linux-kernel - Re: [PATCH v8 11/29] rust: alloc: implement kernel `Box`

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Message-ID: <20241001192834.36ec0fd7.gary@garyguo.net>
Date: Tue, 1 Oct 2024 19:28:34 +0100
From: Gary Guo <gary@...yguo.net>
To: Danilo Krummrich <dakr@...nel.org>
Cc: ojeda@...nel.org, alex.gaynor@...il.com, wedsonaf@...il.com,
 boqun.feng@...il.com, bjorn3_gh@...tonmail.com, benno.lossin@...ton.me,
 a.hindborg@...sung.com, aliceryhl@...gle.com, akpm@...ux-foundation.org,
 daniel.almeida@...labora.com, faith.ekstrand@...labora.com,
 boris.brezillon@...labora.com, lina@...hilina.net, mcanal@...lia.com,
 zhiw@...dia.com, cjia@...dia.com, jhubbard@...dia.com, airlied@...hat.com,
 ajanulgu@...hat.com, lyude@...hat.com, linux-kernel@...r.kernel.org,
 rust-for-linux@...r.kernel.org, linux-mm@...ck.org
Subject: Re: [PATCH v8 11/29] rust: alloc: implement kernel `Box`

On Tue,  1 Oct 2024 16:59:46 +0200
Danilo Krummrich <dakr@...nel.org> wrote:

> `Box` provides the simplest way to allocate memory for a generic type
> with one of the kernel's allocators, e.g. `Kmalloc`, `Vmalloc` or
> `KVmalloc`.
> 
> In contrast to Rust's `Box` type, the kernel `Box` type considers the
> kernel's GFP flags for all appropriate functions, always reports
> allocation failures through `Result<_, AllocError>` and remains
> independent from unstable features.
> 
> Reviewed-by: Benno Lossin <benno.lossin@...ton.me>
> Signed-off-by: Danilo Krummrich <dakr@...nel.org>

Reviewed-by: Gary Guo <gary@...yguo.net>

> ---
>  rust/kernel/alloc.rs      |   6 +
>  rust/kernel/alloc/kbox.rs | 455 ++++++++++++++++++++++++++++++++++++++
>  rust/kernel/prelude.rs    |   2 +-
>  3 files changed, 462 insertions(+), 1 deletion(-)
>  create mode 100644 rust/kernel/alloc/kbox.rs