--- zzzz-none-000/linux-4.4.60/include/linux/mmzone.h	2017-04-08 07:53:53.000000000 +0000
+++ scorpion-7490-727/linux-4.4.60/include/linux/mmzone.h	2021-02-04 17:41:59.000000000 +0000
@@ -157,6 +157,7 @@
 	WORKINGSET_NODERECLAIM,
 	NR_ANON_TRANSPARENT_HUGEPAGES,
 	NR_FREE_CMA_PAGES,
+	NR_INDIRECTLY_RECLAIMABLE_BYTES, /* measured in bytes */
 	NR_VM_ZONE_STAT_ITEMS };
 
 /*
@@ -830,6 +831,8 @@
 struct ctl_table;
 int min_free_kbytes_sysctl_handler(struct ctl_table *, int,
 					void __user *, size_t *, loff_t *);
+int low_free_kbytes_ratio_sysctl_handler(struct ctl_table *, int,
+					void __user *, size_t *, loff_t *);
 extern int sysctl_lowmem_reserve_ratio[MAX_NR_ZONES-1];
 int lowmem_reserve_ratio_sysctl_handler(struct ctl_table *, int,
 					void __user *, size_t *, loff_t *);