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, 4 insertions, 6 deletions

diff --git a/sys/vm/vm_kern.c b/sys/vm/vm_kern.c
index 120a245..794d560 100644
--- a/sys/vm/vm_kern.c
+++ b/sys/vm/vm_kern.c
@@ -61,7 +61,7 @@
  * any improvements or extensions that they make and grant Carnegie the
  * rights to redistribute these changes.
  *
- * $Id: vm_kern.c,v 1.41 1998/01/31 11:56:35 dyson Exp $
+ * $Id: vm_kern.c,v 1.42 1998/02/04 22:33:45 eivind Exp $
  */
 
 /*
@@ -180,10 +180,8 @@ kmem_alloc(map, size)
 	for (i = 0; i < size; i += PAGE_SIZE) {
 		vm_page_t mem;
 
-		while ((mem = vm_page_alloc(kernel_object,
-			OFF_TO_IDX(offset + i), VM_ALLOC_ZERO)) == NULL) {
-			VM_WAIT;
-		}
+		mem = vm_page_grab(kernel_object, OFF_TO_IDX(offset + i),
+				VM_ALLOC_ZERO | VM_ALLOC_RETRY);
 		if ((mem->flags & PG_ZERO) == 0)
 			vm_page_zero_fill(mem);
 		mem->flags &= ~(PG_BUSY|PG_ZERO);
@@ -365,7 +363,7 @@ retry:
 		PAGE_WAKEUP(m);
 		pmap_enter(kernel_pmap, addr + i, VM_PAGE_TO_PHYS(m),
 			VM_PROT_ALL, 1);
-		m->flags |= PG_MAPPED|PG_WRITEABLE;
+		m->flags |= PG_MAPPED | PG_WRITEABLE | PG_REFERENCED;
 	}
 	vm_map_unlock(map);