+ int ret = 0;
+
+ if (td->io_ops->init) {
+ ret = td->io_ops->init(td);
+ if (ret && td->o.iodepth > 1)
+ log_err("fio: io engine init failed. Perhaps try reducing io dpeth?\n");
+ }
+
+ return ret;
+}
+
+int td_io_commit(struct thread_data *td)
+{
+ if (!td->cur_depth)
+ return 0;
+
+ td->io_u_queued = 0;
+ if (td->io_ops->commit)
+ return td->io_ops->commit(td);
+
+ return 0;
+}
+
+int td_io_open_file(struct thread_data *td, struct fio_file *f)
+{
+ if (td->io_ops->open_file(td, f))
+ return 1;
+
+ f->last_free_lookup = 0;
+ f->last_completed_pos = 0;
+ f->last_pos = 0;
+ f->flags |= FIO_FILE_OPEN;
+ f->flags &= ~FIO_FILE_CLOSING;
+
+ if (f->file_map)
+ memset(f->file_map, 0, f->num_maps * sizeof(long));