Reorder test_root testing from 3,5,7 to 7,5,3 so
 that average case becomes good. Even number check
 is added. 

 Signed-off-by: Prasanna Meda <pmeda@akamai.com>

--- a/fs/ext3/balloc.c	Fri Jan 28 22:21:45 2005
+++ b/fs/ext3/balloc.c	Sat Jan 29 02:51:39 2005
@@ -1451,8 +1451,10 @@
 {
 	if (group <= 1)
 		return 1;
-	return (test_root(group, 3) || test_root(group, 5) ||
-		test_root(group, 7));
+	if (!(group & 1))
+		return 0;
+	return (test_root(group, 7) || test_root(group, 5) ||
+		test_root(group, 3));
 }
 
 /**