linux-kernel - Re: [PATCH v6 13/26] rust: alloc: implement kernel `Vec` type

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Message-ID: <a8c31bce-aac2-4ffe-8fab-2e68c9bab035@proton.me>
Date: Tue, 10 Sep 2024 20:07:40 +0000
From: Benno Lossin <benno.lossin@...ton.me>
To: Danilo Krummrich <dakr@...nel.org>, ojeda@...nel.org, alex.gaynor@...il.com, wedsonaf@...il.com, boqun.feng@...il.com, gary@...yguo.net, bjorn3_gh@...tonmail.com, a.hindborg@...sung.com, aliceryhl@...gle.com, akpm@...ux-foundation.org
Cc: 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 v6 13/26] rust: alloc: implement kernel `Vec` type

On 16.08.24 02:10, Danilo Krummrich wrote:
> `Vec` provides a contiguous growable array type (such as `Vec`) with
> contents allocated with the kernel's allocators (e.g. `Kmalloc`,
> `Vmalloc` or `KVmalloc`).
> 
> In contrast to Rust's `Vec` type, the kernel `Vec` type considers the
> kernel's GFP flags for all appropriate functions, always reports
> allocation failures through `Result<_, AllocError>` and remains
> independent from unstable features.
> 
> Signed-off-by: Danilo Krummrich <dakr@...nel.org>
> ---
>  rust/kernel/alloc.rs      |   6 +
>  rust/kernel/alloc/kvec.rs | 629 ++++++++++++++++++++++++++++++++++++++
>  rust/kernel/prelude.rs    |   2 +-
>  3 files changed, 636 insertions(+), 1 deletion(-)
>  create mode 100644 rust/kernel/alloc/kvec.rs

I noticed that you don't have a `pop` or `remove` function implemented,
I think it would be weird to have all the other functions but not those.

---
Cheers,
Benno