Fix inconsistent LWLock tranche names for MultiXact*

michaelpq · michaelpq · commit 4fcbe06aa8f8 · 2025-07-17T09:32:49.000+09:00
The terms used in wait_event_names.txt and lwlock.c were inconsistent for MultiXactOffsetSLRU and MultiXactMemberSLRU, which could cause joins between pg_wait_events and pg_stat_activity to fail. lwlock.c is adjusted in this commit to what the historical name of the event has always been, and what is documented. Oversight in 53c2a97. 08b9b9e has fixed a similar inconsistency some time ago. Author: Bertrand Drouvot <bertranddrouvot.pg@gmail.com> Reviewed-by: Álvaro Herrera <alvherre@kurilemu.de> Discussion: https://postgr.es/m/aHdxN0D0hKXzHFQG@ip-10-97-1-34.eu-west-3.compute.internal Backpatch-through: 17
diff --git a/src/backend/storage/lmgr/lwlock.c b/src/backend/storage/lmgr/lwlock.c
@@ -170,8 +170,8 @@ static const char *const BuiltinTrancheNames[] = {
 	[LWTRANCHE_DSM_REGISTRY_DSA] = "DSMRegistryDSA",
 	[LWTRANCHE_DSM_REGISTRY_HASH] = "DSMRegistryHash",
 	[LWTRANCHE_COMMITTS_SLRU] = "CommitTsSLRU",
-	[LWTRANCHE_MULTIXACTOFFSET_SLRU] = "MultixactOffsetSLRU",
-	[LWTRANCHE_MULTIXACTMEMBER_SLRU] = "MultixactMemberSLRU",
+	[LWTRANCHE_MULTIXACTOFFSET_SLRU] = "MultiXactOffsetSLRU",
+	[LWTRANCHE_MULTIXACTMEMBER_SLRU] = "MultiXactMemberSLRU",
 	[LWTRANCHE_NOTIFY_SLRU] = "NotifySLRU",
 	[LWTRANCHE_SERIAL_SLRU] = "SerialSLRU",
 	[LWTRANCHE_SUBTRANS_SLRU] = "SubtransSLRU",
