1) Start using a cleaner and more consistant page allocator instead

	of the various ad-hoc schemes.
2)	When bringing in UPAGES, the pmap code needs to do another vm_page_lookup.
3)	When appropriate, set the PG_A or PG_M bits a-priori to both avoid some
	processor errata, and to minimize redundant processor updating of page
	tables.
4)	Modify pmap_protect so that it can only remove permissions (as it
	originally supported.)  The additional capability is not needed.
5)	Streamline read-only to read-write page mappings.
6)	For pmap_copy_page, don't enable write mapping for source page.
7)	Correct and clean-up pmap_incore.
8)	Cluster initial kern_exec pagin.
9)	Removal of some minor lint from kern_malloc.
10)	Correct some ioopt code.
11)	Remove some dead code from the MI swapout routine.
12)	Correct vm_object_deallocate (to remove backing_object ref.)
13)	Fix dead object handling, that had problems under heavy memory load.
14)	Add minor vm_page_lookup improvements.
15)	Some pages are not in objects, and make sure that the vm_page.c can
	properly support such pages.
16)	Add some more page deficit handling.
17)	Some minor code readability improvements.

1 files changed, 6 insertions, 5 deletions

diff --git a/sys/vm/vm_pageout.c b/sys/vm/vm_pageout.c
index 66e2988..11c4d9f 100644
--- a/sys/vm/vm_pageout.c
+++ b/sys/vm/vm_pageout.c
@@ -65,7 +65,7 @@
  * any improvements or extensions that they make and grant Carnegie the
  * rights to redistribute these changes.
  *
- * $Id: vm_pageout.c,v 1.110 1998/01/31 11:56:49 dyson Exp $
+ * $Id: vm_pageout.c,v 1.111 1998/02/04 22:33:56 eivind Exp $
  */
 
 /*
@@ -369,7 +369,7 @@ vm_pageout_flush(mc, count, sync)
 {
 	register vm_object_t object;
 	int pageout_status[count];
-	int anyok = 0;
+	int numpagedout = 0;
 	int i;
 
 	object = mc[0]->object;
@@ -384,10 +384,10 @@ vm_pageout_flush(mc, count, sync)
 
 		switch (pageout_status[i]) {
 		case VM_PAGER_OK:
-			anyok++;
+			numpagedout++;
 			break;
 		case VM_PAGER_PEND:
-			anyok++;
+			numpagedout++;
 			break;
 		case VM_PAGER_BAD:
 			/*
@@ -423,7 +423,7 @@ vm_pageout_flush(mc, count, sync)
 			PAGE_WAKEUP(mt);
 		}
 	}
-	return anyok;
+	return numpagedout;
 }
 
 #if !defined(NO_SWAPPING)
@@ -644,6 +644,7 @@ vm_pageout_scan()
 
 	pages_freed = 0;
 	addl_page_shortage = vm_pageout_deficit;
+	vm_pageout_deficit = 0;
 
 	if (max_page_launder == 0)
 		max_page_launder = 1;