[PATCH v12 12/15] rust: sync: Expose lock::Backend

[Lyude Paul]

Due to the addition of sync::lock::Backend::Context, lock guards can be
returned with a different Backend than their respective lock. Since we'll
be adding a trait bound for Backend to GlobalGuard in order to support
this, users will need to be able to directly refer to Backend so that they
can use it in trait bounds.

So, let's make this easier for users and expose Backend in sync.

Signed-off-by: Lyude Paul <lyude@xxxxxxxxxx>
---
 rust/kernel/sync.rs | 1 +
 1 file changed, 1 insertion(+)

diff --git a/rust/kernel/sync.rs b/rust/kernel/sync.rs
index f1e448e096ea9..ebf004193bca5 100644
--- a/rust/kernel/sync.rs
+++ b/rust/kernel/sync.rs
@@ -25,6 +25,7 @@
 pub use lock::spinlock::{
     new_spinlock, new_spinlock_irq, SpinLock, SpinLockGuard, SpinLockIrq, SpinLockIrqGuard,
 };
+pub use lock::Backend;
 pub use locked_by::LockedBy;
 
 /// Represents a lockdep class. It's a wrapper around C's `lock_class_key`.
-- 
2.50.0