Implement page fault for lazy loading executables, w/ G

src/filesys/inode.c

@@ -1,6 +1,7 @@
 #include "filesys/inode.h"
 #include <list.h>
 #include <debug.h>
+#include <stdio.h>
 #include <round.h>
 #include <string.h>
 #include "filesys/filesys.h"