Neil Horman 2cde6acd49 netpoll: Fix __netpoll_rcu_free so that it can hold the rtnl lock ... __netpoll_rcu_free is used to free netpoll structures when the rtnl_lock is already held. The mechanism is used to asynchronously call __netpoll_cleanup outside of the holding of the rtnl_lock, so as to avoid deadlock. Unfortunately, __netpoll_cleanup modifies pointers (dev->np), which means the rtnl_lock must be held while calling it. Further, it cannot be held, because rcu callbacks may be issued in softirq contexts, which cannot sleep. Fix this by converting the rcu callback to a work queue that is guaranteed to get scheduled in process context, so that we can hold the rtnl properly while calling __netpoll_cleanup Tested successfully by myself. Signed-off-by: Neil Horman <nhorman@tuxdriver.com> CC: "David S. Miller" <davem@davemloft.net> CC: Cong Wang <amwang@redhat.com> CC: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>		2013-02-11 19:19:33 -05:00
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Kconfig	net/8021q: Implement Multiple VLAN Registration Protocol (MVRP)	2013-02-10 20:37:22 -05:00
Makefile	net/8021q: Implement Multiple VLAN Registration Protocol (MVRP)	2013-02-10 20:37:22 -05:00
vlan.c	net/8021q: Implement Multiple VLAN Registration Protocol (MVRP)	2013-02-10 20:37:22 -05:00
vlan.h	net/8021q: Implement Multiple VLAN Registration Protocol (MVRP)	2013-02-10 20:37:22 -05:00
vlan_core.c	net: disallow drivers with buggy VLAN accel to register_netdevice()	2013-01-29 22:58:40 -05:00
vlan_dev.c	netpoll: Fix __netpoll_rcu_free so that it can hold the rtnl lock	2013-02-11 19:19:33 -05:00
vlan_gvrp.c
vlan_mvrp.c	net/8021q: Implement Multiple VLAN Registration Protocol (MVRP)	2013-02-10 20:37:22 -05:00
vlan_netlink.c	net/8021q: Implement Multiple VLAN Registration Protocol (MVRP)	2013-02-10 20:37:22 -05:00
vlanproc.c	treewide: fix comment/printk/variable typos	2012-09-01 10:33:05 -07:00
vlanproc.h