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authorJay Vosburgh <fubar@us.ibm.com>2008-01-17 16:25:03 -0800
committerJeff Garzik <jeff@garzik.org>2008-01-18 14:38:39 -0500
commit5655662dab4ef044be7efd155f2f5fef2e486545 (patch)
treed4003635df3c8cba3554e023d831ff8d4e5828e5 /drivers/net/bonding
parent027ea0416c955778ceca7ef82e48a1dd6b4617c9 (diff)
downloadlinux-5655662dab4ef044be7efd155f2f5fef2e486545.tar.gz
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>
Diffstat (limited to 'drivers/net/bonding')
-rw-r--r--drivers/net/bonding/bond_main.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/net/bonding/bond_main.c b/drivers/net/bonding/bond_main.c
index 2c6da4969382..49a198206e3d 100644
--- a/drivers/net/bonding/bond_main.c
+++ b/drivers/net/bonding/bond_main.c
@@ -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;