Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.32 as permitted sender) client-ip=23.128.96.32;
MIME-Version: 1.0
References: <20231026201855.1497680-1-benno.lossin@proton.me>
In-Reply-To: <20231026201855.1497680-1-benno.lossin@proton.me>
From:   Miguel Ojeda <miguel.ojeda.sandonis@gmail.com>
Date:   Wed, 13 Dec 2023 19:44:43 +0100
Message-ID: <CANiq72k41VmCHLFk9TAmW3VrJ=hv=e_vaVV4fjusgErVr_UmOQ@mail.gmail.com>
Subject: Re: [PATCH v3] rust: macros: improve `#[vtable]` documentation
To:     Benno Lossin <benno.lossin@proton.me>
Cc:     Miguel Ojeda <ojeda@kernel.org>,
        Wedson Almeida Filho <wedsonaf@gmail.com>,
        Alex Gaynor <alex.gaynor@gmail.com>,
        Boqun Feng <boqun.feng@gmail.com>, Gary Guo <gary@garyguo.net>,
        =?UTF-8?Q?Bj=C3=B6rn_Roy_Baron?= <bjorn3_gh@protonmail.com>,
        Andreas Hindborg <a.hindborg@samsung.com>,
        Alice Ryhl <aliceryhl@google.com>,
        Martin Rodriguez Reboredo <yakoyoku@gmail.com>,
        Asahi Lina <lina@asahilina.net>,
        Sven Van Asbroeck <thesven73@gmail.com>,
        Viktor Garske <viktor@v-gar.de>, Finn Behrens <me@kloenk.dev>,
        rust-for-linux@vger.kernel.org, linux-kernel@vger.kernel.org
Content-Type: text/plain; charset="UTF-8"
Content-Transfer-Encoding: quoted-printable
Precedence: bulk

On Thu, Oct 26, 2023 at 10:20=E2=80=AFPM Benno Lossin <benno.lossin@proton.=
me> wrote:
>
> Traits marked with `#[vtable]` need to provide default implementations
> for optional functions. The C side represents these with `NULL` in the
> vtable, so the default functions are never actually called. We do not
> want to replicate the default behavior from C in Rust, because that is
> not maintainable. Therefore we should use `build_error` in those default
> implementations. The error message for that is provided at
> `kernel::error::VTABLE_DEFAULT_ERROR`.
>
> Signed-off-by: Benno Lossin <benno.lossin@proton.me>

Applied to `rust-next` (with the requested wrapping applied and
capitalized sentence).

Thanks everyone!

Cheers,
Miguel