linux-next: build warning after merge of the cgroup tree

[Stephen Rothwell]

Hi Tejun,

After merging the cgroup tree, today's linux-next build (arm
multi_v7_defconfig) produced this warning:

kernel/cgroup/cgroup.c:439:13: warning: 'cgroup_get' defined but not used [-Wunused-function]
 static void cgroup_get(struct cgroup *cgrp)
             ^

Introduced by commit

  a590b90d472f ("cgroup: fix spurious warnings on cgroup_is_dead() from cgroup_sk_alloc()")

CONFIG_SOCK_CGROUP_DATA is not set for this build.

-- 
Cheers,
Stephen Rothwell