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-rw-r--r--src/backend/access/nbtree/nbtinsert.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/src/backend/access/nbtree/nbtinsert.c b/src/backend/access/nbtree/nbtinsert.c
index 8246ab4f18d..1c1d4a4bc92 100644
--- a/src/backend/access/nbtree/nbtinsert.c
+++ b/src/backend/access/nbtree/nbtinsert.c
@@ -1703,6 +1703,9 @@ _bt_split(Relation rel, BTScanInsert itup_key, Buffer buf, Buffer cbuf,
* Finish off remaining leftpage special area fields. They cannot be set
* before both origpage (leftpage) and rightpage buffers are acquired and
* locked.
+ *
+ * btpo_cycleid is only used with leaf pages, though we set it here in all
+ * cases just to be consistent.
*/
lopaque->btpo_next = rightpagenumber;
lopaque->btpo_cycleid = _bt_vacuum_cycleid(rel);