linux-kernel - Re: [PATCH v4 2/9] rust: task: add `Task::current

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Date: Wed, 7 Feb 2024 10:24:59 -0300
From: Martin Rodriguez Reboredo <yakoyoku@...il.com>
To: Alice Ryhl <aliceryhl@...gle.com>, 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>,
 Peter Zijlstra <peterz@...radead.org>,
 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>
Cc: Daniel Xu <dxu@...uu.xyz>, linux-kernel@...r.kernel.org,
 rust-for-linux@...r.kernel.org, linux-fsdevel@...r.kernel.org
Subject: Re: [PATCH v4 2/9] rust: task: add `Task::current_raw`

On 2/2/24 07:55, Alice Ryhl wrote:
> Introduces a safe function for getting a raw pointer to the current
> task.
> 
> When writing bindings that need to access the current task, it is often
> more convenient to call a method that directly returns a raw pointer
> than to use the existing `Task::current` method. However, the only way
> to do that is `bindings::get_current()` which is unsafe since it calls
> into C. By introducing `Task::current_raw()`, it becomes possible to
> obtain a pointer to the current task without using unsafe.
> 
> Link: https://lore.kernel.org/all/CAH5fLgjT48X-zYtidv31mox3C4_Ogoo_2cBOCmX0Ang3tAgGHA@mail.gmail.com/
> Reviewed-by: Benno Lossin <benno.lossin@...ton.me>
> Signed-off-by: Alice Ryhl <aliceryhl@...gle.com>
> ---
> [...]

Reviewed-by: Martin Rodriguez Reboredo <yakoyoku@...il.com>