tmpfs (shmem filesystem) · Maintained

Maintainers

• M Hugh Dickins <hughd@google.com>
• R Baolin Wang <baolin.wang@linux.alibaba.com>

Paths

• F include/linux/memfd.h
• F include/linux/shmem_fs.h
• F mm/memfd.c
• F mm/shmem.c
• F mm/shmem_quota.c

Last 30 days

Most active threads (last 7 days)

• HOTtoday [RFC PATCH v5 0/4] mm: avoid large folio splits when swap is unavailable
  2026-07-30 12:24 · 1 reply in 7d · Xueyuan Chen <hidden>
• HOTtoday [RFC PATCH v4 0/4] mm: avoid large folio splits when swap is unavailable
  2026-07-30 02:17 · 1 reply in 7d · Xueyuan Chen <hidden>

Active reviewers (last 30 days)

• Baolin Wang <baolin.wang@linux.alibaba.com>
  4 attestations (1 Reviewed-by, 3 Suggested-by) · last on 2026-07-30
• Qi Zheng <qi.zheng@linux.dev>
  1 attestation (1 Acked-by) · last on 2026-07-15
• Jan Kara <jack@suse.cz>
  1 attestation (1 Reviewed-by) · last on 2026-07-15
• Shakeel Butt <shakeel.butt@linux.dev>
  1 attestation (1 Reviewed-by) · last on 2026-07-15

Recent patches

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

• DORMANTno replies REVIEWED: 2 (2M) [RFC PATCH v5 4/4] mm/shmem: split large folios only on -E2BIG
  2026-07-30 · Xueyuan Chen <hidden>
• HOTtoday [RFC PATCH v4 4/4] mm/shmem: split large folios only on -E2BIG
  2026-07-30 · Xueyuan Chen <hidden>
• COOLING7d [RFC PATCH v3 4/4] mm/shmem: split large folios only on -E2BIG
  2026-07-17 · Xueyuan Chen <hidden>
• HOTtoday REVIEWED: 18 (18M) [PATCH v2] fs: push nr_cached_objects memcg gating into individual filesystems
  2026-07-15 · Usama Arif <usama.arif@linux.dev>
• COLD29d [PATCH v3 3/7] mm: Use mutable list iterators
  2026-06-22 · Kaitao Cheng <hidden>
• COLD59d [RFC PATCH v2 7/9] mm/shmem: provide VMA-hint locality for zswap large swapin
  2026-05-29 · fujunjie <hidden>
• COLD59d [RFC PATCH v2 5/9] mm: add common locality admission for zswap large swapin
  2026-05-29 · fujunjie <hidden>
• STALE70d IN MM [PATCH v5 05/12] mm, swap: unify large folio allocation
  2026-05-17 · Kairui Song via B4 Relay <devnull+kasong.tencent.com@kernel.org>
• STALE70d IN MM: 4 (4M) [PATCH v5 03/12] mm/huge_memory: move THP gfp limit helper into header
  2026-05-17 · Kairui Song via B4 Relay <devnull+kasong.tencent.com@kernel.org>
• DORMANTno replies Re: [PATCH v4 05/12] mm, swap: unify large folio allocation
  2026-05-16 · Kairui Song <hidden>
• STALE75d REVIEWED: 4 (4M) [PATCH v4 03/12] mm/huge_memory: move THP gfp limit helper into header
  2026-05-15 · Kairui Song via B4 Relay <devnull+kasong.tencent.com@kernel.org>
• STALE75d REVIEWED: 1 (1M) [PATCH v4 05/12] mm, swap: unify large folio allocation
  2026-05-15 · Kairui Song via B4 Relay <devnull+kasong.tencent.com@kernel.org>
• STALE77d Re: [PATCH v3 04/12] mm, swap: add support for stable large allocation in swap cache directly
  2026-05-12 · Baolin Wang <baolin.wang@linux.alibaba.com>
• COLD59d [PATCH v6 19/22] swap: simplify swapoff using virtual swap
  2026-05-05 · Nhat Pham <nphamcs@gmail.com>
• COLD59d [PATCH v6 14/22] mm: swap: decouple virtual swap slot from backing store
  2026-05-05 · Nhat Pham <nphamcs@gmail.com>
• COLD59d [PATCH v6 13/22] swap: manage swap entry lifecycle at the virtual swap layer
  2026-05-05 · Nhat Pham <nphamcs@gmail.com>
• COLD59d [PATCH v6 10/22] swap: move swap cache to virtual swap descriptor
  2026-05-05 · Nhat Pham <nphamcs@gmail.com>
• COLD59d [PATCH v6 09/22] mm: swap: allocate a virtual swap slot for each swapped out page
  2026-05-05 · Nhat Pham <nphamcs@gmail.com>
• COLD59d [PATCH v6 06/22] mm: swap: add a separate type for physical swap slots
  2026-05-05 · Nhat Pham <nphamcs@gmail.com>
• COLD59d [PATCH v6 03/22] mm: swap: add an abstract API for locking out swapoff
  2026-05-05 · Nhat Pham <nphamcs@gmail.com>
• COLD59d [PATCH v6 01/22] mm/swap: decouple swap cache from physical swap infrastructure
  2026-05-05 · Nhat Pham <nphamcs@gmail.com>
• STALE77d [PATCH v3 03/12] mm/huge_memory: move THP gfp limit helper into header
  2026-04-21 · Kairui Song via B4 Relay <devnull+kasong.tencent.com@kernel.org>
• STALE77d [PATCH v3 05/12] mm, swap: unify large folio allocation
  2026-04-21 · Kairui Song via B4 Relay <devnull+kasong.tencent.com@kernel.org>
• STALE102d [PATCH v2 03/11] mm/huge_memory: move THP gfp limit helper into header
  2026-04-16 · Kairui Song via B4 Relay <devnull+kasong.tencent.com@kernel.org>
• STALE102d [PATCH v2 05/11] mm, swap: unify large folio allocation
  2026-04-16 · Kairui Song via B4 Relay <devnull+kasong.tencent.com@kernel.org>
• STALE107d [PATCH RFC 2/2] mm, swap: fix race of charging into the wrong memcg for THP
  2026-04-07 · Kairui Song via B4 Relay <devnull+kasong.tencent.com@kernel.org>
• STALE90d [PATCH v5 19/21] swap: simplify swapoff using virtual swap
  2026-03-20 · Nhat Pham <nphamcs@gmail.com>
• STALE90d [PATCH v5 14/21] mm: swap: decouple virtual swap slot from backing store
  2026-03-20 · Nhat Pham <nphamcs@gmail.com>
• STALE90d [PATCH v5 13/21] swap: manage swap entry lifecycle at the virtual swap layer
  2026-03-20 · Nhat Pham <nphamcs@gmail.com>
• STALE90d [PATCH v5 10/21] swap: move swap cache to virtual swap descriptor
  2026-03-20 · Nhat Pham <nphamcs@gmail.com>

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.

• STALE156d [PATCH v3 03/20] mm: swap: add an abstract API for locking out swapoff
  2026-02-08 · Nhat Pham <nphamcs@gmail.com>
• STALE156d [PATCH v3 06/20] mm: swap: add a separate type for physical swap slots
  2026-02-08 · Nhat Pham <nphamcs@gmail.com>
• STALE156d [PATCH v3 10/20] swap: move swap cache to virtual swap descriptor
  2026-02-08 · Nhat Pham <nphamcs@gmail.com>
• STALE156d [PATCH v3 13/20] swap: manage swap entry lifecycle at the virtual swap layer
  2026-02-08 · Nhat Pham <nphamcs@gmail.com>
• STALE156d [PATCH v3 19/20] swap: simplify swapoff using virtual swap
  2026-02-08 · Nhat Pham <nphamcs@gmail.com>
• STALE154d [PATCH RFC 01/15] mm: move thp_limit_gfp_mask to header
  2026-02-19 · Kairui Song via B4 Relay <devnull+kasong.tencent.com@kernel.org>
• STALE154d [PATCH RFC 05/15] mm, swap: unify large folio allocation
  2026-02-19 · Kairui Song via B4 Relay <devnull+kasong.tencent.com@kernel.org>
• STALE133d [PATCH v4 01/21] mm/swap: decouple swap cache from physical swap infrastructure
  2026-03-18 · Nhat Pham <nphamcs@gmail.com>
• STALE133d [PATCH v4 03/21] mm: swap: add an abstract API for locking out swapoff
  2026-03-18 · Nhat Pham <nphamcs@gmail.com>
• STALE133d [PATCH v4 06/21] mm: swap: add a separate type for physical swap slots
  2026-03-18 · Nhat Pham <nphamcs@gmail.com>