Update call sites in the mm subsystem to import `ARef` and
`AlwaysRefCounted` from `sync::aref` instead of `types`.

This aligns with the ongoing effort to move `ARef` and
`AlwaysRefCounted` to sync.

Suggested-by: Benno Lossin <lossin@kernel.org>
Link: https://github.com/Rust-for-Linux/linux/issues/1173
Signed-off-by: Shankari Anand <redacted>
---
It part of a subsystem-wise split series, as suggested in:
https://lore.kernel.org/rust-for-linux/CANiq72=NSRMV_6UxXVgkebmWmbgN4i=sfRszr-G+x3W5A4DYOg@mail.gmail.com/T/#u (local)
This split series is intended to ease review and subsystem-level maintenance.

The original moving patch is here:
https://lore.kernel.org/rust-for-linux/20250625111133.698481-1-shankari.ak0208@gmail.com/ (local)

Gradually the re-export from types.rs will be eliminated in the
future cycle.
---
 rust/kernel/mm.rs             | 3 ++-
 rust/kernel/mm/mmput_async.rs | 2 +-
 2 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/rust/kernel/mm.rs b/rust/kernel/mm.rs
index 43f525c0d16c..4764d7b68f2a 100644
--- a/rust/kernel/mm.rs
+++ b/rust/kernel/mm.rs

@@ -13,7 +13,8 @@
 
 use crate::{
     bindings,
-    types::{ARef, AlwaysRefCounted, NotThreadSafe, Opaque},
+    sync::aref::{ARef, AlwaysRefCounted},
+    types::{NotThreadSafe, Opaque},
 };
 use core::{ops::Deref, ptr::NonNull};
 

diff --git a/rust/kernel/mm/mmput_async.rs b/rust/kernel/mm/mmput_async.rs
index 9289e05f7a67..b8d2f051225c 100644
--- a/rust/kernel/mm/mmput_async.rs
+++ b/rust/kernel/mm/mmput_async.rs

@@ -10,7 +10,7 @@
 use crate::{
     bindings,
     mm::MmWithUser,
-    types::{ARef, AlwaysRefCounted},
+    sync::aref::{ARef, AlwaysRefCounted},
 };
 use core::{ops::Deref, ptr::NonNull};
 

-- 
2.34.1