linux-kernel - Re: [PATCH v5 7/7] rust: alloc: add Vec::insert_within

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Message-Id: <D9PWJWUM2NDH.37S72IOWP9QI6@kernel.org>
Date: Wed, 07 May 2025 13:46:50 +0200
From: "Benno Lossin" <lossin@...nel.org>
To: "Alice Ryhl" <aliceryhl@...gle.com>, "Danilo Krummrich"
 <dakr@...nel.org>
Cc: "Matthew Maurer" <mmaurer@...gle.com>, <rust-for-linux@...r.kernel.org>,
 <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v5 7/7] rust: alloc: add Vec::insert_within_capacity

On Fri May 2, 2025 at 3:19 PM CEST, Alice Ryhl wrote:
> This adds a variant of Vec::insert that does not allocate memory. This
> makes it safe to use this function while holding a spinlock. Rust Binder
> uses it for the range allocator fast path.
>
> Signed-off-by: Alice Ryhl <aliceryhl@...gle.com>

Reviewed-by: Benno Lossin <lossin@...nel.org>

---
Cheers,
Benno

> ---
>  rust/kernel/alloc/kvec.rs        | 51 +++++++++++++++++++++++++++++++++++++++-
>  rust/kernel/alloc/kvec/errors.rs | 23 ++++++++++++++++++
>  2 files changed, 73 insertions(+), 1 deletion(-)