1 files changed, 7 insertions, 0 deletions
diff --git a/rust/kernel/sync/arc.rs b/rust/kernel/sync/arc.rs
index e351c701c166..3cefda7a4372 100644
--- a/rust/kernel/sync/arc.rs
+++ b/rust/kernel/sync/arc.rs
@@ -344,6 +344,7 @@ impl<T: ?Sized> Arc<T> {
 
 impl<T: 'static> ForeignOwnable for Arc<T> {
     type Borrowed<'a> = ArcBorrow<'a, T>;
+    type BorrowedMut<'a> = Self::Borrowed<'a>;
 
     fn into_foreign(self) -> *mut crate::ffi::c_void {
         ManuallyDrop::new(self).ptr.as_ptr().cast()
@@ -369,6 +370,12 @@ impl<T: 'static> ForeignOwnable for Arc<T> {
         // for the lifetime of the returned value.
         unsafe { ArcBorrow::new(inner) }
     }
+
+    unsafe fn borrow_mut<'a>(ptr: *mut crate::ffi::c_void) -> ArcBorrow<'a, T> {
+        // SAFETY: The safety requirements for `borrow_mut` are a superset of the safety
+        // requirements for `borrow`.
+        unsafe { Self::borrow(ptr) }
+    }
 }
 
 impl<T: ?Sized> Deref for Arc<T> {