From: Benno Lossin <benno.lossin@proton.me>
To: Boqun Feng <boqun.feng@gmail.com>,
rust-for-linux@vger.kernel.org, linux-kernel@vger.kernel.org
Cc: "Miguel Ojeda" <ojeda@kernel.org>,
"Alex Gaynor" <alex.gaynor@gmail.com>,
"Wedson Almeida Filho" <wedsonaf@gmail.com>,
"Gary Guo" <gary@garyguo.net>,
"Björn Roy Baron" <bjorn3_gh@protonmail.com>,
"Andreas Hindborg" <a.hindborg@samsung.com>,
"Alice Ryhl" <aliceryhl@google.com>,
"Martin Rodriguez Reboredo" <yakoyoku@gmail.com>,
"Obei Sideg" <linux@obei.io>
Subject: Re: [PATCH] rust: types: Make Opaque::get const
Date: Tue, 02 Apr 2024 12:49:58 +0000 [thread overview]
Message-ID: <512ad3fa-37d0-470e-9f4c-bd185d9b897f@proton.me> (raw)
In-Reply-To: <20240401214543.1242286-1-boqun.feng@gmail.com>
On 01.04.24 23:45, Boqun Feng wrote:
> To support a potential usage:
>
> static foo: Opaque<Foo> = ..; // Or defined in an extern block.
>
> ...
>
> fn bar() {
> let ptr = foo.get();
> }
>
> `Opaque::get` need to be `const`, otherwise compiler will complain
> because calls on statics are limited to const functions.
>
> Also `Opaque::get` should be naturally `const` since it's a composition
> of two `const` functions: `UnsafeCell::get` and `ptr::cast`.
>
> Signed-off-by: Boqun Feng <boqun.feng@gmail.com>
> ---
> rust/kernel/types.rs | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
Reviewed-by: Benno Lossin <benno.lossin@proton.me>
--
Cheers,
Benno
next prev parent reply other threads:[~2024-04-02 12:50 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-04-01 21:45 Boqun Feng
2024-04-01 23:21 ` Wedson Almeida Filho
2024-04-02 9:46 ` Alice Ryhl
2024-04-02 12:49 ` Benno Lossin [this message]
2024-05-05 22:26 ` Miguel Ojeda
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