diff --git a/sys/vm/swap_pager.c b/sys/vm/swap_pager.c
--- a/sys/vm/swap_pager.c
+++ b/sys/vm/swap_pager.c
@@ -2340,10 +2340,6 @@
 };
 #endif
 
-/*
- * MPSAFE
- */
-/* ARGSUSED */
 int
 sys_swapon(struct thread *td, struct swapon_args *uap)
 {
@@ -2489,10 +2485,6 @@
 };
 #endif
 
-/*
- * MPSAFE
- */
-/* ARGSUSED */
 int
 sys_swapoff(struct thread *td, struct swapoff_args *uap)
 {