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------------------------------------------------------------
revno: 2630.4.18
committer: Dmitry Lenev <dlenev@mysql.com>
branch nick: mysql-6.0-3726-w2
timestamp: Tue 2008-06-03 21:07:58 +0400
message:
  WL#3726 "DDL locking for all metadata objects".

  After review fixes in progress.

  Now during upgrading/downgrading metadata locks we deal with
  individual metadata lock requests rather than with all requests
  for this object in the context. This makes API a bit more clear
  and makes adjust_mdl_locks_upgradability() much nicer.
This commit is contained in:
Konstantin Osipov
2009-12-01 01:39:13 +03:00
parent a9dbad1afd
commit 4689cddb23
7 changed files with 221 additions and 202 deletions
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5
sql/sql_trigger.cc
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@ -527,8 +527,9 @@ end:
locks. Otherwise call to close_thread_tables() will take care about both
TABLE instance created by reopen_name_locked_table() and meta-data lock.
*/
if (thd->locked_tables)
mdl_downgrade_exclusive_locks(&thd->mdl_context);
if (thd->locked_tables && tables && tables->table)
mdl_downgrade_exclusive_lock(&thd->mdl_context,
tables->table->mdl_lock_data);
if (need_start_waiting)
start_waiting_global_read_lock(thd);