Restore accidentally-removed line.

Commit 88e66d193fbaf756b3cc9bf94cad116aacbb355b is to blame.

Masahiko Sawada

Discussion: http://postgr.es/m/CAD21AoAXeb7O4hgg+efs8JT_SxpR4doAH5c5s-Z5WoRLstBZJA@mail.gmail.com

diff --git a/src/backend/access/transam/subtrans.c b/src/backend/access/transam/subtrans.c
index cef03f83e03f3be28d02945c152971b1527ab4b1..f6406611301f8f7bdb320665947ee45a264f3c86 100644 (file)
--- a/src/backend/access/transam/subtrans.c
+++ b/src/backend/access/transam/subtrans.c
@@ -10,6 +10,7 @@
  * The tree can easily be walked from child to parent, but not in the
  * opposite direction.
  *
+ * This code is based on xact.c, but the robustness requirements
  * are completely different from pg_xact, because we only need to remember
  * pg_subtrans information for currently-open transactions.  Thus, there is
  * no need to preserve data over a crash and restart.