global read lock code now uses a dedicated mutex

(otherwise a deadlock when ALTER writes to
binlog holding LOCK_open, it causes binlog rotation,
binlog waits for prepared transactions to commit, and commit
needs LOCK_open to check for global read lock)


mysql-test/r/flush.result:
  global read lock code now uses a dedicated mutex
mysql-test/t/flush.test:
  global read lock code now uses a dedicated mutex
sql/lock.cc:
  global read lock code now uses a dedicated mutex
sql/mysql_priv.h:
  global read lock code now uses a dedicated mutex
sql/mysqld.cc:
  global read lock code now uses a dedicated mutex
sql/sql_table.cc:
  global read lock code now uses a dedicated mutex

1 files changed, 1 insertions, 1 deletions

diff --git a/mysql-test/t/flush.test b/mysql-test/t/flush.test
index 9ee6b5d76b8..62af9d4932b 100644
--- a/mysql-test/t/flush.test
+++ b/mysql-test/t/flush.test
@@ -37,7 +37,7 @@ connection con1;
 select * from t1;
 connection con2;
 flush tables with read lock;
---error 1099;
+--error 1223
 drop table t2;
 connection con1;
 send drop table t2;