linux-kernel - Re: [PATCH v3 2/2] rust: sync: add `Arc::into_unique_or

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Date: Mon, 11 Mar 2024 17:41:32 +0000
From: Benno Lossin <benno.lossin@...ton.me>
To: Alice Ryhl <aliceryhl@...gle.com>, 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>, Andreas Hindborg <a.hindborg@...sung.com>
Cc: rust-for-linux@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3 2/2] rust: sync: add `Arc::into_unique_or_drop`

On 3/11/24 17:08, Alice Ryhl wrote:
> Decrement the refcount of an `Arc`, but handle the case where it hits
> zero by taking ownership of the now-unique `Arc`, instead of destroying
> and deallocating it.
> 
> This is a dependency of the linked list that Rust Binder uses. The
> linked list uses this method as part of its `ListArc` abstraction.
> 
> Signed-off-by: Alice Ryhl <aliceryhl@...gle.com>

Reviewed-by: Benno Lossin <benno.lossin@...ton.me>