From: Jay Vosburgh Date: Sun, 18 May 2008 04:10:07 +0000 (-0700) Subject: bonding: Use msecs_to_jiffies, eliminate panic X-Git-Url: http://drtracing.org/?a=commitdiff_plain;h=5ce0da8f0386b62345312ec8fed31303732f4220;p=deliverable%2Flinux.git bonding: Use msecs_to_jiffies, eliminate panic Convert bonding to use msecs_to_jiffies instead of doing the math. For the ARP monitor, there was an underflow problem that could result in an infinite loop. The miimon already had that worked around, but this is cleaner. Originally by Nicolas de Pesloüan Jay Vosburgh corrected a math error in the original; Nicolas' original commit message is: When setting arp_interval parameter to a very low value, delta_in_ticks for next arp might become 0, causing an infinite loop. See http://bugzilla.kernel.org/show_bug.cgi?id=10680 Same problem for miimon parameter already fixed, but fix might be enhanced, by using msecs_to_jiffies() function. Signed-off-by: Nicolas de Pesloüan Signed-off-by: Jay Vosburgh Signed-off-by: Jeff Garzik --- diff --git a/drivers/net/bonding/bond_main.c b/drivers/net/bonding/bond_main.c index 50a40e433154..12c71582f4f6 100644 --- a/drivers/net/bonding/bond_main.c +++ b/drivers/net/bonding/bond_main.c @@ -2397,7 +2397,7 @@ void bond_mii_monitor(struct work_struct *work) read_lock(&bond->lock); } - delay = ((bond->params.miimon * HZ) / 1000) ? : 1; + delay = msecs_to_jiffies(bond->params.miimon); read_unlock(&bond->lock); queue_delayed_work(bond->wq, &bond->mii_work, delay); } @@ -2707,7 +2707,7 @@ void bond_loadbalance_arp_mon(struct work_struct *work) read_lock(&bond->lock); - delta_in_ticks = (bond->params.arp_interval * HZ) / 1000; + delta_in_ticks = msecs_to_jiffies(bond->params.arp_interval); if (bond->kill_timers) { goto out; @@ -2837,7 +2837,7 @@ void bond_activebackup_arp_mon(struct work_struct *work) read_lock(&bond->lock); - delta_in_ticks = (bond->params.arp_interval * HZ) / 1000; + delta_in_ticks = msecs_to_jiffies(bond->params.arp_interval); if (bond->kill_timers) { goto out;