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

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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 <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Herbert Xu 2007-05-08 23:22:43 -07:00 • committed by David S. Miller
parent 4cd8c9e87b
commit db0ccffed9
1 changed files with 3 additions and 1 deletions
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4
net/core/link_watch.c
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@ -101,8 +101,10 @@ static void linkwatch_schedule_work(unsigned long delay)
return; return;
/* If we wrap around we'll delay it by at most HZ. */ /* If we wrap around we'll delay it by at most HZ. */
if (delay > HZ) if (delay > HZ) {
linkwatch_nextevent = jiffies;
delay = 0; delay = 0;
}
schedule_delayed_work(&linkwatch_work, delay); schedule_delayed_work(&linkwatch_work, delay);
} }