diff options
Diffstat (limited to 'sql/sql_reload.cc')
| -rw-r--r-- | sql/sql_reload.cc | 20 |
1 files changed, 17 insertions, 3 deletions
diff --git a/sql/sql_reload.cc b/sql/sql_reload.cc index 0810459cb49..a09aa5511bd 100644 --- a/sql/sql_reload.cc +++ b/sql/sql_reload.cc @@ -1,4 +1,4 @@ -/* Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved. +/* Copyright (c) 2010, 2011, Oracle and/or its affiliates. All rights reserved. This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by @@ -220,12 +220,26 @@ bool reload_acl_and_cache(THD *thd, unsigned long options, if (tables) { for (TABLE_LIST *t= tables; t; t= t->next_local) - if (!find_table_for_mdl_upgrade(thd->open_tables, t->db, - t->table_name, FALSE)) + if (!find_table_for_mdl_upgrade(thd, t->db, t->table_name, false)) return 1; } else { + /* + It is not safe to upgrade the metadata lock without GLOBAL IX lock. + This can happen with FLUSH TABLES <list> WITH READ LOCK as we in these + cases don't take a GLOBAL IX lock in order to be compatible with + global read lock. + */ + if (thd->open_tables && + !thd->mdl_context.is_lock_owner(MDL_key::GLOBAL, "", "", + MDL_INTENTION_EXCLUSIVE)) + { + my_error(ER_TABLE_NOT_LOCKED_FOR_WRITE, MYF(0), + thd->open_tables->s->table_name.str); + return true; + } + for (TABLE *tab= thd->open_tables; tab; tab= tab->next) { if (! tab->mdl_ticket->is_upgradable_or_exclusive()) |