maple tree · Supported

Maintainers

• M Liam R. Howlett <liam@infradead.org>
• R Alice Ryhl <aliceryhl@google.com>
• R Andrew Ballance <andrewjballance@gmail.com>

Paths

• F Documentation/core-api/maple_tree.rst
• F include/linux/maple_tree.h
• F include/trace/events/maple_tree.h
• F lib/maple_tree.c
• F lib/region_alloc_benchmark.c
• F lib/test_maple_tree.c
• F rust/helpers/maple_tree.c
• F rust/kernel/maple_tree.rs
• F tools/testing/radix-tree/maple.c
• F tools/testing/shared/linux/maple_tree.h

Last 30 days

Active reviewers (last 30 days)

• Gary Guo <gary@garyguo.net>
  2 attestations (2 Reviewed-by) · last on 2026-09-08
• Alice Ryhl <aliceryhl@google.com>
  2 attestations (2 Reviewed-by) · last on 2026-09-08
• Boqun Feng <boqun@kernel.org>
  2 attestations (2 Reviewed-by) · last on 2026-09-08

Recent patches

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

• COOLING12d REVIEWED: 25 (25M) [PATCH v2] rust: maple_tree: implement Send and Sync for MapleTree
  2026-09-08 · Eliot Courtney <hidden>
• COLD15d REVIEWED: 25 (25M) [PATCH] rust: maple_tree: implement Send and Sync for MapleTree
  2026-09-08 · Eliot Courtney <hidden>
• STALE67d [RFC PATCH v2 2/4] rust: maple_tree: Add load_rcu()
  2026-07-18 · Boqun Feng <boqun@kernel.org>
• COLD57d [PATCH v3] lib: test bitmap vs IDA vs Maple Tree performance for region allocations
  2026-07-17 · Yury Norov <hidden>
• STALE69d [PATCH v2] lib: test bitmap vs IDA vs Maple Tree performance for region allocations
  2026-07-11 · Yury Norov <hidden>
• STALE74d [PATCH] lib: test bitmap vs Maple Tree performance for region allocations
  2026-07-11 · Yury Norov <hidden>
• STALE70d [PATCH 2/3] rust: maple_tree: Add load_rcu()
  2026-06-05 · Boqun Feng <boqun@kernel.org>
• STALE70d [PATCH 2/3] rust: maple_tree: add load_rcu()
  2026-06-05 · Boqun Feng <boqun@kernel.org>
• DORMANTno replies REVIEWED: 16 (16M) [PATCH v3] rust: maple_tree: implement Send and Sync for MapleTree
  2026-05-11 · Joel Fernandes <joelagnelf@nvidia.com>
• STALE139d [PATCH v2] rust: maple_tree: implement Send and Sync for MapleTree
  2026-05-06 · Joel Fernandes <joelagnelf@nvidia.com>
• STALE139d [PATCH v12 22/22] rust: maple_tree: implement Send and Sync for MapleTree
  2026-04-25 · Joel Fernandes <joelagnelf@nvidia.com>
• STALE153d [PATCH v2] rust: maple_tree: implement Send and Sync for MapleTree
  2026-04-22 · Joel Fernandes <joelagnelf@nvidia.com>
• STALE155d [PATCH RFC] rust: maple_tree: implement Send and Sync for MapleTree
  2026-04-20 · Joel Fernandes <joelagnelf@nvidia.com>
• STALE245d [PATCH RFC 2/2] rust: maple_tree: add load_rcu()
  2026-01-16 · Alice Ryhl <aliceryhl@google.com>
• STALE197d REVIEWED: 6 (5M) [PATCH v2 10/27] rust: maple_tree: add __rust_helper to helpers
  2026-01-05 · Alice Ryhl <aliceryhl@google.com>
• STALE279d [PATCH] rust: maple_tree: rcu_read_lock() in destructor to silence lockdep
  2025-12-17 · Alice Ryhl <aliceryhl@google.com>
• STALE282d [PATCH 23/46] rust: maple_tree: add __rust_helper to helpers
  2025-12-02 · Alice Ryhl <aliceryhl@google.com>
• STALE345d [PATCH v3 2/2] rust: drop `error::to_result` and utilize `ToResult`
  2025-10-13 · Onur Özkan <work@onurozkan.dev>
• STALE367d [PATCH] rust: maple_tree: fix intra-doc link
  2025-09-10 · Miguel Ojeda <ojeda@kernel.org>
• STALE385d REVIEWED: 15 (15M) [PATCH] maple_tree: remove lockdep_map_p typedef
  2025-09-02 · Alice Ryhl <aliceryhl@google.com>
• STALE386d REVIEWED: 22 (22M) [PATCH v3 3/3] rust: maple_tree: add MapleTreeAlloc
  2025-09-02 · Alice Ryhl <aliceryhl@google.com>
• STALE386d REVIEWED: 16 (16M) [PATCH v3 2/3] rust: maple_tree: add lock guard for maple tree
  2025-09-02 · Alice Ryhl <aliceryhl@google.com>
• STALE386d [PATCH v3 1/3] rust: maple_tree: add MapleTree
  2025-09-02 · Alice Ryhl <aliceryhl@google.com>
• STALE394d [PATCH v2 4/5] rust: maple_tree: add MapleTreeAlloc
  2025-08-19 · Alice Ryhl <aliceryhl@google.com>
• STALE394d REVIEWED: 1 (1M) [PATCH v2 3/5] rust: maple_tree: add MapleTree::lock() and load()
  2025-08-19 · Alice Ryhl <aliceryhl@google.com>
• STALE394d [PATCH v2 2/5] rust: maple_tree: add MapleTree
  2025-08-19 · Alice Ryhl <aliceryhl@google.com>
• STALE394d [PATCH v2 1/5] maple_tree: remove lockdep_map_p typedef
  2025-08-19 · Alice Ryhl <aliceryhl@google.com>
• STALE400d [PATCH 3/3] rust: maple_tree: add MapleTreeAlloc
  2025-07-26 · Alice Ryhl <aliceryhl@google.com>
• STALE400d [PATCH 2/3] rust: maple_tree: add MapleTree::lock() and load()
  2025-07-26 · Alice Ryhl <aliceryhl@google.com>
• STALE400d [PATCH 1/3] rust: maple_tree: add MapleTree
  2025-07-26 · Alice Ryhl <aliceryhl@google.com>

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.

• DORMANTno replies REVIEWED: 16 (16M) [PATCH v3] rust: maple_tree: implement Send and Sync for MapleTree
  2026-05-11 · Joel Fernandes <joelagnelf@nvidia.com> · 2 Reviewed-by
• COLD15d REVIEWED: 25 (25M) [PATCH] rust: maple_tree: implement Send and Sync for MapleTree
  2026-09-08 · Eliot Courtney <hidden> · 3 Reviewed-by
• COOLING12d REVIEWED: 25 (25M) [PATCH v2] rust: maple_tree: implement Send and Sync for MapleTree
  2026-09-08 · Eliot Courtney <hidden> · 3 Reviewed-by