Re: [PATCH] rust: maple_tree: implement Send and Sync for MapleTree
flat view
From: Alice Ryhl <aliceryhl@google.com>
Date: 2026-09-08 08:49:40
Also in:
lkml, rust-for-linux
On Tue, Sep 8, 2026 at 9:51 AM Eliot Courtney [off-list ref] wrote:
quoted hunk ↗ jump to hunk
+// SAFETY: `&MapleTree<T>` never hands out `&T`; all entry access is serialized +// by `ma_lock` or `&mut Guard`, so `T: Send` suffices (`T: Sync` not required). +unsafe impl<T: ForeignOwnable + Send> Sync for MapleTree<T> {}
This is true now, but will change if load_rcu() from https://lore.kernel.org/all/20260116-rcu-box-v1-2-38ebfbcd53f0@google.com/ (local) got merged. It might be better to just pre-emptively require T: Sync now? Alice