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Date: Sun, 01 Jun 2025 18:17:05 +0200
Message-Id: <DABBYG8W5F5U.1MXKCC6LSHBPV@kernel.org>
From: "Benno Lossin" <lossin@kernel.org>
To: "Alexandre Courbot" <acourbot@nvidia.com>, "Danilo Krummrich"
 <dakr@kernel.org>, "Miguel Ojeda" <ojeda@kernel.org>, "Alex Gaynor"
 <alex.gaynor@gmail.com>, "Boqun Feng" <boqun.feng@gmail.com>, "Gary Guo"
 <gary@garyguo.net>, =?utf-8?q?Bj=C3=B6rn_Roy_Baron?=
 <bjorn3_gh@protonmail.com>, "Andreas Hindborg" <a.hindborg@kernel.org>,
 "Alice Ryhl" <aliceryhl@google.com>, "Trevor Gross" <tmgross@umich.edu>
Cc: <rust-for-linux@vger.kernel.org>, <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH 2/4] rust: alloc: implement `Borrow` and `BorrowMut` for
 `Arc` types
X-Mailer: aerc 0.20.1
References: <20250601-borrow_impls-v1-0-e1caeb428db4@nvidia.com>
 <20250601-borrow_impls-v1-2-e1caeb428db4@nvidia.com>
In-Reply-To: <20250601-borrow_impls-v1-2-e1caeb428db4@nvidia.com>

On Sun Jun 1, 2025 at 5:00 AM CEST, Alexandre Courbot wrote:
> Implement these two common traits, which allow generic types to store
> either an owned value or a reference to it, leveraging the `Deref`
> implementation.

Same here.

---
Cheers,
Benno

>
> `Arc` can only implement `Borrow`, but `UniqueArc` is able to support
> both.
>
> `ForeignOwnable` makes a call to its own `borrow` method which must be
> disambiguated.
>
> Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>
> ---
>  rust/kernel/sync/arc.rs | 21 ++++++++++++++++++++-
>  1 file changed, 20 insertions(+), 1 deletion(-)