+ /* we've kicked the IO a few times, if anything has been freed,
+ * exit. There is no sense in looping here for a long time
+ * when we really need to commit the transaction, or there are
+ * just too many writers without enough free space
+ */
+
+ if (loops > 3) {
+ smp_mb();
+ if (progress != space_info->reservation_progress)
+ break;
+ }