linux-kernel - [PATCH v4 12/16] rust: sync: arc: refactor to use `&raw [const|mut]`

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Message-ID: <20250316061429.817126-13-contact@antoniohickey.com>
Date: Sun, 16 Mar 2025 02:14:21 -0400
From: Antonio Hickey <contact@...e-forge.io>
To: Miguel Ojeda <ojeda@...nel.org>,
	Alex Gaynor <alex.gaynor@...il.com>,
	Boqun Feng <boqun.feng@...il.com>,
	Gary Guo <gary@...yguo.net>,
	Björn Roy Baron <bjorn3_gh@...tonmail.com>,
	Benno Lossin <benno.lossin@...ton.me>,
	Andreas Hindborg <a.hindborg@...nel.org>,
	Alice Ryhl <aliceryhl@...gle.com>,
	Trevor Gross <tmgross@...ch.edu>,
	Danilo Krummrich <dakr@...nel.org>
Cc: Antonio Hickey <contact@...oniohickey.com>,
	rust-for-linux@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH v4 12/16] rust: sync: arc: refactor to use `&raw [const|mut]`

Replacing all occurrences of `addr_of!(place)` and `addr_of_mut!(place)`
with `&raw const place` and `&raw mut place` respectively.

This will allow us to reduce macro complexity, and improve consistency
with existing reference syntax as `&raw const`, `&raw mut` are similar
to `&`, `&mut` making it fit more naturally with other existing code.

Suggested-by: Benno Lossin <benno.lossin@...ton.me>
Link: https://github.com/Rust-for-Linux/linux/issues/1148
Signed-off-by: Antonio Hickey <contact@...oniohickey.com>
---
 rust/kernel/sync/arc.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/rust/kernel/sync/arc.rs b/rust/kernel/sync/arc.rs
index 3cefda7a4372..81d8b0f84957 100644
--- a/rust/kernel/sync/arc.rs
+++ b/rust/kernel/sync/arc.rs
@@ -243,7 +243,7 @@ pub fn into_raw(self) -> *const T {
         let ptr = self.ptr.as_ptr();
         core::mem::forget(self);
         // SAFETY: The pointer is valid.
-        unsafe { core::ptr::addr_of!((*ptr).data) }
+        unsafe { &raw const (*ptr).data }
     }
 
     /// Recreates an [`Arc`] instance previously deconstructed via [`Arc::into_raw`].
-- 
2.48.1