ocfs2: Remove mlog(0) from fs/ocfs2/heartbeat.c

This is the 2nd step to remove the debug info of SUPER.

Signed-off-by: Tao Ma <boyu.mt@taobao.com>

diff --git a/fs/ocfs2/heartbeat.c b/fs/ocfs2/heartbeat.c
index 1aa863d..d8208b2 100644
--- a/fs/ocfs2/heartbeat.c
+++ b/fs/ocfs2/heartbeat.c
@@ -28,7 +28,6 @@
 #include <linux/types.h>
 #include <linux/highmem.h>
 
-#define MLOG_MASK_PREFIX ML_SUPER
 #include <cluster/masklog.h>
 
 #include "ocfs2.h"
@@ -37,6 +36,7 @@
 #include "heartbeat.h"
 #include "inode.h"
 #include "journal.h"
+#include "ocfs2_trace.h"
 
 #include "buffer_head_io.h"
 
@@ -66,7 +66,7 @@
 
 	BUG_ON(osb->node_num == node_num);
 
-	mlog(0, "ocfs2: node down event for %d\n", node_num);
+	trace_ocfs2_do_node_down(node_num);
 
 	if (!osb->cconn) {
 		/*
diff --git a/fs/ocfs2/ocfs2_trace.h b/fs/ocfs2/ocfs2_trace.h
index d70471f..876b119d 100644
--- a/fs/ocfs2/ocfs2_trace.h
+++ b/fs/ocfs2/ocfs2_trace.h
@@ -1530,6 +1530,13 @@
 DEFINE_OCFS2_INT_EVENT(ocfs2_find_slot);
 
 /* End of trace events for fs/ocfs2/slot_map.c. */
+
+/* Trace events for fs/ocfs2/heartbeat.c. */
+
+DEFINE_OCFS2_INT_EVENT(ocfs2_do_node_down);
+
+/* End of trace events for fs/ocfs2/heartbeat.c. */
+
 #endif /* _TRACE_OCFS2_H */
 
 /* This part must be outside protection */