linux-kernel - [PATCH v1 2/3] rust: make `ArrayLayout::new

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Message-ID: <20250720094838.29530-3-work@onurozkan.dev>
Date: Sun, 20 Jul 2025 12:48:37 +0300
From: Onur Özkan <work@...rozkan.dev>
To: rust-for-linux@...r.kernel.org
Cc: dakr@...nel.org,
	ojeda@...nel.org,
	alex.gaynor@...il.com,
	boqun.feng@...il.com,
	gary@...yguo.net,
	bjorn3_gh@...tonmail.com,
	lossin@...nel.org,
	a.hindborg@...nel.org,
	aliceryhl@...gle.com,
	tmgross@...ch.edu,
	linux-kernel@...r.kernel.org,
	Onur Özkan <work@...rozkan.dev>
Subject: [PATCH v1 2/3] rust: make `ArrayLayout::new_unchecked` a `const fn`

Makes `ArrayLayout::new_unchecked` a `const fn` to allow
compile-time evaluation.

Signed-off-by: Onur Özkan <work@...rozkan.dev>
---
 rust/kernel/alloc/layout.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/rust/kernel/alloc/layout.rs b/rust/kernel/alloc/layout.rs
index 93ed514f7cc7..52cbf61c4539 100644
--- a/rust/kernel/alloc/layout.rs
+++ b/rust/kernel/alloc/layout.rs
@@ -80,7 +80,7 @@ pub const fn new(len: usize) -> Result<Self, LayoutError> {
     /// # Safety
     ///
     /// `len` must be a value, for which `len * size_of::<T>() <= isize::MAX` is true.
-    pub unsafe fn new_unchecked(len: usize) -> Self {
+    pub const unsafe fn new_unchecked(len: usize) -> Self {
         // INVARIANT: By the safety requirements of this function
         // `len * size_of::<T>() <= isize::MAX`.
         Self {
--
2.50.0