Fix outdated comment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 cc837ea087efbe744c0a90aee46e1d17d3cd4589..29cfcd90ba6df968a112e145029689c6c4f40f3e 100644 (file)
--- 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.