From 5ce0da8f0386b62345312ec8fed31303732f4220 Mon Sep 17 00:00:00 2001 From: Jay Vosburgh Date: Sat, 17 May 2008 21:10:07 -0700 Subject: [PATCH] bonding: Use msecs_to_jiffies, eliminate panic MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit 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 --- drivers/net/bonding/bond_main.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/net/bonding/bond_main.c b/drivers/net/bonding/bond_main.c index 50a40e4..12c7158 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; -- 2.7.4