static struct vmpressure *vmpressure_parent(struct vmpressure *vmpr)
{
- struct cgroup_subsys_state *css = vmpressure_to_css(vmpr);
- struct mem_cgroup *memcg = mem_cgroup_from_css(css);
+ struct mem_cgroup *memcg = vmpressure_to_memcg(vmpr);
memcg = parent_mem_cgroup(memcg);
if (!memcg)