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commit    b3abec0adeb0432a63cc34928fafa62e35efccf7
Author:   Michael Paquier <michael@paquier.xyz>
Date:     Thu Jul 17 00:32:55 2025 +0000
First released in: 17.6, 18.0

    Fix inconsistent LWLock tranche names for MultiXact*
    
    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 53c2a97a9266.  08b9b9e043bb 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


 src/backend/storage/lmgr/lwlock.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/backend/storage/lmgr/lwlock.c b/src/backend/storage/lmgr/lwlock.c
index 5df62fafbfb..11df55c63e5 100644
--- a/src/backend/storage/lmgr/lwlock.c
+++ b/src/backend/storage/lmgr/lwlock.c
@@ -162,8 +162,8 @@ 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",


[parent: b06a335eeb03]