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310b4816a5
a590b90d472f ("cgroup: fix spurious warnings on cgroup_is_dead() from cgroup_sk_alloc()") converted most cgroup_get() usages to cgroup_get_live() leaving cgroup_sk_alloc() the sole user of cgroup_get(). When !CONFIG_SOCK_CGROUP_DATA, this ends up triggering unused warning for cgroup_get(). Silence the warning by adding __maybe_unused to cgroup_get(). Reported-by: Stephen Rothwell <sfr@canb.auug.org.au> Link: http://lkml.kernel.org/r/20170501145340.17e8ef86@canb.auug.org.au Signed-off-by: Tejun Heo <tj@kernel.org>