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, 3 insertions, 2 deletions

diff --git a/sys/kern/kern_subr.c b/sys/kern/kern_subr.c
index d762ac4..7037a2d 100644
--- a/sys/kern/kern_subr.c
+++ b/sys/kern/kern_subr.c
@@ -36,7 +36,7 @@
  * SUCH DAMAGE.
  *
  *	@(#)kern_subr.c	8.3 (Berkeley) 1/21/94
- * $Id: kern_subr.c,v 1.16 1998/01/22 17:29:49 dyson Exp $
+ * $Id: kern_subr.c,v 1.17 1998/02/04 22:32:34 eivind Exp $
  */
 
 #include "opt_diagnostic.h"
@@ -193,8 +193,9 @@ uioread(n, uio, obj, nread)
 	int error;
 
 	*nread = 0;
-	if (vfs_ioopt > 1)
+	if (vfs_ioopt < 2)
 		return 0;
+
 	error = 0;
 
 	while (n > 0 && uio->uio_resid) {