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

Active reviewers (last 30 days)

• Matthew Wilcox (Oracle) <willy@infradead.org>
  1 attestation (1 Reviewed-by) · last on 2026-08-30
• Tal Zussman <hidden>
  1 attestation (1 Reviewed-by) · last on 2026-08-30

Recent patches

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

• HOTtoday REVIEWED: 6 (5M) [PATCH v4] mm: filemap: retain mapped dropbehind folios
  2026-08-30 · Wenjie Qi <hidden>
• DORMANTno replies Re: Linux 7.1.9
  2026-08-19 · Greg Kroah-Hartman <gregkh@linuxfoundation.org>
• COLD26d Re: Linux 6.18.45
  2026-08-19 · Greg Kroah-Hartman <gregkh@linuxfoundation.org>
• COLD52d Re: Linux 6.6.145
  2026-07-24 · Greg Kroah-Hartman <gregkh@linuxfoundation.org>
• DORMANTno replies Re: Linux 6.1.178
  2026-07-24 · Greg Kroah-Hartman <gregkh@linuxfoundation.org>
• DORMANTno replies REVIEWED: 28 (28M) [PATCH 6.6.y] mm: do file ownership checks with the proper mount idmap
  2026-07-21 · Sasha Levin <sashal@kernel.org>
• DORMANTno replies Re: Linux 7.1.4
  2026-07-18 · Greg Kroah-Hartman <gregkh@linuxfoundation.org>
• DORMANTno replies Re: Linux 6.18.39
  2026-07-18 · Greg Kroah-Hartman <gregkh@linuxfoundation.org>
• DORMANTno replies Re: Linux 6.12.96
  2026-07-18 · Greg Kroah-Hartman <gregkh@linuxfoundation.org>
• COLD60d REVIEWED: 6 (6M) [PATCH 6.1.y 1/2] writeback: Avoid contention on wb->list_lock when switching inodes
  2026-07-16 · Sasha Levin <sashal@kernel.org>
• COLD60d REVIEWED: 6 (6M) [PATCH 6.6.y 1/2] writeback: Avoid contention on wb->list_lock when switching inodes
  2026-07-16 · Sasha Levin <sashal@kernel.org>
• COLD55d REVIEWED: 28 (28M) FAILED: patch "[PATCH] mm: do file ownership checks with the proper mount idmap" failed to apply to 6.6-stable tree
  2026-07-15 · <gregkh@linuxfoundation.org>
• COLD55d REVIEWED: 28 (28M) FAILED: patch "[PATCH] mm: do file ownership checks with the proper mount idmap" failed to apply to 5.15-stable tree
  2026-07-15 · <gregkh@linuxfoundation.org>
• COLD55d REVIEWED: 28 (28M) FAILED: patch "[PATCH] mm: do file ownership checks with the proper mount idmap" failed to apply to 6.1-stable tree
  2026-07-15 · <gregkh@linuxfoundation.org>
• COOLING10d Re: [PATCH v3] mm/page_alloc: avoid direct compaction for costly __GFP_NORETRY allocations
  2026-07-10 · Matthew Wilcox <willy@infradead.org>
• COLD48d IN MM [PATCH] mm: do file ownership checks with the proper mount idmap
  2026-06-25 · Pedro Falcato <pfalcato@suse.de>
• STALE69d Re: [PATCH 1/1] iomap: avoid compaction for costly folio order allocation
  2026-06-24 · Ritesh Harjani (IBM) <ritesh.list@gmail.com>
• DORMANTno replies Re: Linux 6.12.94
  2026-06-19 · Greg Kroah-Hartman <gregkh@linuxfoundation.org>
• STALE88d REVIEWED: 6 (6M) [PATCH 6.12 109/261] writeback: Avoid contention on wb->list_lock when switching inodes
  2026-06-16 · Greg Kroah-Hartman <gregkh@linuxfoundation.org>
• STALE108d Re: Linux 6.12.91
  2026-05-23 · Greg Kroah-Hartman <gregkh@linuxfoundation.org>
• STALE110d REVIEWED: 3 (3M) [PATCH 6.12 253/666] fdget(), trivial conversions
  2026-05-20 · Greg Kroah-Hartman <gregkh@linuxfoundation.org>
• STALE130d Re: Linux 6.18.27
  2026-05-07 · Greg Kroah-Hartman <gregkh@linuxfoundation.org>
• STALE131d [PATCH 6.18 038/275] mm: call ->free_folio() directly in folio_unmap_invalidate()
  2026-05-04 · Greg Kroah-Hartman <gregkh@linuxfoundation.org>
• STALE69d Re: [PATCH 1/1] iomap: avoid compaction for costly folio order allocation
  2026-05-03 · Ritesh Harjani (IBM) <ritesh.list@gmail.com>
• STALE136d [PATCH 6.18.y] mm: call ->free_folio() directly in folio_unmap_invalidate()
  2026-04-29 · "Matthew Wilcox (Oracle)" <willy@infradead.org>
• DORMANTno replies Re: Linux 7.0.1
  2026-04-22 · Greg Kroah-Hartman <gregkh@linuxfoundation.org>
• DORMANTno replies Re: Linux 6.19.14
  2026-04-22 · Greg Kroah-Hartman <gregkh@linuxfoundation.org>
• STALE145d [PATCH v2] mm/filemap: avoid costly reclaim for high-order folio allocations
  2026-04-20 · Salvatore Dipietro <hidden>
• STALE136d [PATCH 6.18.y] mm: call ->free_folio() directly in folio_unmap_invalidate()
  2026-04-20 · "Matthew Wilcox (Oracle)" <willy@infradead.org>
• STALE136d FAILED: patch "[PATCH] mm: call ->free_folio() directly in folio_unmap_invalidate()" failed to apply to 6.18-stable tree
  2026-04-20 · <gregkh@linuxfoundation.org>

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.

• STALE181d REVIEWED: 1 (1M) FAILED: patch "[PATCH] mm: Fix a hmm_range_fault() livelock / starvation problem" failed to apply to 6.18-stable tree
  2026-03-17 · <gregkh@linuxfoundation.org> · 1 Reviewed-by
• DORMANTno replies REVIEWED: 1 (1M) [PATCH 6.18.y] mm: Fix a hmm_range_fault() livelock / starvation problem
  2026-03-17 · Thomas Hellström <thomas.hellstrom@linux.intel.com> · 1 Reviewed-by
• STALE179d REVIEWED: 1 (0M) [PATCH v1] writeback: skip sync(2) inode writeback for filesystems with no data integrity guarantees
  2026-03-18 · Joanne Koong <joannelkoong@gmail.com> · 1 Tested-by
• HOTtoday REVIEWED: 6 (5M) [PATCH v4] mm: filemap: retain mapped dropbehind folios
  2026-08-30 · Wenjie Qi <hidden> · 2 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.

• STALE167d Re: Linux 6.18.19
  2026-03-19 · Greg Kroah-Hartman <gregkh@linuxfoundation.org>
• DORMANTno replies Re: Linux 6.19.9
  2026-03-19 · Greg Kroah-Hartman <gregkh@linuxfoundation.org>
• DORMANTno replies Re: Linux 6.18.21
  2026-04-02 · Greg Kroah-Hartman <gregkh@linuxfoundation.org>
• STALE165d Re: Linux 6.19.11
  2026-04-02 · Greg Kroah-Hartman <gregkh@linuxfoundation.org>
• STALE149d Re: Linux 6.6.135
  2026-04-18 · Greg Kroah-Hartman <gregkh@linuxfoundation.org>
• DORMANTno replies Re: Linux 6.12.82
  2026-04-18 · Greg Kroah-Hartman <gregkh@linuxfoundation.org>
• STALE149d Re: Linux 6.18.23
  2026-04-18 · Greg Kroah-Hartman <gregkh@linuxfoundation.org>
• DORMANTno replies Re: Linux 6.19.13
  2026-04-18 · Greg Kroah-Hartman <gregkh@linuxfoundation.org>
• DORMANTno replies Re: Linux 6.19.14
  2026-04-22 · Greg Kroah-Hartman <gregkh@linuxfoundation.org>
• DORMANTno replies Re: Linux 7.0.1
  2026-04-22 · Greg Kroah-Hartman <gregkh@linuxfoundation.org>