* commit 'fed46d1f99d22a5a9efd06da0bf5baf6a04045d8':
selftests: cgroup: add a selftest for memory.reclaim
selftests: cgroup: fix unsigned comparison with less than zero
selftests: cgroup: fix alloc_anon_noexit() instantly freeing memory
selftests: cgroup: return -errno from cg_read()/cg_write() on failure
memcg: introduce per-memcg reclaim interface