@nvidia.com>
• COOLING10d [PATCH v2 10/14] mm/page-flags: introduce folio_test_fs_private()
  2026-08-31 · Zi Yan <ziy@nvidia.com>
• COOLING10d [PATCH v2 14/14] mm/page-flags: remove PG_private
  2026-08-31 · Zi Yan <ziy@nvidia.com>
• COLD24d IN MM: 17 (17M) [PATCH v5 03/16] mm: introduce linear_anon_page_index()
  2026-08-13 · "Lorenzo Stoakes (ARM)" <ljs@kernel.org>
• COLD31d [PATCH v4 18/20] mm/vma: make MAP_PRIVATE-mapped /dev/zero mappings truly anonymous
  2026-08-06 · "Lorenzo Stoakes (ARM)" <ljs@kernel.org>
• COLD31d REVIEWED: 1 (1M) [PATCH v4 03/20] mm: introduce linear_anon_page_index()
  2026-08-06 · "Lorenzo Stoakes (ARM)" <ljs@kernel.org>
• COLD30d [PATCH 4/9] mm: use hw_pte_t for generic PTE table storage
  2026-08-06 · Muhammad Usama Anjum <hidden>
• COOLING10d [PATCH RFC 14/14] mm/page-flags: remove PG_private
  2026-08-01 · Zi Yan <ziy@nvidia.com>
• COOLING10d [PATCH RFC 09/14] mm/page-flags: check page/folio->private instead of PG_private
  2026-08-01 · Zi Yan <ziy@nvidia.com>
• COLD44d [PATCH RFC 04/11] mm: use hw_pte_t for generic PTE table storage
  2026-07-27 · Muhammad Usama Anjum <hidden>
• COLD52d IN MM: 3 (3M) [PATCH v2 18/33] mm/vma: use vma_start_pgoff(), linear_page_index() in mm code
  2026-07-10 · Lorenzo Stoakes <ljs@kernel.org>
• COLD52d IN MM: 3 (2M) [PATCH v2 17/33] mm: introduce and use linear_page_delta()
  2026-07-10 · Lorenzo Stoakes <ljs@kernel.org>
• STALE64d [PATCH 16/30] mm/vma: use vma_start_pgoff(), linear_page_index() in mm code
  2026-06-29 · Lorenzo Stoakes <ljs@kernel.org>
• STALE64d [PATCH 15/30] mm: introduce and use linear_page_delta()
  2026-06-29 · Lorenzo Stoakes <ljs@kernel.org>
• STALE138d [PATCH v3 2/4] mm: kick writeback flusher for IOCB_DONTCACHE with targeted dirty tracking
  2026-04-26 · Jeff Layton <jlayton@kernel.org>
• STALE138d [PATCH v3 1/4] mm: add NR_DONTCACHE_DIRTY node page counter
  2026-04-26 · Jeff Layton <jlayton@kernel.org>
• STALE170d [PATCH 46/53] Remove references to d_add() in documentation and comments.
  2026-03-12 · NeilBrown <hidden>
• STALE170d [PATCH 02/53] VFS: enhance d_splice_alias() to handle in-lookup dentries
  2026-03-12 · NeilBrown <hidden>
• STALE181d [PATCH v3 04/12] vfs: widen trace event i_ino fields to u64
  2026-03-04 · Jeff Layton <jlayton@kernel.org>
• STALE193d [PATCH v2 006/110] trace: reorder TP_STRUCT__entry fields for better packing on 32-bit
  2026-03-02 · Jeff Layton <jlayton@kernel.org>
• STALE193d [PATCH v2 005/110] trace: store i_ino as u64 instead of ino_t/unsigned long
  2026-03-02 · Jeff Layton <jlayton@kernel.org>
• STALE198d [PATCH 03/61] trace: update VFS-layer trace events for u64 i_ino
  2026-02-26 · Jeff Layton <jlayton@kernel.org>
• STALE199d [PATCH v1] mm: annotate data race of f_ra.prev_pos
  2026-02-26 · Jiayuan Chen <jiayuan.chen@linux.dev>
• STALE220d [RFC PATCH v1 09/37] KVM: guest_memfd: Skip LRU for guest_memfd folios
  2025-10-17 · Ackerley Tng <hidden>
• STALE355d [RFC PATCH v0] mm/vmscan: Add readahead LRU to improve readahead file page reclamation efficiency
  2025-09-16 · Lei Liu <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.

• COLD31d REVIEWED: 1 (1M) [PATCH v4 03/20] mm: introduce linear_anon_page_index()
  2026-08-06 · "Lorenzo Stoakes (ARM)" <ljs@kernel.org> · 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.

• STALE193d [PATCH v2 005/110] trace: store i_ino as u64 instead of ino_t/unsigned long
  2026-03-02 · Jeff Layton <jlayton@kernel.org>
• STALE193d [PATCH v2 006/110] trace: reorder TP_STRUCT__entry fields for better packing on 32-bit
  2026-03-02 · Jeff Layton <jlayton@kernel.org>
• STALE170d [PATCH 02/53] VFS: enhance d_splice_alias() to handle in-lookup dentries
  2026-03-12 · NeilBrown <hidden>
• STALE170d [PATCH 46/53] Remove references to d_add() in documentation and comments.
  2026-03-12 · NeilBrown <hidden>
• STALE138d [PATCH v3 1/4] mm: add NR_DONTCACHE_DIRTY node page counter
  2026-04-26 · Jeff Layton <jlayton@kernel.org>
• COLD44d [PATCH RFC 04/11] mm: use hw_pte_t for generic PTE table storage
  2026-07-27 · Muhammad Usama Anjum <hidden>