[NET] link_watch: Eliminate potential delay on wrap-around

When the jiffies wrap around or when the system boots up for the first time, down events can be delayed indefinitely since we no longer update linkwatch_nextevent when only urgent events are processed. This patch fixes this by setting linkwatch_nextevent when a wrap-around occurs. Signed-off-by: Herbert Xu <[email protected]> Signed-off-by: David S. Miller <[email protected]>
kyagi · May 11, 2007 · db0ccff · db0ccff
1 parent 4cd8c9e
commit db0ccff
Showing 1 changed file with 3 additions and 1 deletion.
diff --git a/net/core/link_watch.c b/net/core/link_watch.c
@@ -101,8 +101,10 @@ static void linkwatch_schedule_work(unsigned long delay)
 		return;
 
 	/* If we wrap around we'll delay it by at most HZ. */
-	if (delay > HZ)
+	if (delay > HZ) {
+		linkwatch_nextevent = jiffies;
 		delay = 0;
+	}
 
 	schedule_delayed_work(&linkwatch_work, delay);
 }