Make sure we flush discarded pages even if the number of hash buckets doesn't

change.  From Pedro Martelletto via bitrig.

ok beck@, krw@

diff --git a/sys/uvm/uvm_aobj.c b/sys/uvm/uvm_aobj.c
index 6249c85..173d469 100644 (file)
--- a/sys/uvm/uvm_aobj.c
+++ b/sys/uvm/uvm_aobj.c
@@ -1,4 +1,4 @@
-/*     $OpenBSD: uvm_aobj.c,v 1.62 2014/04/30 16:07:31 kettenis Exp $  */
+/*     $OpenBSD: uvm_aobj.c,v 1.63 2014/04/30 19:25:14 kettenis Exp $  */
 /*     $NetBSD: uvm_aobj.c,v 1.39 2001/02/18 21:19:08 chs Exp $        */
 
 /*
@@ -442,6 +442,7 @@ uao_shrink_hash(struct uvm_object *uobj, int pages)
         * to adjust the page count.
         */
        if (UAO_SWHASH_BUCKETS(aobj->u_pages) == UAO_SWHASH_BUCKETS(pages)) {
+               uao_shrink_flush(uobj, pages, aobj->u_pages);
                aobj->u_pages = pages;
                return 0;
        }