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bonding: Don't hold lock when calling rtnl_unlock 

Change bond_mii_monitor to not hold any locks when calling rtnl_unlock,
as rtnl_unlock can sleep (when acquring another mutex in netdev_run_todo).

Bug reported by Makito SHIOKAWA <mshiokawa@miraclelinux.com>, who
included a different patch.

Signed-off-by: Jay Vosburgh <fubar@us.ibm.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
This commit is contained in:
Jay Vosburgh 2008-01-17 16:25:03 -08:00 committed by Jeff Garzik
parent 027ea0416c
commit 5655662dab
1 changed files with 3 additions and 1 deletions
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4
drivers/net/bonding/bond_main.c
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@ -2386,7 +2386,9 @@ void bond_mii_monitor(struct work_struct *work)
rtnl_lock();
read_lock(&bond->lock);
__bond_mii_monitor(bond, 1);
rtnl_unlock();
read_unlock(&bond->lock);
rtnl_unlock(); /* might sleep, hold no other locks */
read_lock(&bond->lock);
}
delay = ((bond->params.miimon * HZ) / 1000) ? : 1;