2473 	mgctx->tset.nr_tasks++;  in cgroup_migrate_add_task()
2478 			      &mgctx->tset.src_csets);  in cgroup_migrate_add_task()
2481 			      &mgctx->tset.dst_csets);  in cgroup_migrate_add_task()
2491 struct task_struct *cgroup_taskset_first(struct cgroup_taskset *tset,  in cgroup_taskset_first()  argument
2494 	tset->cur_cset = list_first_entry(tset->csets, struct css_set, mg_node);  in cgroup_taskset_first()
2495 	tset->cur_task = NULL;  in cgroup_taskset_first()
2497 	return cgroup_taskset_next(tset, dst_cssp);  in cgroup_taskset_first()
2508 struct task_struct *cgroup_taskset_next(struct cgroup_taskset *tset,  in cgroup_taskset_next()  argument
2511 	struct css_set *cset = tset->cur_cset;  in cgroup_taskset_next()
2512 	struct task_struct *task = tset->cur_task;  in cgroup_taskset_next()
2514 	while (CGROUP_HAS_SUBSYS_CONFIG && &cset->mg_node != tset->csets) {  in cgroup_taskset_next()
2522 			tset->cur_cset = cset;  in cgroup_taskset_next()
2523 			tset->cur_task = task;  in cgroup_taskset_next()
2532 				*dst_cssp = cset->mg_dst_cset->subsys[tset->ssid];  in cgroup_taskset_next()
2534 				*dst_cssp = cset->subsys[tset->ssid];  in cgroup_taskset_next()
2557 	struct cgroup_taskset *tset = &mgctx->tset;  in cgroup_migrate_execute()  local
2564 	if (tset->nr_tasks) {  in cgroup_migrate_execute()
2567 				tset->ssid = ssid;  in cgroup_migrate_execute()
2568 				ret = ss->can_attach(tset);  in cgroup_migrate_execute()
2583 	list_for_each_entry(cset, &tset->src_csets, mg_node) {  in cgroup_migrate_execute()
2609 	tset->csets = &tset->dst_csets;  in cgroup_migrate_execute()
2611 	if (tset->nr_tasks) {  in cgroup_migrate_execute()
2614 				tset->ssid = ssid;  in cgroup_migrate_execute()
2615 				ss->attach(tset);  in cgroup_migrate_execute()
2624 	if (tset->nr_tasks) {  in cgroup_migrate_execute()
2629 				tset->ssid = ssid;  in cgroup_migrate_execute()
2630 				ss->cancel_attach(tset);  in cgroup_migrate_execute()
2636 	list_splice_init(&tset->dst_csets, &tset->src_csets);  in cgroup_migrate_execute()
2637 	list_for_each_entry_safe(cset, tmp_cset, &tset->src_csets, mg_node) {  in cgroup_migrate_execute()
2648 	tset->nr_tasks = 0;  in cgroup_migrate_execute()
2649 	tset->csets    = &tset->src_csets;  in cgroup_migrate_execute()