linux-kernel - Re: [PATCH v2 5/7] rust: file: add `Kuid` wrapper

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Message-ID: <CAH5fLghoyZHynwN7DK84sJERtDbuo_SbSty-0T8_xo2Dhj9Msw@mail.gmail.com>
Date:   Wed, 6 Dec 2023 14:50:15 +0100
From:   Alice Ryhl <aliceryhl@...gle.com>
To:     Peter Zijlstra <peterz@...radead.org>
Cc:     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>,
        Benno Lossin <benno.lossin@...ton.me>,
        Andreas Hindborg <a.hindborg@...sung.com>,
        Alexander Viro <viro@...iv.linux.org.uk>,
        Christian Brauner <brauner@...nel.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Arve Hjønnevåg <arve@...roid.com>,
        Todd Kjos <tkjos@...roid.com>,
        Martijn Coenen <maco@...roid.com>,
        Joel Fernandes <joel@...lfernandes.org>,
        Carlos Llamas <cmllamas@...gle.com>,
        Suren Baghdasaryan <surenb@...gle.com>,
        Dan Williams <dan.j.williams@...el.com>,
        Kees Cook <keescook@...omium.org>,
        Matthew Wilcox <willy@...radead.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Daniel Xu <dxu@...uu.xyz>, linux-kernel@...r.kernel.org,
        rust-for-linux@...r.kernel.org, linux-fsdevel@...r.kernel.org
Subject: Re: [PATCH v2 5/7] rust: file: add `Kuid` wrapper

On Wed, Dec 6, 2023 at 2:40 PM Peter Zijlstra <peterz@...radead.org> wrote:
> > I can reimplement these specific functions as inline Rust functions,
>
> That would be good, but how are you going to do that without duplicating
> the horror that is struct task_struct ?

That shouldn't be an issue. The bindgen tool takes care of generating
a Rust version of struct task_struct for us at build time. The only
thing it can't handle is inline functions and #defines.

I'll respond to the other things later. But thank you for the thorough
explanation!

Alice