+/*
+ * Get next file to service by choosing one at random
+ */
+static struct fio_file *get_next_file_rand(struct thread_data *td)
+{
+ long r = os_random_long(&td->next_file_state);
+ unsigned int fileno;
+ struct fio_file *f;
+
+ do {
+ fileno = (unsigned int) ((double) (td->nr_files - 1) * r / (RAND_MAX + 1.0));
+ f = &td->files[fileno];
+ if (f->fd != -1)
+ return f;
+ } while (1);
+}
+
+/*
+ * Get next file to service by doing round robin between all available ones
+ */
+static struct fio_file *get_next_file_rr(struct thread_data *td)