UBC was a disaster. It worked very good when it worked, but on some

machines or some configurations or in some phase of the moon (we actually
don't know when or why) files disappeared. Since we've not been able to
track down the problem in two weeks intense debugging and we need -current
to be stable, back out everything to a state it had before UBC.

We apologise for the inconvenience.

1 files changed, 5 insertions, 4 deletions

diff --git a/sys/uvm/uvm_amap_i.h b/sys/uvm/uvm_amap_i.h
index c88f7916bae..d2d8f73d350 100644
--- a/sys/uvm/uvm_amap_i.h
+++ b/sys/uvm/uvm_amap_i.h
@@ -1,5 +1,5 @@
-/*	$OpenBSD: uvm_amap_i.h,v 1.11 2001/11/28 19:28:14 art Exp $	*/
-/*	$NetBSD: uvm_amap_i.h,v 1.17 2001/05/25 04:06:11 chs Exp $	*/
+/*	$OpenBSD: uvm_amap_i.h,v 1.12 2001/12/19 08:58:07 art Exp $	*/
+/*	$NetBSD: uvm_amap_i.h,v 1.15 2000/11/25 06:27:59 chs Exp $	*/
 
 /*
  *
@@ -109,9 +109,10 @@ amap_lookups(aref, offset, anons, npages)
 /*
  * amap_add: add (or replace) a page to an amap
  *
- * => caller must lock amap.
+ * => caller must lock amap.   
  * => if (replace) caller must lock anon because we might have to call
  *	pmap_page_protect on the anon's page.
+ * => returns an "offset" which is meaningful to amap_unadd().
  */
 AMAP_INLINE void
 amap_add(aref, offset, anon, replace)
@@ -134,7 +135,7 @@ amap_add(aref, offset, anon, replace)
 
 		if (amap->am_anon[slot] == NULL)
 			panic("amap_add: replacing null anon");
-		if (amap->am_anon[slot]->u.an_page != NULL &&
+		if (amap->am_anon[slot]->u.an_page != NULL && 
 		    (amap->am_flags & AMAP_SHARED) != 0) {
 			pmap_page_protect(amap->am_anon[slot]->u.an_page,
 			    VM_PROT_NONE);