2492 static void cgroup_migrate_add_src(struct css_set *src_cset,  in cgroup_migrate_add_src()  argument
2506 	if (src_cset->dead)  in cgroup_migrate_add_src()
2509 	src_cgrp = cset_cgroup_from_root(src_cset, dst_cgrp->root);  in cgroup_migrate_add_src()
2511 	if (!list_empty(&src_cset->mg_preload_node))  in cgroup_migrate_add_src()
2514 	WARN_ON(src_cset->mg_src_cgrp);  in cgroup_migrate_add_src()
2515 	WARN_ON(!list_empty(&src_cset->mg_tasks));  in cgroup_migrate_add_src()
2516 	WARN_ON(!list_empty(&src_cset->mg_node));  in cgroup_migrate_add_src()
2518 	src_cset->mg_src_cgrp = src_cgrp;  in cgroup_migrate_add_src()
2519 	get_css_set(src_cset);  in cgroup_migrate_add_src()
2520 	list_add(&src_cset->mg_preload_node, preloaded_csets);  in cgroup_migrate_add_src()
2543 	struct css_set *src_cset, *tmp_cset;  in cgroup_migrate_prepare_dst()  local
2556 	list_for_each_entry_safe(src_cset, tmp_cset, preloaded_csets, mg_preload_node) {  in cgroup_migrate_prepare_dst()
2559 		dst_cset = find_css_set(src_cset,  in cgroup_migrate_prepare_dst()
2560 					dst_cgrp ?: src_cset->dfl_cgrp);  in cgroup_migrate_prepare_dst()
2564 		WARN_ON_ONCE(src_cset->mg_dst_cset || dst_cset->mg_dst_cset);  in cgroup_migrate_prepare_dst()
2571 		if (src_cset == dst_cset) {  in cgroup_migrate_prepare_dst()
2572 			src_cset->mg_src_cgrp = NULL;  in cgroup_migrate_prepare_dst()
2573 			list_del_init(&src_cset->mg_preload_node);  in cgroup_migrate_prepare_dst()
2574 			put_css_set(src_cset);  in cgroup_migrate_prepare_dst()
2579 		src_cset->mg_dst_cset = dst_cset;  in cgroup_migrate_prepare_dst()
2918 	struct css_set *src_cset;  in cgroup_update_dfl_csses()  local
2946 	list_for_each_entry(src_cset, &preloaded_csets, mg_preload_node) {  in cgroup_update_dfl_csses()
2950 		if (!src_cset->mg_src_cgrp)  in cgroup_update_dfl_csses()
2954 		list_for_each_entry_safe(task, ntask, &src_cset->tasks, cg_list)  in cgroup_update_dfl_csses()