This was changed in PostgreSQL 9.2, but somehow this comment never
got updated.
* During recovery, we keep a copy of the latest checkpoint record here.
* lastCheckPointRecPtr points to start of checkpoint record and
* lastCheckPointEndPtr points to end+1 of checkpoint record. Used by the
- * background writer when it wants to create a restartpoint.
+ * checkpointer when it wants to create a restartpoint.
*
* Protected by info_lck.
*/