svn commit: r270627 - stable/10/sys/vm

[Konstantin Belousov]

Author: kib
Date: Mon Aug 25 20:49:25 2014
New Revision: 270627
URL: http://svnweb.freebsd.org/changeset/base/270627

Log:
  MFC r269978 (by alc):
  Avoid pointless (but harmless) actions on unmanaged pages.

Modified:
  stable/10/sys/vm/vm_fault.c
Directory Properties:
  stable/10/   (props changed)

Modified: stable/10/sys/vm/vm_fault.c
==============================================================================
--- stable/10/sys/vm/vm_fault.c	Mon Aug 25 20:37:12 2014	(r270626)
+++ stable/10/sys/vm/vm_fault.c	Mon Aug 25 20:49:25 2014	(r270627)
@@ -856,8 +856,9 @@ vnode_locked:
 	if (hardfault)
 		fs.entry->next_read = fs.pindex + faultcount - reqpage;
 
-	if ((prot & VM_PROT_WRITE) != 0 ||
-	    (fault_flags & VM_FAULT_DIRTY) != 0) {
+	if (((prot & VM_PROT_WRITE) != 0 ||
+	    (fault_flags & VM_FAULT_DIRTY) != 0) &&
+	    (fs.m->oflags & VPO_UNMANAGED) == 0) {
 		vm_object_set_writeable_dirty(fs.object);
 
 		/*