*** pgsql/src/backend/commands/vacuumlazy.c	2007/09/24 03:53:02	1.81.2.4
--- pgsql/src/backend/commands/vacuumlazy.c	2009/01/06 14:55:50	1.81.2.5
***************
*** 38,44 ****
   *
   *
   * IDENTIFICATION
!  *	  $PostgreSQL: pgsql/src/backend/commands/vacuumlazy.c,v 1.81.2.3 2007/09/16 02:37:54 tgl Exp $
   *
   *-------------------------------------------------------------------------
   */
--- 38,44 ----
   *
   *
   * IDENTIFICATION
!  *	  $PostgreSQL: pgsql/src/backend/commands/vacuumlazy.c,v 1.81.2.4 2007/09/24 03:53:02 alvherre Exp $
   *
   *-------------------------------------------------------------------------
   */
*************** lazy_vacuum_rel(Relation onerel, VacuumS
*** 181,188 ****
  	 * number of pages.  Otherwise, the time taken isn't worth it.
  	 */
  	possibly_freeable = vacrelstats->rel_pages - vacrelstats->nonempty_pages;
! 	if (possibly_freeable >= REL_TRUNCATE_MINIMUM ||
! 		possibly_freeable >= vacrelstats->rel_pages / REL_TRUNCATE_FRACTION)
  		lazy_truncate_heap(onerel, vacrelstats);
  
  	/* Update shared free space map with final free space info */
--- 181,189 ----
  	 * number of pages.  Otherwise, the time taken isn't worth it.
  	 */
  	possibly_freeable = vacrelstats->rel_pages - vacrelstats->nonempty_pages;
! 	if (possibly_freeable > 0 &&
! 		(possibly_freeable >= REL_TRUNCATE_MINIMUM ||
! 		 possibly_freeable >= vacrelstats->rel_pages / REL_TRUNCATE_FRACTION))
  		lazy_truncate_heap(onerel, vacrelstats);
  
  	/* Update shared free space map with final free space info */