--- zzzz-none-000/linux-4.4.60/include/linux/mm_types.h	2017-04-08 07:53:53.000000000 +0000
+++ scorpion-7490-727/linux-4.4.60/include/linux/mm_types.h	2021-02-04 17:41:59.000000000 +0000
@@ -238,8 +238,14 @@
 	__u16 size;
 #endif
 };
-
+#if defined(CONFIG_ATH79)
+/**
+ * JZ-83527: 1750E: prevent OOM's by using page-alloc order 1 for netdev_alloc
+ */
+#define PAGE_FRAG_CACHE_MAX_SIZE	__ALIGN_MASK(8192, ~PAGE_MASK)
+#else
 #define PAGE_FRAG_CACHE_MAX_SIZE	__ALIGN_MASK(32768, ~PAGE_MASK)
+#endif
 #define PAGE_FRAG_CACHE_MAX_ORDER	get_order(PAGE_FRAG_CACHE_MAX_SIZE)
 
 struct page_frag_cache {
@@ -368,10 +374,14 @@
 	struct completion startup;
 };
 
+#define AVM_ENH_SWAP_STATS 1
+
 enum {
 	MM_FILEPAGES,
 	MM_ANONPAGES,
 	MM_SWAPENTS,
+	MM_SWAPOUTS,
+	MM_SWAPINS,
 	NR_MM_COUNTERS
 };
 
@@ -392,7 +402,7 @@
 struct mm_struct {
 	struct vm_area_struct *mmap;		/* list of VMAs */
 	struct rb_root mm_rb;
-	u32 vmacache_seqnum;                   /* per-thread vmacache */
+	u64 vmacache_seqnum;                   /* per-thread vmacache */
 #ifdef CONFIG_MMU
 	unsigned long (*get_unmapped_area) (struct file *filp,
 				unsigned long addr, unsigned long len,