linux-kernel - [PATCH v9 3/5] rust: Add missing SAFETY documentation for ARef example

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Message-ID: <20250325-unique-ref-v9-3-e91618c1de26@pm.me>
Date: Tue, 25 Mar 2025 11:57:10 +0000
From: Oliver Mangold <oliver.mangold@...me>
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>, Asahi Lina <lina@...hilina.net>
Cc: rust-for-linux@...r.kernel.org, linux-kernel@...r.kernel.org, Oliver Mangold <oliver.mangold@...me>
Subject: [PATCH v9 3/5] rust: Add missing SAFETY documentation for ARef example

SAFETY comment in rustdoc example was just 'TODO'. Fixed.

Signed-off-by: Oliver Mangold <oliver.mangold@...me>
---
 rust/kernel/types.rs | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/rust/kernel/types.rs b/rust/kernel/types.rs
index c8b78bcad259132808cc38c56b9f2bd525a0b755..db29f7c725e631c11099fa9122901ec2b3f4a039 100644
--- a/rust/kernel/types.rs
+++ b/rust/kernel/types.rs
@@ -492,7 +492,7 @@ pub unsafe fn from_raw(ptr: NonNull<T>) -> Self {
     ///
     /// struct Empty {}
     ///
-    /// # // SAFETY: TODO.
+    /// // SAFETY: We do not free anything.
     /// unsafe impl RefCounted for Empty {
     ///     fn inc_ref(&self) {}
     ///     unsafe fn dec_ref(_obj: NonNull<Self>) {}
@@ -500,7 +500,7 @@ pub unsafe fn from_raw(ptr: NonNull<T>) -> Self {
     ///
     /// let mut data = Empty {};
     /// let ptr = NonNull::<Empty>::new(&mut data).unwrap();
-    /// # // SAFETY: TODO.
+    /// // SAFETY: We keep `data` around longer than the `ARef`.
     /// let data_ref: ARef<Empty> = unsafe { ARef::from_raw(ptr) };
     /// let raw_ptr: NonNull<Empty> = ARef::into_raw(data_ref);
     ///

-- 
2.49.0