484 	struct blkcg *blkcg = css_to_blkcg(wb->blkcg_css);  in cgwb_release_workfn()
490 	css_put(wb->blkcg_css);  in cgwb_release_workfn()
530 	struct cgroup_subsys_state *blkcg_css;  in cgwb_create()  local
538 	blkcg_css = cgroup_get_e_css(memcg_css->cgroup, &io_cgrp_subsys);  in cgwb_create()
539 	blkcg = css_to_blkcg(blkcg_css);  in cgwb_create()
546 	if (wb && wb->blkcg_css != blkcg_css) {  in cgwb_create()
561 	ret = wb_init(wb, bdi, blkcg_css->id, gfp);  in cgwb_create()
574 	wb->blkcg_css = blkcg_css;  in cgwb_create()
596 			css_get(blkcg_css);  in cgwb_create()
616 	css_put(blkcg_css);  in cgwb_create()
654 		struct cgroup_subsys_state *blkcg_css;  in wb_get_lookup()  local
657 		blkcg_css = cgroup_get_e_css(memcg_css->cgroup, &io_cgrp_subsys);  in wb_get_lookup()
658 		if (unlikely(wb->blkcg_css != blkcg_css || !wb_tryget(wb)))  in wb_get_lookup()
660 		css_put(blkcg_css);  in wb_get_lookup()
706 		bdi->wb.blkcg_css = blkcg_root_css;  in cgwb_bdi_init()