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authorJay Vosburgh <fubar@us.ibm.com>2008-01-29 18:07:47 -0800
committerDavid S. Miller <davem@davemloft.net>2008-02-03 04:28:33 -0800
commit21c9d8d73dd1a152c49b4e3176193a099849d4c9 (patch)
tree115f1f6f1acd454db2ae0c56bc4e575476fa7b1e
parent2439f9ebd45349246b0fec7c47e6d0e05b1357c7 (diff)
bonding: do not acquire rtnl in ARP monitor
The ARP monitor functions currently acquire RTNL when performing failover operations, but do so incorrectly (out of order). This causes various warnings from might_sleep. The ARP monitor isn't supported for any of the bonding modes that actually require RTNL, so it is safe to not hold RTNL when failing over in the ARP monitor. Signed-off-by: Jay Vosburgh <fubar@us.ibm.com> Signed-off-by: Jeff Garzik <jeff@garzik.org> Signed-off-by: David S. Miller <davem@davemloft.net>
-rw-r--r--drivers/net/bonding/bond_main.c12
1 files changed, 0 insertions, 12 deletions
diff --git a/drivers/net/bonding/bond_main.c b/drivers/net/bonding/bond_main.c
index 8a8d5c3de9e..0942d82f7cb 100644
--- a/drivers/net/bonding/bond_main.c
+++ b/drivers/net/bonding/bond_main.c
@@ -2801,14 +2801,11 @@ void bond_loadbalance_arp_mon(struct work_struct *work)
}
if (do_failover) {
- rtnl_lock();
write_lock_bh(&bond->curr_slave_lock);
bond_select_active_slave(bond);
write_unlock_bh(&bond->curr_slave_lock);
- rtnl_unlock();
-
}
re_arm:
@@ -2865,8 +2862,6 @@ void bond_activebackup_arp_mon(struct work_struct *work)
slave->link = BOND_LINK_UP;
- rtnl_lock();
-
write_lock_bh(&bond->curr_slave_lock);
if ((!bond->curr_active_slave) &&
@@ -2902,7 +2897,6 @@ void bond_activebackup_arp_mon(struct work_struct *work)
}
write_unlock_bh(&bond->curr_slave_lock);
- rtnl_unlock();
}
} else {
read_lock(&bond->curr_slave_lock);
@@ -2972,7 +2966,6 @@ void bond_activebackup_arp_mon(struct work_struct *work)
bond->dev->name,
slave->dev->name);
- rtnl_lock();
write_lock_bh(&bond->curr_slave_lock);
bond_select_active_slave(bond);
@@ -2980,8 +2973,6 @@ void bond_activebackup_arp_mon(struct work_struct *work)
write_unlock_bh(&bond->curr_slave_lock);
- rtnl_unlock();
-
bond->current_arp_slave = slave;
if (slave) {
@@ -2999,13 +2990,10 @@ void bond_activebackup_arp_mon(struct work_struct *work)
bond->primary_slave->dev->name);
/* primary is up so switch to it */
- rtnl_lock();
write_lock_bh(&bond->curr_slave_lock);
bond_change_active_slave(bond, bond->primary_slave);
write_unlock_bh(&bond->curr_slave_lock);
- rtnl_unlock();
-
slave = bond->primary_slave;
slave->jiffies = jiffies;
} else {