extern void options_mem_dupe(void *data, struct fio_option *options);
extern void td_fill_rand_seeds(struct thread_data *);
extern void add_job_opts(const char **, int);
-extern char *num2str(unsigned long, int, int, int);
+extern char *num2str(unsigned long, int, int, int, int);
extern int ioengine_load(struct thread_data *);
extern unsigned long page_mask;