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From: Alan Cox <alc@FreeBSD.org>
Date: Thu, 19 Jul 2012 05:34:19 +0000 (UTC)
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Subject: svn commit: r238610 - head/sys/amd64/amd64
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Author: alc
Date: Thu Jul 19 05:34:19 2012
New Revision: 238610
URL: http://svn.freebsd.org/changeset/base/238610

Log:
  Don't unnecessarily set PGA_REFERENCED in pmap_enter().

Modified:
  head/sys/amd64/amd64/pmap.c

Modified: head/sys/amd64/amd64/pmap.c
==============================================================================
--- head/sys/amd64/amd64/pmap.c	Thu Jul 19 03:51:16 2012	(r238609)
+++ head/sys/amd64/amd64/pmap.c	Thu Jul 19 05:34:19 2012	(r238610)
@@ -3576,13 +3576,9 @@ validate:
 	if ((origpte & PG_V) != 0) {
 		invlva = FALSE;
 		origpte = pte_load_store(pte, newpte);
-		if ((origpte & PG_A) != 0) {
-			if ((origpte & PG_MANAGED) != 0)
-				vm_page_aflag_set(om, PGA_REFERENCED);
-			if (opa != pa || ((origpte & PG_NX) == 0 &&
-			    (newpte & PG_NX) != 0))
-				invlva = TRUE;
-		}
+		if ((origpte & PG_A) != 0 && (opa != pa ||
+		    ((origpte & PG_NX) == 0 && (newpte & PG_NX) != 0)))
+			invlva = TRUE;
 		if ((origpte & (PG_M | PG_RW)) == (PG_M | PG_RW)) {
 			if ((origpte & PG_MANAGED) != 0)
 				vm_page_dirty(om);
@@ -3590,6 +3586,8 @@ validate:
 				invlva = TRUE;
 		}
 		if (opa != pa && (origpte & PG_MANAGED) != 0) {
+			if ((origpte & PG_A) != 0)
+				vm_page_aflag_set(om, PGA_REFERENCED);
 			CHANGE_PV_LIST_LOCK_TO_PHYS(&lock, opa);
 			pmap_pvh_free(&om->md, pmap, va);
 			if ((om->aflags & PGA_WRITEABLE) != 0 &&