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] mm/filemap: mark lockless accesses to mapping->nrpages
  2026-10-11 11:29 · 0 replies in 7d · Nguyen Ngoc Thang <hidden>

Active reviewers (last 30 days)

• Tao Cui <hidden>
  2 attestations (2 Reviewed-by) · last on 2026-09-18
• <hidden>
  1 attestation (1 Reported-by) · last on 2026-10-11
• Nilay Shroff <hidden>
  1 attestation (1 Reviewed-by) · last on 2026-09-18

Recent patches

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

• HOTtoday [PATCH] mm/filemap: mark lockless accesses to mapping->nrpages
  2026-10-11 · Nguyen Ngoc Thang <hidden>
• DORMANTno replies Re: [syzbot] [block?] INFO: task hung in read_cache_folio (6) (extid 9db0864859224b833108)
  2026-09-28 · <hidden>
• DORMANTno replies Re: [syzbot] [block?] INFO: task hung in read_cache_folio (6) (extid 9db0864859224b833108)
  2026-09-28 · <hidden>
• COOLING4d [PATCH v9 3/3] writeback: add tracepoints for foreign bdev writeback
  2026-09-25 · Julian Sun <hidden>
• COOLING14d SUPERSEDED [PATCH v8 3/3] writeback: record bdev targets in foreign writeback tracepoints
  2026-09-22 · Julian Sun <hidden>
• COLD20d SUPERSEDED [PATCH v7 3/3] writeback: record bdev targets in foreign writeback tracepoints
  2026-09-21 · Julian Sun <hidden>
• COLD21d [PATCH v4 2/3] blk-cgroup: store blkcg in bio instead of blkg
  2026-09-20 · Yu Kuai <yukuai@kernel.org>
• COLD24d SUPERSEDED: 2 (0M) [PATCH v3 2/3] blk-cgroup: store blkcg in bio instead of blkg
  2026-09-18 · Yu Kuai <yukuai@kernel.org>
• COLD20d SUPERSEDED [PATCH v6 3/3] writeback: record bdev targets in foreign writeback tracepoints
  2026-09-17 · Julian Sun <hidden>
• DORMANTno replies SUPERSEDED [PATCH v5 3/3] writeback: record bdev targets in foreign writeback tracepoints
  2026-09-15 · Julian Sun <hidden>
• COLD27d SUPERSEDED [PATCH v4 3/3] writeback: record bdev targets in foreign writeback tracepoints
  2026-09-14 · Julian Sun <hidden>
• COLD26d SUPERSEDED: 1 (0M) [PATCH v2 2/3] blk-cgroup: store blkcg in bio instead of blkg
  2026-09-13 · Yu Kuai <yukuai@kernel.org>
• COLD16d [PATCH v2 18/26] mm/fbatch: remove lru_add_drain() and _all() calls from various
  2026-09-09 · Hugh Dickins <hughd@google.com>
• COLD16d REVIEWED: 26 (26M) [PATCH v2 02/26] mm/fbatch: allow folios_put_refs() to skip xa_is_value() entries
  2026-09-09 · Hugh Dickins <hughd@google.com>
• COLD33d [PATCH 18/25] mm/fbatch: remove lru_add_drain() and _all() calls from various
  2026-08-24 · Hugh Dickins <hughd@google.com>
• COLD33d [PATCH 02/25] mm/fbatch: allow folios_put_refs() to skip xa_is_value() entries
  2026-08-24 · Hugh Dickins <hughd@google.com>
• COLD28d SUPERSEDED: 1 (0M) [PATCH 2/3] blk-cgroup: store blkcg in bio instead of blkg
  2026-08-23 · Yu Kuai <yukuai@kernel.org>
• COLD39d [PATCH 1/7] filemap: Export filemap_invalidate_pages() to modules
  2026-08-20 · "Matthew Wilcox (Oracle)" <willy@infradead.org>
• COLD39d [PATCH 7/7] Remove folio_launder()
  2026-08-20 · "Matthew Wilcox (Oracle)" <willy@infradead.org>
• COLD53d SUPERSEDED [RFC PATCH v3 2/3] blk-cgroup: store blkcg in bio instead of blkg
  2026-08-18 · Yu Kuai <yukuai@kernel.org>
• COLD59d SUPERSEDED [RFC PATCH v2 3/4] blk-cgroup: store blkcg in bio instead of blkg
  2026-08-11 · Yu Kuai <yukuai@kernel.org>
• STALE68d LANDED: 4 (3M) [PATCH v2] block: split out a new blk_plug.h header
  2026-08-04 · Christoph Hellwig <hch@lst.de>
• STALE67d SUPERSEDED [RFC PATCH v1 2/3] blk-cgroup: store blkcg in bio instead of blkg
  2026-08-04 · Yu Kuai <yukuai@kernel.org>
• COLD42d [PATCH v19 36/40] dept: track PG_writeback with dept
  2026-07-06 · Byungchul Park <byungchul@sk.com>
• COLD42d [PATCH v19 22/40] dept: track PG_locked with dept
  2026-07-06 · Byungchul Park <byungchul@sk.com>
• STALE97d [PATCH] block: split out a new blk_plug.h helper
  2026-07-06 · Christoph Hellwig <hch@lst.de>
• STALE81d SUPERSEDED [RFC PATCH v1 06/17] blk-cgroup: support non-blocking bio association
  2026-07-04 · Yu Kuai <yukuai@kernel.org>
• STALE116d [PATCH 3/3] mm/swap: route slot free notifications through swap_ops
  2026-06-14 · Jianyue Wu <hidden>
• STALE147d [PATCH 03/12] swap,fs: move swapfile operations to struct file_operations
  2026-05-12 · Christoph Hellwig <hch@lst.de>
• STALE147d [PATCH 02/12] swap: move boilerplate code into the core swap code
  2026-05-12 · Christoph Hellwig <hch@lst.de>

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.

• STALE116d [PATCH 3/3] mm/swap: route slot free notifications through swap_ops
  2026-06-14 · Jianyue Wu <hidden>
• COLD39d [PATCH 7/7] Remove folio_launder() +3 more in this series
  2026-08-20 · "Matthew Wilcox (Oracle)" <willy@infradead.org>
• COLD33d [PATCH 18/25] mm/fbatch: remove lru_add_drain() and _all() calls from various
  2026-08-24 · Hugh Dickins <hughd@google.com>
• COLD16d [PATCH v2 18/26] mm/fbatch: remove lru_add_drain() and _all() calls from various
  2026-09-09 · Hugh Dickins <hughd@google.com>