add comments

diff --git a/tests/dd/misc b/tests/dd/misc
index 40fc7bf..51f36d2 100755 (executable)
--- a/tests/dd/misc
+++ b/tests/dd/misc
@@ -1,4 +1,6 @@
 #!/bin/sh
+# Ensure dd treats `--' properly.
+# Also ensure that iflags=noatime works.
 
 tmp_in=dd-in.$$
 tmp_out=dd-out.$$