linux-kernel - [PATCH v1 1/3] rust: make `allocator::aligned

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Message-ID: <20250720094838.29530-2-work@onurozkan.dev>
Date: Sun, 20 Jul 2025 12:48:36 +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 1/3] rust: make `allocator::aligned_size` a `const fn`

Makes `allocator::aligned_size` a `const fn` to allow
compile-time evaluation.

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

diff --git a/rust/kernel/alloc/allocator.rs b/rust/kernel/alloc/allocator.rs
index aa2dfa9dca4c..aa2957fd585b 100644
--- a/rust/kernel/alloc/allocator.rs
+++ b/rust/kernel/alloc/allocator.rs
@@ -44,7 +44,7 @@
 pub struct KVmalloc;

 /// Returns a proper size to alloc a new object aligned to `new_layout`'s alignment.
-fn aligned_size(new_layout: Layout) -> usize {
+const fn aligned_size(new_layout: Layout) -> usize {
     // Customized layouts from `Layout::from_size_align()` can have size < align, so pad first.
     let layout = new_layout.pad_to_align();

--
2.50.0