linux-kernel - Re: [PATCH] rust: add `ARef::into

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Message-ID: <CAH5fLgiHc7azNtwTKNoLP93-APMqkK6vGFKYSEPepWoyNgNjrA@mail.gmail.com>
Date: Thu, 1 Aug 2024 16:45:02 +0200
From: Alice Ryhl <aliceryhl@...gle.com>
To: Miguel Ojeda <ojeda@...nel.org>
Cc: 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>, 
	rust-for-linux@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] rust: add `ARef::into_raw`

On Thu, Aug 1, 2024 at 4:17 PM Alice Ryhl <aliceryhl@...gle.com> wrote:
>
> Add a method for `ARef` that is analogous to `Arc::into_raw`. It is the
> inverse operation of `ARef::from_raw`, and allows you to convert the
> `ARef` back into a raw pointer while retaining ownership of the
> refcount.
>
> This new function will be used by [1] for converting the type in an
> `ARef` using `ARef::from_raw(ARef::into_raw(me).cast())`. The author has
> also needed the same function for other use-cases in the past, but [1]
> is the first to go upstream.
>
> Link: https://lore.kernel.org/r/20240801-vma-v3-1-db6c1c0afda9@google.com [1]
> Signed-off-by: Alice Ryhl <aliceryhl@...gle.com>

Actually I just realized that there's already another use on the list in
https://lore.kernel.org/all/20240725-alice-file-v8-0-55a2e80deaa8@google.com/