linux-kernel - [PATCH v3 0/2] Arc methods for linked list

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Date: Mon, 11 Mar 2024 16:08:17 +0000
From: Alice Ryhl <aliceryhl@...gle.com>
To: Miguel Ojeda <ojeda@...nel.org>, Alex Gaynor <alex.gaynor@...il.com>, 
	Wedson Almeida Filho <wedsonaf@...il.com>, Boqun Feng <boqun.feng@...il.com>, Gary Guo <gary@...yguo.net>, 
	"Björn Roy Baron" <bjorn3_gh@...tonmail.com>, Benno Lossin <benno.lossin@...ton.me>, 
	Andreas Hindborg <a.hindborg@...sung.com>
Cc: rust-for-linux@...r.kernel.org, linux-kernel@...r.kernel.org, 
	Alice Ryhl <aliceryhl@...gle.com>
Subject: [PATCH v3 0/2] Arc methods for linked list

This patchset contains two useful methods for the Arc type. They will be
used in my Rust linked list implementation, which Rust Binder uses. See
the Rust Binder RFC [1] for more information. Both these commits and
the linked list that uses them are present in the branch referenced by
the RFC.

I will send the linked list to the mailing list soon.

Link: https://lore.kernel.org/rust-for-linux/20231101-rust-binder-v1-0-08ba9197f637@google.com/ [1]
Signed-off-by: Alice Ryhl <aliceryhl@...gle.com>
---
Changes in v3:
- No changes to `ArcBorrow::from_raw`, or than adding a Reviewed-by.
- Update SAFETY comment on `refcount_dec_and_test` call.
- Simplify the creation of the `UniqueArc` in `into_unique_or_drop`.
- Link to v2: https://lore.kernel.org/r/20240228-arc-for-list-v2-0-ae93201426b4@google.com

Changes in v2:
- Move raw_to_inner_ptr to ArcInner and rename to container_of.
- Reword safety conditions for raw_to_inner_ptr to match its users.
- Link to v1: https://lore.kernel.org/r/20240219-arc-for-list-v1-0-d98cd92c760b@google.com

---
Alice Ryhl (2):
      rust: sync: add `ArcBorrow::from_raw`
      rust: sync: add `Arc::into_unique_or_drop`

 rust/kernel/sync/arc.rs | 106 ++++++++++++++++++++++++++++++++++++++++--------
 1 file changed, 88 insertions(+), 18 deletions(-)
---
base-commit: 768409cff6cc89fe1194da880537a09857b6e4db
change-id: 20240209-arc-for-list-a2c126c2ad5c

Best regards,
-- 
Alice Ryhl <aliceryhl@...gle.com>