cgroup: netprio: remove unnecessary task_netprioidx

Since the tasks have been migrated to the cgroup,
there is no need to call task_netprioidx to get
task's cgroup id.

Signed-off-by: Gao feng <gaofeng@cn.fujitsu.com>
Acked-by: Neil Horman <nhorman@tuxdriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/net/core/netprio_cgroup.c b/net/core/netprio_cgroup.c
index d9cd627e6a16a55bb9b6e8ec1619a0291e1621ab..9b7cf6c85f82447d3e03f33cd2c599de13ed3644 100644 (file)
--- a/net/core/netprio_cgroup.c
+++ b/net/core/netprio_cgroup.c
@@ -222,11 +222,10 @@ static void net_prio_attach(struct cgroup_subsys_state *css,
                            struct cgroup_taskset *tset)
 {
        struct task_struct *p;
-       void *v;
+       void *v = (void *)(unsigned long)css->cgroup->id;
 
        cgroup_taskset_for_each(p, css, tset) {
                task_lock(p);
-               v = (void *)(unsigned long)task_netprioidx(p);
                iterate_fd(p->files, 0, update_netprio, v);
                task_unlock(p);
        }