linux-kernel - [PATCH v4 14/16] rust: fs: file: refactor to use `&raw [const|mut]`

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Message-ID: <20250316061429.817126-15-contact@antoniohickey.com>
Date: Sun, 16 Mar 2025 02:14:23 -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 14/16] rust: fs: file: 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/fs/file.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/rust/kernel/fs/file.rs b/rust/kernel/fs/file.rs
index ed57e0137cdb..7ee4830b67f3 100644
--- a/rust/kernel/fs/file.rs
+++ b/rust/kernel/fs/file.rs
@@ -331,7 +331,7 @@ pub fn flags(&self) -> u32 {
         // SAFETY: The file is valid because the shared reference guarantees a nonzero refcount.
         //
         // FIXME(read_once): Replace with `read_once` when available on the Rust side.
-        unsafe { core::ptr::addr_of!((*self.as_ptr()).f_flags).read_volatile() }
+        unsafe { (&raw const (*self.as_ptr()).f_flags).read_volatile() }
     }
 }
 
-- 
2.48.1