Eliminated many redundant vm_map_lookup operations for vm_mmap.

Speed up for vfs_bio -- addition of a routine bqrelse to greatly diminish
	overhead for merged cache.
Efficiency improvement for vfs_cluster.  It used to do alot of redundant
	calls to cluster_rbuild.
Correct the ordering for vrele of .text and release of credentials.
Use the selective tlb update for 486/586/P6.
Numerous fixes to the size of objects allocated for files.  Additionally,
	fixes in the various pagers.
Fixes for proper positioning of vnode_pager_setsize in msdosfs and ext2fs.
Fixes in the swap pager for exhausted resources.  The pageout code
	will not as readily thrash.
Change the page queue flags (PG_ACTIVE, PG_INACTIVE, PG_FREE, PG_CACHE) into
	page queue indices (PQ_ACTIVE, PQ_INACTIVE, PQ_FREE, PQ_CACHE),
	thereby improving efficiency of several routines.
Eliminate even more unnecessary vm_page_protect operations.
Significantly speed up process forks.
Make vm_object_page_clean more efficient, thereby eliminating the pause
	that happens every 30seconds.
Make sequential clustered writes B_ASYNC instead of B_DELWRI even in the
	case of filesystems mounted async.
Fix a panic with busy pages when write clustering is done for non-VMIO
	buffers.

1 files changed, 6 insertions, 6 deletions

diff --git a/sys/kern/sys_process.c b/sys/kern/sys_process.c
index e9a8c50..cf004dc 100644
--- a/sys/kern/sys_process.c
+++ b/sys/kern/sys_process.c
@@ -28,7 +28,7 @@
  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  *
- *	$Id: sys_process.c,v 1.18 1995/12/16 21:43:47 bde Exp $
+ *	$Id: sys_process.c,v 1.19 1995/12/17 06:59:36 bde Exp $
  */
 
 #include <sys/param.h>
@@ -85,8 +85,8 @@ pread (struct proc *procp, unsigned int addr, unsigned int *retval) {
 	vm_map_lookup_done (tmap, out_entry);
 
 	/* Find space in kernel_map for the page we're interested in */
-	rv = vm_map_find (kernel_map, object, IDX_TO_OFF(pindex), &kva,
-			  PAGE_SIZE, 1);
+	rv = vm_map_find (kernel_map, object, IDX_TO_OFF(pindex),
+		&kva, PAGE_SIZE, 0, VM_PROT_ALL, VM_PROT_ALL, 0);
 
 	if (!rv) {
 		vm_object_reference (object);
@@ -175,9 +175,9 @@ pwrite (struct proc *procp, unsigned int addr, unsigned int datum) {
 		return EFAULT;
 
 	/* Find space in kernel_map for the page we're interested in */
-	rv = vm_map_find (kernel_map, object, IDX_TO_OFF(pindex), &kva,
-			  PAGE_SIZE, 1);
-
+	rv = vm_map_find (kernel_map, object, IDX_TO_OFF(pindex),
+		&kva, PAGE_SIZE, 0,
+		VM_PROT_ALL, VM_PROT_ALL, 0);
 	if (!rv) {
 		vm_object_reference (object);