linux-kernel - Re: [PATCH v3] rust: rbtree: add immutable cursor

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Message-ID: <CANiq72mekzqaNak+KYxqzxOeKpmNDYPO2bvATw6FkOjHWO1w0w@mail.gmail.com>
Date: Mon, 8 Sep 2025 18:36:56 +0200
From: Miguel Ojeda <miguel.ojeda.sandonis@...il.com>
To: Vitaly Wool <vitaly.wool@...sulko.se>
Cc: rust-for-linux@...r.kernel.org, linux-kernel@...r.kernel.org, 
	Danilo Krummrich <dakr@...nel.org>, Alice Ryhl <aliceryhl@...gle.com>, 
	Alex Gaynor <alex.gaynor@...il.com>, Boqun Feng <boqun.feng@...il.com>, 
	Gary Guo <gary@...yguo.net>, Bjorn Roy Baron <bjorn3_gh@...tonmail.com>, 
	Benno Lossin <lossin@...nel.org>, Andreas Hindborg <a.hindborg@...nel.org>, 
	Trevor Gross <tmgross@...ch.edu>, Onur Özkan <work@...rozkan.dev>
Subject: Re: [PATCH v3] rust: rbtree: add immutable cursor

On Mon, Sep 8, 2025 at 2:54 PM Vitaly Wool <vitaly.wool@...sulko.se> wrote:
>
> Sometimes we may need to iterate over, or find an element in a read
> only (or read mostly) red-black tree, and in that case we don't need a
> mutable reference to the tree, which we'll however have to take to be
> able to use the current (mutable) cursor implementation.
>
> This patch adds a simple immutable cursor implementation to RBTree,
> which enables us to use an immutable tree reference. The existing
> (fully featured) cursor implementation is renamed to CursorMut,
> while retaining its functionality.
>
> Signed-off-by: Vitaly Wool <vitaly.wool@...sulko.se>

Could you apply the `&raw` operator suggestion from v2 so that we
don't have to migrate those later?

Thanks!

(For some reason I am not Cc'd)

Cheers,
Miguel