ocfs2: catch an invalid ast case in dlmfs

Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
diff --git a/fs/ocfs2/dlm/userdlm.c b/fs/ocfs2/dlm/userdlm.c
index bac4615..d0f1027 100644
--- a/fs/ocfs2/dlm/userdlm.c
+++ b/fs/ocfs2/dlm/userdlm.c
@@ -139,6 +139,10 @@
 		return;
 	}
 
+	mlog_bug_on_msg(lockres->l_requested == LKM_IVMODE,
+			"Lockres %s, requested ivmode. flags 0x%x\n",
+			lockres->l_name, lockres->l_flags);
+
 	/* we're downconverting. */
 	if (lockres->l_requested < lockres->l_level) {
 		if (lockres->l_requested <=