tree df3621b3720766e4bf3a330d1114e8a1c5beace1
parent 48a87cc26c13b68f6cce4e9d769fcb17a6b3e4b8
author John Fastabend <john.r.fastabend@intel.com> 1344947675 +0000
committer David S. Miller <davem@davemloft.net> 1345154171 -0700

net: netprio: fix cgrp create and write priomap race

A race exists where creating cgroups and also updating the priomap
may result in losing a priomap update. This is because priomap
writers are not protected by rtnl_lock.

Move priority writer into rtnl_lock()/rtnl_unlock().

CC: Neil Horman <nhorman@tuxdriver.com>
Reported-by: Al Viro <viro@ZenIV.linux.org.uk>
Signed-off-by: John Fastabend <john.r.fastabend@intel.com>
Acked-by: Neil Horman <nhorman@tuxdriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>