--- zzzz-none-000/linux-4.1.38/include/linux/swap.h	2017-01-18 18:48:06.000000000 +0000
+++ bcm63-7582-715/linux-4.1.38/include/linux/swap.h	2020-11-25 10:06:48.000000000 +0000
@@ -339,7 +339,7 @@
 extern int zone_reclaim(struct zone *, gfp_t, unsigned int);
 #else
 #define zone_reclaim_mode 0
-static inline int zone_reclaim(struct zone *z, gfp_t mask, unsigned int order)
+static inline int zone_reclaim(struct zone *z __maybe_unused, gfp_t mask __maybe_unused, unsigned int order __maybe_unused)
 {
 	return 0;
 }
@@ -353,7 +353,7 @@
 #ifdef CONFIG_MEMCG
 extern int mem_cgroup_swappiness(struct mem_cgroup *mem);
 #else
-static inline int mem_cgroup_swappiness(struct mem_cgroup *mem)
+static inline int mem_cgroup_swappiness(struct mem_cgroup *mem __maybe_unused)
 {
 	return vm_swappiness;
 }
@@ -362,10 +362,10 @@
 extern void mem_cgroup_swapout(struct page *page, swp_entry_t entry);
 extern void mem_cgroup_uncharge_swap(swp_entry_t entry);
 #else
-static inline void mem_cgroup_swapout(struct page *page, swp_entry_t entry)
+static inline void mem_cgroup_swapout(struct page *page __maybe_unused, swp_entry_t entry __maybe_unused)
 {
 }
-static inline void mem_cgroup_uncharge_swap(swp_entry_t entry)
+static inline void mem_cgroup_uncharge_swap(swp_entry_t entry __maybe_unused)
 {
 }
 #endif