···194194But see section 8.2: when moving a task to another cgroup, its pages may195195be recharged to the new cgroup, if move_charge_at_immigrate has been chosen.196196197197-Exception: If CONFIG_CGROUP_CGROUP_MEMCG_SWAP is not used.197197+Exception: If CONFIG_MEMCG_SWAP is not used.198198When you do swapoff and make swapped-out pages of shmem(tmpfs) to199199be backed into memory in force, charges for pages are accounted against the200200caller of swapoff rather than the users of shmem.