linux-kernel - Re: [PATCH 2/5] rust: types: avoid `as` casts, narrow unsafe scope

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Message-ID: <CAH5fLghmVYwNKPGrtHzUQXhEyxiD=ZyF6LNHoWUREWH+dpK=DA@mail.gmail.com>
Date: Thu, 31 Oct 2024 09:46:48 +0100
From: Alice Ryhl <aliceryhl@...gle.com>
To: Tamir Duberstein <tamird@...il.com>
Cc: 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>, 
	Benno Lossin <benno.lossin@...ton.me>, Andreas Hindborg <a.hindborg@...nel.org>, 
	Trevor Gross <tmgross@...ch.edu>, Danilo Krummrich <dakr@...nel.org>, rust-for-linux@...r.kernel.org, 
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/5] rust: types: avoid `as` casts, narrow unsafe scope

On Wed, Oct 30, 2024 at 9:46 PM Tamir Duberstein <tamird@...il.com> wrote:
>
> Replace `as` casts with `cast{,_const,_mut}` which are a bit safer.
>
> Reduce the scope of unsafe blocks and add missing safety comments where
> an unsafe block has been split into several unsafe blocks.

Reducing the scope of unsafe is good, but moving calls to "cast"
outside of the scope is excessive IMO.

Alice