diff --git a/src/backend/access/gin/ginfast.c b/src/backend/access/gin/ginfast.c
index 7409fdc165..1af9a69abb 100644
--- a/src/backend/access/gin/ginfast.c
+++ b/src/backend/access/gin/ginfast.c
@@ -791,20 +791,29 @@ ginInsertCleanup(GinState *ginstate, bool full_clean,
 	bool		fsm_vac = false;
 	Size		workMemory;
 
-	/*
+	/*r
 	 * We would like to prevent concurrent cleanup process. For that we will
 	 * lock metapage in exclusive mode using LockPage() call. Nobody other
 	 * will use that lock for metapage, so we keep possibility of concurrent
 	 * insertion into pending list
 	 */
 
+	/*
+	 * we use ShareUpdateExclusive lock on this relation to hold-off concurrent
+	 * cleanup
+	 */
+	Assert(!CheckRelationLockedByMe(index, ShareUpdateExclusiveLock, false));
+
+	/* tentative debug-purpose assertion for stronger locks */
+	Assert(!CheckRelationLockedByMe(index, ShareLock, true));
+	
 	if (forceCleanup)
 	{
 		/*
 		 * We are called from [auto]vacuum/analyze or gin_clean_pending_list()
 		 * and we would like to wait concurrent cleanup to finish.
 		 */
-		LockPage(index, GIN_METAPAGE_BLKNO, ExclusiveLock);
+		LockRelation(index, ShareUpdateExclusiveLock);
 		workMemory =
 			(IsAutoVacuumWorkerProcess() && autovacuum_work_mem != -1) ?
 			autovacuum_work_mem : maintenance_work_mem;
@@ -816,7 +825,7 @@ ginInsertCleanup(GinState *ginstate, bool full_clean,
 		 * just exit in hope that concurrent process will clean up pending
 		 * list.
 		 */
-		if (!ConditionalLockPage(index, GIN_METAPAGE_BLKNO, ExclusiveLock))
+		if (!ConditionalLockRelation(index, ShareUpdateExclusiveLock))
 			return;
 		workMemory = work_mem;
 	}
@@ -830,7 +839,7 @@ ginInsertCleanup(GinState *ginstate, bool full_clean,
 	{
 		/* Nothing to do */
 		UnlockReleaseBuffer(metabuffer);
-		UnlockPage(index, GIN_METAPAGE_BLKNO, ExclusiveLock);
+		UnlockRelation(index, ShareUpdateExclusiveLock);
 		return;
 	}
 
@@ -1002,7 +1011,7 @@ ginInsertCleanup(GinState *ginstate, bool full_clean,
 		page = BufferGetPage(buffer);
 	}
 
-	UnlockPage(index, GIN_METAPAGE_BLKNO, ExclusiveLock);
+	UnlockRelation(index, ShareUpdateExclusiveLock);
 	ReleaseBuffer(metabuffer);
 
 	/*