*** pgsql/src/include/utils/rel.h	2010/02/04 00:09:14	1.121
--- pgsql/src/include/utils/rel.h	2010/02/07 20:48:13	1.122
***************
*** 7,13 ****
   * Portions Copyright (c) 1996-2010, PostgreSQL Global Development Group
   * Portions Copyright (c) 1994, Regents of the University of California
   *
!  * $PostgreSQL: pgsql/src/include/utils/rel.h,v 1.120 2010/01/17 22:56:23 tgl Exp $
   *
   *-------------------------------------------------------------------------
   */
--- 7,13 ----
   * Portions Copyright (c) 1996-2010, PostgreSQL Global Development Group
   * Portions Copyright (c) 1994, Regents of the University of California
   *
!  * $PostgreSQL: pgsql/src/include/utils/rel.h,v 1.121 2010/02/04 00:09:14 tgl Exp $
   *
   *-------------------------------------------------------------------------
   */
*************** typedef struct StdRdOptions
*** 340,345 ****
--- 340,355 ----
  	((relation)->rd_rel->relnamespace)
  
  /*
+  * RelationIsMapped
+  *		True if the relation uses the relfilenode map.
+  *
+  * NB: this is only meaningful for relkinds that have storage, else it
+  * will misleadingly say "true".
+  */
+ #define RelationIsMapped(relation) \
+ 	((relation)->rd_rel->relfilenode == InvalidOid)
+ 
+ /*
   * RelationOpenSmgr
   *		Open the relation at the smgr level, if not already done.
   */