dict0dict.ic Remove acquisition of the dictionary mutex: this may fix the hang...

dict0dict.ic	Remove acquisition of the dictionary mutex: this may fix the hang observed by Peter Zaitsev
os0file.c	Use O_SYNC instead of O_DSYNC because in Linux there may be a bug

innobase/include/dict0dict.ic

@@ -652,8 +652,6 @@ dict_table_get_index(
 {
 	dict_index_t*	index	= NULL;
 	
-	mutex_enter(&(dict_sys->mutex));
-	
 	index = dict_table_get_first_index(table);
 
 	while (index != NULL) {
@@ -665,8 +663,6 @@ dict_table_get_index(
 		index = dict_table_get_next_index(index);
 	}	
 	
-	mutex_exit(&(dict_sys->mutex));
-
 	return(index);
 }
 

innobase/os/os0file.c

@@ -347,9 +347,12 @@ try_again:
 
 	UT_NOT_USED(purpose);
 
-#ifdef O_DSYNC
+	/* Currently use only O_SYNC because there may be a bug in
+	   Linux O_DSYNC! */
+
+#ifdef O_SYNC
 	if (srv_unix_file_flush_method == SRV_UNIX_O_DSYNC) {
-	        create_flag = create_flag | O_DSYNC;
+	        create_flag = create_flag | O_SYNC;
 	}
 #endif
 	if (create_mode == OS_FILE_CREATE) {