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-rw-r--r--src/backend/access/nbtree/nbtree.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/src/backend/access/nbtree/nbtree.c b/src/backend/access/nbtree/nbtree.c
index 409a2c12100..992f84834f8 100644
--- a/src/backend/access/nbtree/nbtree.c
+++ b/src/backend/access/nbtree/nbtree.c
@@ -970,6 +970,9 @@ btvacuumscan(IndexVacuumInfo *info, IndexBulkDeleteResult *stats,
* write-lock on the left page before it adds a right page, so we must
* already have processed any tuples due to be moved into such a page.
*
+ * XXX: Now that new pages are locked with RBM_ZERO_AND_LOCK, I don't
+ * think the use of the extension lock is still required.
+ *
* We can skip locking for new or temp relations, however, since no one
* else could be accessing them.
*/