netprio_cgroup: use cgroup->id instead of cgroup_netprio_state->prioidx
authorTejun Heo <tj@kernel.org>
Thu, 22 Nov 2012 15:32:47 +0000 (07:32 -0800)
committerTejun Heo <tj@kernel.org>
Thu, 22 Nov 2012 15:32:47 +0000 (07:32 -0800)
commit88d642fa2ce87c125b84cfcf23c371618d8b08b4
tree3b55a847312a4286c77619090513096d973240eb
parent4a6ee25c7ea24decdf17af6fa2f2ab00acc7e4bf
netprio_cgroup: use cgroup->id instead of cgroup_netprio_state->prioidx

With priomap expansion no longer depending on knowing max id
allocated, netprio_cgroup can use cgroup->id insted of cs->prioidx.
Drop prioidx alloc/free logic and convert all uses to cgroup->id.

* In cgrp_css_alloc(), parent->id test is moved above @cs allocation
  to simplify error path.

* In cgrp_css_free(), @cs assignment is made initialization.

Signed-off-by: Tejun Heo <tj@kernel.org>
Acked-by: Neil Horman <nhorman@tuxdriver.com>
Tested-and-Acked-by: Daniel Wagner <daniel.wagner@bmw-carit.de>
Acked-by: David S. Miller <davem@davemloft.net>
include/net/netprio_cgroup.h
net/core/netprio_cgroup.c