Index: buffer/bufmgr.c
===================================================================
RCS file: /projects/cvsroot/pgsql/src/backend/storage/buffer/bufmgr.c,v
retrieving revision 1.182
diff -d -c -r1.182 bufmgr.c
*** buffer/bufmgr.c	24 Nov 2004 02:56:17 -0000	1.182
--- buffer/bufmgr.c	12 Dec 2004 21:53:10 -0000
***************
*** 688,717 ****
  	if (percent == 0 || maxpages == 0)
  		return 0;
  
  	/*
  	 * Get a list of all currently dirty buffers and how many there are.
  	 * We do not flush buffers that get dirtied after we started. They
  	 * have to wait until the next checkpoint.
  	 */
! 	dirty_buffers = (BufferDesc **) palloc(NBuffers * sizeof(BufferDesc *));
! 	buftags = (BufferTag *) palloc(NBuffers * sizeof(BufferTag));
  
  	LWLockAcquire(BufMgrLock, LW_EXCLUSIVE);
- 	num_buffer_dirty = StrategyDirtyBufferList(dirty_buffers, buftags,
- 											   NBuffers);
  
- 	/*
- 	 * If called by the background writer, we are usually asked to only
- 	 * write out some portion of dirty buffers now, to prevent the IO
- 	 * storm at checkpoint time.
- 	 */
- 	if (percent > 0)
- 	{
- 		Assert(percent <= 100);
- 		num_buffer_dirty = (num_buffer_dirty * percent + 99) / 100;
- 	}
- 	if (maxpages > 0 && num_buffer_dirty > maxpages)
- 		num_buffer_dirty = maxpages;
  
  	/* Make sure we can handle the pin inside the loop */
  	ResourceOwnerEnlargeBuffers(CurrentResourceOwner);
--- 689,720 ----
  	if (percent == 0 || maxpages == 0)
  		return 0;
  
  	/*
  	 * Get a list of all currently dirty buffers and how many there are.
  	 * We do not flush buffers that get dirtied after we started. They
  	 * have to wait until the next checkpoint.
  	 */
! 	dirty_buffers = (BufferDesc **) palloc(maxpages * sizeof(BufferDesc *));
! 	buftags = (BufferTag *) palloc(maxpages * sizeof(BufferTag));
  
  	LWLockAcquire(BufMgrLock, LW_EXCLUSIVE);
  
!    	num_buffer_dirty = StrategyDirtyBufferList(dirty_buffers, buftags,
! 											   maxpages);
  
  	/* Make sure we can handle the pin inside the loop */
  	ResourceOwnerEnlargeBuffers(CurrentResourceOwner);