diff --git a/lustre/ChangeLog b/lustre/ChangeLog
index 23f8e54f222ff84a0b97a13e8fc801b4bdfc36d5..6bfea6df9b43368671dbe23e9d845b45078f5491 100644
--- a/lustre/ChangeLog
+++ b/lustre/ChangeLog
@@ -139,7 +139,10 @@ Details    : Add "-u" option for lustre_config script to support upgrading 1.4
 
 Severity   : normal
 Bugzilla   : 13570
-Description: grant fixes to avoid grant_space > avail_space
+Description: To avoid grant space > avaible space when the disk is almost
+             full. Without this patch you might see the error "grant XXXX >
+	     available" or some LBUG about grant, when the disk is almost 
+	     full.
 Details    : In filter_check_grant, for non_grant cache write, we should
 	     check the left space by  if (*left > ungranted + bytes), instead 
 	     of (*left > ungranted), because only we are sure the left space