--- /tmp/mysql-5.1.48/storage/innodb_plugin/fil/fil0fil.c       2010-06-03 23:50:08.000000000 +0800
+++ storage/innodb_plugin/fil/fil0fil.c 2011-08-11 00:23:31.000000000 +0800
@@ -938,8 +938,24 @@

                mutex_exit(&fil_system->mutex);

+
+#ifndef UNIV_HOTBACKUP
+                /* Wake the i/o-handler threads to make sure pending i/o's are
+                   performed */
+                os_aio_simulated_wake_handler_threads();
+
                os_thread_sleep(20000);

+               /* Flush tablespaces so that we can close modified files in the LRU
+                   list */
+
+                fil_flush_file_spaces(FIL_TABLESPACE);
+#else
+
+               os_thread_sleep(20000);
+#endif
+
+
                count2++;

                goto retry;
@@ -2457,6 +2473,11 @@
                fputs(" to ", stderr);
                ut_print_filename(stderr, new_name);
                fprintf(stderr, ", %lu iterations\n", (ulong) count);
+               if (node)
+                       fprintf(stderr, "node info: n_pending=%lu, n_pending_flushes=%lu"
+                                  "          modification_counter=%lu, flush_counter=%lu\n",
+                                node->n_pending, node->n_pending_flushes, node->modification_counter,
+                                node->flush_counter);
        }

        mutex_enter(&fil_system->mutex);