svn commit: r206886 - user/kmacy/head_page_lock_2/sys/vm

[Kip Macy]

Author: kmacy
Date: Tue Apr 20 04:37:07 2010
New Revision: 206886
URL: http://svn.freebsd.org/changeset/base/206886

Log:
  The busy flag is protected by the object lock, don't need to hold page lock across it
  
  Pointed out by: alc@

Modified:
  user/kmacy/head_page_lock_2/sys/vm/vm_object.c

Modified: user/kmacy/head_page_lock_2/sys/vm/vm_object.c
==============================================================================
--- user/kmacy/head_page_lock_2/sys/vm/vm_object.c	Tue Apr 20 04:16:39 2010	(r206885)
+++ user/kmacy/head_page_lock_2/sys/vm/vm_object.c	Tue Apr 20 04:37:07 2010	(r206886)
@@ -1445,9 +1445,9 @@ retry:
 		}
 		vm_page_lock(m);
 		vm_page_rename(m, new_object, idx);
+		vm_page_unlock(m);
 		/* page automatically made dirty by rename and cache handled */
 		vm_page_busy(m);
-		vm_page_unlock(m);
 	}
 	if (orig_object->type == OBJT_SWAP) {
 		/*