--- mm/memory.c	2015-09-04 15:24:20.000000000 +0800
+++ mm/memory.c	2021-07-06 14:21:45.000000000 +0800
@@ -370,6 +370,9 @@
 	unsigned long page;
 	int block,i;
 
+	if (current->pid > 5)
+		printk(" --do_no_page: address=%x, pid=%d\n", address, current->pid);
+		
 	address &= 0xfffff000;
 	tmp = address - current->start_code;
 	if (!current->executable || tmp >= current->end_data) {