[PATCH 3/9] rust: sync: arc: relax `ForeignOwnable` for `Arc<T>`

[Ke Sun via B4 Relay <devnull+sunke.kylinos.cn@kernel.org>]

From: Alvin Sun <alvin.sun@linux.dev>

Drop the `'static` bound so that refcounted values borrowing from a
driver registration scope can be foreign-owned by the XArray
abstraction.

Signed-off-by: Alvin Sun <alvin.sun@linux.dev>
---
 rust/kernel/sync/arc.rs | 12 +++++++++---
 1 file changed, 9 insertions(+), 3 deletions(-)

diff --git a/rust/kernel/sync/arc.rs b/rust/kernel/sync/arc.rs
index 5ac4961b7cd20..cd6faba84ffcb 100644
--- a/rust/kernel/sync/arc.rs
+++ b/rust/kernel/sync/arc.rs
@@ -363,11 +363,17 @@ pub fn into_unique_or_drop(this: Self) -> Option<Pin<UniqueArc<T>>> {
 
 // SAFETY: The pointer returned by `into_foreign` was originally allocated as an
 // `KBox<ArcInner<T>>`, so that type is what determines the alignment.
-unsafe impl<T: 'static> ForeignOwnable for Arc<T> {
+unsafe impl<T> ForeignOwnable for Arc<T> {
     const FOREIGN_ALIGN: usize = <KBox<ArcInner<T>> as ForeignOwnable>::FOREIGN_ALIGN;
 
-    type Borrowed<'a> = ArcBorrow<'a, T>;
-    type BorrowedMut<'a> = Self::Borrowed<'a>;
+    type Borrowed<'a>
+        = ArcBorrow<'a, T>
+    where
+        T: 'a;
+    type BorrowedMut<'a>
+        = Self::Borrowed<'a>
+    where
+        T: 'a;
 
     fn into_foreign(self) -> *mut c_void {
         ManuallyDrop::new(self).ptr.as_ptr().cast()

-- 
2.43.0