From: Peter Eisentraut <peter_e@gmx.net>
Date: Wed, 23 Aug 2017 18:19:35 +0000 (-0400)
Subject: Fix outdated comment
X-Git-Tag: REL9_6_5~4
X-Git-Url: http://git.postgresql.org/gitweb/?a=commitdiff_plain;h=0cd9071130832d051048e051c00d93819436800c;p=postgresql.git

Fix outdated comment

Author: Thomas Munro <thomas.munro@enterprisedb.com>
---

diff --git a/src/backend/storage/lmgr/predicate.c b/src/backend/storage/lmgr/predicate.c
index cc837ea087e..29cfcd90ba6 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.