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/kern/vfs_subr.c b/sys/kern/vfs_subr.c
index 958bd71..08b65bc 100644
--- a/sys/kern/vfs_subr.c
+++ b/sys/kern/vfs_subr.c
@@ -36,7 +36,7 @@
  * SUCH DAMAGE.
  *
  *	@(#)vfs_subr.c	8.31 (Berkeley) 5/26/95
- * $Id: vfs_subr.c,v 1.127 1998/01/31 01:17:58 tegge Exp $
+ * $Id: vfs_subr.c,v 1.128 1998/02/04 22:32:40 eivind Exp $
  */
 
 /*
@@ -1170,6 +1170,7 @@ vclean(vp, flags, p)
 	struct proc *p;
 {
 	int active;
+	vm_object_t obj;
 
 	/*
 	 * Check to see if the vnode is in use. If so we have to reference it
@@ -1199,18 +1200,18 @@ vclean(vp, flags, p)
 	 * Clean out any buffers associated with the vnode.
 	 */
 	vinvalbuf(vp, V_SAVE, NOCRED, p, 0, 0);
-	if (vp->v_object) {
-		if (vp->v_object->ref_count == 0) {
+	if (obj = vp->v_object) {
+		if (obj->ref_count == 0) {
 			/*
 			 * This is a normal way of shutting down the object/vnode
 			 * association.
 			 */
-			vm_object_terminate(vp->v_object);
+			vm_object_terminate(obj);
 		} else {
 			/*
 			 * Woe to the process that tries to page now :-).
 			 */
-			vm_pager_deallocate(vp->v_object);
+			vm_pager_deallocate(obj);
 		}
 	}