Changed swap partition handling/allocation so that it doesn't

require specific partitions be mentioned in the kernel config
file ("swap on foo" is now obsolete).

From Poul-Henning:

The visible effect is this:

As default, unless
        options "NSWAPDEV=23"
is in your config, you will have four swap-devices.
You can swapon(2) any block device you feel like, it doesn't have
to be in the kernel config.

There is a performance/resource win available by getting the NSWAPDEV right
(but only if you have just one swap-device ??), but using that as default
would be too restrictive.

The invisible effect is that:

Swap-handling disappears from the $arch part of the kernel.
It gets a lot simpler (-145 lines) and cleaner.

Reviewed by:	John Dyson, David Greenman
Submitted by:	Poul-Henning Kamp, with minor changes by me.

1 files changed, 2 insertions, 3 deletions

diff --git a/sys/vm/vm_extern.h b/sys/vm/vm_extern.h
index fb752c1..997f41a 100644
--- a/sys/vm/vm_extern.h
+++ b/sys/vm/vm_extern.h
@@ -31,7 +31,7 @@
  * SUCH DAMAGE.
  *
  *	@(#)vm_extern.h	8.2 (Berkeley) 1/12/94
- * $Id: vm_extern.h,v 1.13 1995/03/16 18:17:08 bde Exp $
+ * $Id: vm_extern.h,v 1.14 1995/05/10 18:56:04 davidg Exp $
  */
 
 #ifndef _VM_EXTERN_H_
@@ -98,10 +98,9 @@ void loadav __P((struct loadavg *));
 void munmapfd __P((struct proc *, int));
 int pager_cache __P((vm_object_t, boolean_t));
 void sched __P((void));
-void swapinit __P((void));
+int swaponvp __P((struct proc *, struct vnode *, dev_t , u_long ));
 void swapout __P((struct proc *));
 void swapout_threads __P((void));
-int swfree __P((struct proc *, int));
 void swstrategy __P((struct buf *));
 void thread_block __P((char *));
 void thread_sleep __P((int, simple_lock_t, boolean_t));