linux-kernel - Re: [PATCH 2/2] rust: arc: remove `ArcBorrow` in favour of `WithRef`

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Date:   Fri, 22 Sep 2023 19:50:22 +0000
From:   Benno Lossin <benno.lossin@...ton.me>
To:     Alice Ryhl <aliceryhl@...gle.com>,
        Wedson Almeida Filho <wedsonaf@...il.com>
Cc:     rust-for-linux@...r.kernel.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@...sung.com>,
        linux-kernel@...r.kernel.org,
        Wedson Almeida Filho <walmeida@...rosoft.com>
Subject: Re: [PATCH 2/2] rust: arc: remove `ArcBorrow` in favour of `WithRef`

On 22.09.23 17:29, Alice Ryhl wrote:
> On Thu, Sep 21, 2023 at 11:35 PM Wedson Almeida Filho
> <wedsonaf@...il.com> wrote:
>>
>> From: Wedson Almeida Filho <walmeida@...rosoft.com>
>>
>> With GATs, we don't need a separate type to represent a borrowed object
>> with a refcount, we can just use Rust's regular shared borrowing. In
>> this case, we use `&WithRef<T>` instead of `ArcBorrow<'_, T>`.
>>
>> Co-developed-by: Boqun Feng <boqun.feng@...il.com>
>> Signed-off-by: Boqun Feng <boqun.feng@...il.com>
>> Signed-off-by: Wedson Almeida Filho <walmeida@...rosoft.com>
> 
> I wonder whether "WithArc" is a better name? After all, arc is short
> for "atomic refcount".
> I also think it's nice to include Arc in the name of the type.

I think `WithArc` would be confusing, since `Arc` is the smartpointer
that points to a `WithRef`.

-- 
Cheers,
Benno