tree ee83f80abf9d3fab5b2ce66648a024e0d44fd770
parent 5007392d8512e666107dc356d4c2e05627b9029b
author Eric W. Biederman <ebiederm@xmission.com> 1242233961 +0000
committer David S. Miller <davem@davemloft.net> 1242710158 -0700

net: Fix devinet_sysctl_forward

sysctls are unregistered with the rntl_lock held making
it unsafe to unconditionally grab the the rtnl_lock.  Instead
we need to call rtnl_trylock and restart the system call
if we can not grab it.  Otherwise we could deadlock at unregistration
time.

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