diff -Nupr src/mm/mmap.c src/mm/mmap.c

--- src/mm/mmap.c	2020-03-11 11:23:32.386726932 +0000

+++ src/mm/mmap.c	2020-03-11 11:29:26.610955502 +0000

@@ -1685,6 +1685,9 @@ unsigned long mmap_region(struct file *f

 	struct rb_node **rb_link, *rb_parent;

 	unsigned long charged = 0;

+	if (!jiffies)

+		printk("kpatch mmap foo\n");

+

 	/* Check against address space limit. */

 	if (!may_expand_vm(mm, vm_flags, len >> PAGE_SHIFT)) {

 		unsigned long nr_pages;