postgres.git / summary / log / commit / refs

commit    da19c32c6b7dd7d0ff5814538adf5aaa665848a1
Author:   Peter Eisentraut <peter_e@gmx.net>
Date:     Wed Aug 23 18:19:35 2017 +0000

    Fix outdated comment
    
    Author: Thomas Munro <thomas.munro@enterprisedb.com>


 src/backend/storage/lmgr/predicate.c | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/src/backend/storage/lmgr/predicate.c b/src/backend/storage/lmgr/predicate.c
index 74e4b35837b..6a6d9d6d5cc 100644
--- a/src/backend/storage/lmgr/predicate.c
+++ b/src/backend/storage/lmgr/predicate.c
@@ -116,10 +116,12 @@
  *			than its own active transaction must acquire an exclusive
  *			lock.
  *
- *	FirstPredicateLockMgrLock based partition locks
+ *	PredicateLockHashPartitionLock(hashcode)
  *		- The same lock protects a target, all locks on that target, and
- *			the linked list of locks on the target..
- *		- When more than one is needed, acquire in ascending order.
+ *			the linked list of locks on the target.
+ *		- When more than one is needed, acquire in ascending address order.
+ *		- When all are needed (rare), acquire in ascending index order with
+ *			PredicateLockHashPartitionLockByIndex(index).
  *
  *	SerializableXactHashLock
  *		- Protects both PredXact and SerializableXidHash.


[parent: 8bf94694691d]