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

--- src.orig/mm/mmap.c	2020-09-03 11:48:30.745726898 -0400

+++ src/mm/mmap.c	2020-09-03 11:48:43.078765482 -0400

@@ -1721,6 +1721,9 @@ 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, len >> PAGE_SHIFT)) {

 		unsigned long nr_pages;