Fix comment regarding the meaning of infinity for timeline history entry

Michael Paquier

diff --git a/src/include/access/timeline.h b/src/include/access/timeline.h
index 2b62a56aa0ec4c078cbdc416e53f4c038cae953b..01437c04bc06e61f4afbd88ee5f402da8e720fe6 100644 (file)
--- a/src/include/access/timeline.h
+++ b/src/include/access/timeline.h
@@ -26,7 +26,8 @@ typedef struct
 {
        TimeLineID      tli;
        XLogRecPtr      begin;                  /* inclusive */
-       XLogRecPtr      end;                    /* exclusive, 0 means infinity */
+       XLogRecPtr      end;                    /* exclusive, InvalidXLogRecPtr means
+                                                                * infinity */
 } TimeLineHistoryEntry;
 
 extern List *readTimeLineHistory(TimeLineID targetTLI);