ocfs2/dlm: Expose dlm_protocol in dlm_state

Add dlm_protocol to the list of info shown by the debugfs file, dlm_state.

Signed-off-by: Sunil Mushran <sunil.mushran@oracle.com>
diff --git a/fs/ocfs2/dlm/dlmdebug.c b/fs/ocfs2/dlm/dlmdebug.c
index 901ca52..f693ab8 100644
--- a/fs/ocfs2/dlm/dlmdebug.c
+++ b/fs/ocfs2/dlm/dlmdebug.c
@@ -782,7 +782,9 @@
 
 	/* Domain: xxxxxxxxxx  Key: 0xdfbac769 */
 	out += snprintf(db->buf + out, db->len - out,
-			"Domain: %s  Key: 0x%08x\n", dlm->name, dlm->key);
+			"Domain: %s  Key: 0x%08x  Protocol: %d.%d\n",
+			dlm->name, dlm->key, dlm->dlm_locking_proto.pv_major,
+			dlm->dlm_locking_proto.pv_minor);
 
 	/* Thread Pid: xxx  Node: xxx  State: xxxxx */
 	out += snprintf(db->buf + out, db->len - out,