Every file should include the headers containing the externs its global
functions (in this case for ns_cgroup_clone()).
Signed-off-by: NAdrian Bunk <bunk@kernel.org>
Acked-by: NSerge Hallyn <serue@us.ibm.com>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>