[Ocfs2-commits] mfasheh commits r2541 - trunk/fs/ocfs2/cluster

[svn-commits at oss.oracle.com]

Author: mfasheh
Signed-off-by: manish
Date: 2005-08-23 16:31:54 -0500 (Tue, 23 Aug 2005)
New Revision: 2541

Modified:
   trunk/fs/ocfs2/cluster/heartbeat.c
Log:
* Allow time to move backward when calculating heartbeat thread intervals.
 
Signed-off-by: manish



Modified: trunk/fs/ocfs2/cluster/heartbeat.c
===================================================================
--- trunk/fs/ocfs2/cluster/heartbeat.c	2005-08-23 07:09:35 UTC (rev 2540)
+++ trunk/fs/ocfs2/cluster/heartbeat.c	2005-08-23 21:31:54 UTC (rev 2541)
@@ -856,8 +856,13 @@
 static void o2hb_tv_subtract(struct timeval *a,
 			     struct timeval *b)
 {
-	BUG_ON(a->tv_sec < b->tv_sec);
-	BUG_ON(a->tv_sec == b->tv_sec && a->tv_usec < b->tv_usec);
+	/* just return 0 when a is after b */
+	if (a->tv_sec < b->tv_sec ||
+	    (a->tv_sec == b->tv_sec && a->tv_usec < b->tv_usec)) {
+		a->tv_sec = 0;
+		a->tv_usec = 0;
+		return;
+	}
 
 	a->tv_sec -= b->tv_sec;
 	a->tv_usec -= b->tv_usec;