tree dd7c3e4e61d4c4bead3c7bd3db17401431e6d87e
parent 26574401fef6766f6c3ca25b5c13febe662d2a32
author Eric W. Biederman <ebiederm@xmission.com> 1242234170 +0000
committer David S. Miller <davem@davemloft.net> 1242710160 -0700

net: FIX bonding sysfs rtnl_lock deadlock

Sysfs files for a network device can not unconditionally take the
rtnl_lock as the bonding sysfs files do.  If someone accesses those
sysfs files while the network device is being unregistered with the
rtnl_lock held we will deadlock.

So use trylock and restart_syscall to avoid this problem.

Signed-off-by: Eric W. Biederman <ebiederm@aristanetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>