linux-kernel - Re: [PATCH] rust: pin-init: add code blocks to `[try_][pin

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Message-Id: <DCPM31MOC3A9.25PT1N4AVJ5WZ@nvidia.com>
Date: Thu, 11 Sep 2025 11:22:33 +0900
From: "Alexandre Courbot" <acourbot@...dia.com>
To: "Benno Lossin" <lossin@...nel.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@...nel.org>,
 "Alice Ryhl" <aliceryhl@...gle.com>, "Trevor Gross" <tmgross@...ch.edu>,
 "Danilo Krummrich" <dakr@...nel.org>, "Fiona Behrens" <me@...enk.dev>,
 "Christian Schrefl" <chrisi.schrefl@...il.com>, "Alban Kurti"
 <kurti@...icto.ai>
Cc: <rust-for-linux@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] rust: pin-init: add code blocks to `[try_][pin_]init!`
 macros

On Fri Sep 5, 2025 at 11:05 PM JST, Benno Lossin wrote:
> Allow writing `_: { /* any number of statements */ }` in initializers to
> run arbitrary code during initialization.
>
>     try_init!(MyStruct {
>         _: {
>             if check_something() {
>                 return Err(MyError);
>             }
>         },
>         foo: Foo::new(val),
>         _: {
>             println!("successfully initialized `MyStruct`");
>         },
>     })
>
> Link: https://github.com/Rust-for-Linux/pin-init/pull/84/commits/2880a9b898336e2d54f80715f00ce00f21f74d2f
> Signed-off-by: Benno Lossin <lossin@...nel.org>

Tested-by: Alexandre Courbot <acourbot@...dia.com>

Thanks, this is going to be very helpful for nova-core as well.