2744 void cgroup_migrate_add_src(struct css_set *src_cset,  in cgroup_migrate_add_src()  argument
2758 	if (src_cset->dead)  in cgroup_migrate_add_src()
2761 	if (!list_empty(&src_cset->mg_src_preload_node))  in cgroup_migrate_add_src()
2764 	src_cgrp = cset_cgroup_from_root(src_cset, dst_cgrp->root);  in cgroup_migrate_add_src()
2766 	WARN_ON(src_cset->mg_src_cgrp);  in cgroup_migrate_add_src()
2767 	WARN_ON(src_cset->mg_dst_cgrp);  in cgroup_migrate_add_src()
2768 	WARN_ON(!list_empty(&src_cset->mg_tasks));  in cgroup_migrate_add_src()
2769 	WARN_ON(!list_empty(&src_cset->mg_node));  in cgroup_migrate_add_src()
2771 	src_cset->mg_src_cgrp = src_cgrp;  in cgroup_migrate_add_src()
2772 	src_cset->mg_dst_cgrp = dst_cgrp;  in cgroup_migrate_add_src()
2773 	get_css_set(src_cset);  in cgroup_migrate_add_src()
2774 	list_add_tail(&src_cset->mg_src_preload_node, &mgctx->preloaded_src_csets);  in cgroup_migrate_add_src()
2793 	struct css_set *src_cset, *tmp_cset;  in cgroup_migrate_prepare_dst()  local
2798 	list_for_each_entry_safe(src_cset, tmp_cset, &mgctx->preloaded_src_csets,  in cgroup_migrate_prepare_dst()
2804 		dst_cset = find_css_set(src_cset, src_cset->mg_dst_cgrp);  in cgroup_migrate_prepare_dst()
2808 		WARN_ON_ONCE(src_cset->mg_dst_cset || dst_cset->mg_dst_cset);  in cgroup_migrate_prepare_dst()
2815 		if (src_cset == dst_cset) {  in cgroup_migrate_prepare_dst()
2816 			src_cset->mg_src_cgrp = NULL;  in cgroup_migrate_prepare_dst()
2817 			src_cset->mg_dst_cgrp = NULL;  in cgroup_migrate_prepare_dst()
2818 			list_del_init(&src_cset->mg_src_preload_node);  in cgroup_migrate_prepare_dst()
2819 			put_css_set(src_cset);  in cgroup_migrate_prepare_dst()
2824 		src_cset->mg_dst_cset = dst_cset;  in cgroup_migrate_prepare_dst()
2833 			if (src_cset->subsys[ssid] != dst_cset->subsys[ssid])  in cgroup_migrate_prepare_dst()
3040 	struct css_set *src_cset;  in cgroup_update_dfl_csses()  local
3080 	list_for_each_entry(src_cset, &mgctx.preloaded_src_csets,  in cgroup_update_dfl_csses()
3085 		list_for_each_entry_safe(task, ntask, &src_cset->tasks, cg_list)  in cgroup_update_dfl_csses()