linux-kernel - Re: [PATCH v2 2/4] rust: sync: implement `Borrow` and `BorrowMut` for `Arc` types

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Message-Id: <DAMI04WSAC0P.3EU5B6GMY8EMQ@kernel.org>
Date: Sat, 14 Jun 2025 21:20:44 +0200
From: "Benno Lossin" <lossin@...nel.org>
To: "Alexandre Courbot" <acourbot@...dia.com>, "Danilo Krummrich"
 <dakr@...nel.org>, "Miguel Ojeda" <ojeda@...nel.org>, "Alex Gaynor"
 <alex.gaynor@...il.com>, "Boqun Feng" <boqun.feng@...il.com>, "Gary Guo"
 <gary@...yguo.net>, Björn Roy Baron
 <bjorn3_gh@...tonmail.com>, "Andreas Hindborg" <a.hindborg@...nel.org>,
 "Alice Ryhl" <aliceryhl@...gle.com>, "Trevor Gross" <tmgross@...ch.edu>
Cc: <rust-for-linux@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v2 2/4] rust: sync: implement `Borrow` and `BorrowMut`
 for `Arc` types

On Fri Jun 13, 2025 at 3:46 PM CEST, Alexandre Courbot wrote:
> Implement `Borrow<T>` and `BorrowMut<T>` for `UniqueArc<T>`, and
> `Borrow<T>` for `Arc<T>`. This allows these containers to be used in
> generic APIs asking for types implementing those traits. `T` and `&mut
> T` also implement those traits allowing users to use either owned,
> shared or borrowed values.
>
> `ForeignOwnable` makes a call to its own `borrow` method which must be
> disambiguated.
>
> Reviewed-by: Alice Ryhl <aliceryhl@...gle.com>
> Signed-off-by: Alexandre Courbot <acourbot@...dia.com>

With the doc comments fixed as detailed in the other thread:

Reviewed-by: Benno Lossin <lossin@...nel.org>

---
Cheers,
Benno

> ---
>  rust/kernel/sync/arc.rs | 84 ++++++++++++++++++++++++++++++++++++++++++++++++-
>  1 file changed, 83 insertions(+), 1 deletion(-)