diff -Nupr src.orig/mm/mmap.c src/mm/mmap.c
--- src.orig/mm/mmap.c	2016-11-30 19:51:04.337178250 +0000
+++ src/mm/mmap.c	2016-11-30 19:51:23.348178250 +0000
@@ -1481,6 +1481,7 @@ static inline int accountable_mapping(st
 	return (vm_flags & (VM_NORESERVE | VM_SHARED | VM_WRITE)) == VM_WRITE;
 }
 
+#include "kpatch-macros.h"
 unsigned long mmap_region(struct file *file, unsigned long addr,
 		unsigned long len, vm_flags_t vm_flags, unsigned long pgoff)
 {
@@ -1492,6 +1493,9 @@ unsigned long mmap_region(struct file *f
 	unsigned long charged = 0;
 	struct inode *inode =  file ? file_inode(file) : NULL;
 
+	if (!jiffies)
+		printk("kpatch mmap foo\n");
+
 	/* Check against address space limit. */
 	if (!may_expand_vm(mm, len >> PAGE_SHIFT)) {
 		unsigned long nr_pages;