147 	ssize_t ret;  in read_ahead_kb_store()  local
149 	ret = kstrtoul(buf, 10, &read_ahead_kb);  in read_ahead_kb_store()
150 	if (ret < 0)  in read_ahead_kb_store()
151 		return ret;  in read_ahead_kb_store()
177 	ssize_t ret;  in min_ratio_store()  local
179 	ret = kstrtouint(buf, 10, &ratio);  in min_ratio_store()
180 	if (ret < 0)  in min_ratio_store()
181 		return ret;  in min_ratio_store()
183 	ret = bdi_set_min_ratio(bdi, ratio);  in min_ratio_store()
184 	if (!ret)  in min_ratio_store()
185 		ret = count;  in min_ratio_store()
187 	return ret;  in min_ratio_store()
196 	ssize_t ret;  in max_ratio_store()  local
198 	ret = kstrtouint(buf, 10, &ratio);  in max_ratio_store()
199 	if (ret < 0)  in max_ratio_store()
200 		return ret;  in max_ratio_store()
202 	ret = bdi_set_max_ratio(bdi, ratio);  in max_ratio_store()
203 	if (!ret)  in max_ratio_store()
204 		ret = count;  in max_ratio_store()
206 	return ret;  in max_ratio_store()
541 	int ret = 0;  in cgwb_create()  local
563 		ret = -ENOMEM;  in cgwb_create()
567 	ret = wb_init(wb, bdi, blkcg_css->id, gfp);  in cgwb_create()
568 	if (ret)  in cgwb_create()
571 	ret = percpu_ref_init(&wb->refcnt, cgwb_release, 0, gfp);  in cgwb_create()
572 	if (ret)  in cgwb_create()
575 	ret = fprop_local_init_percpu(&wb->memcg_completions, gfp);  in cgwb_create()
576 	if (ret)  in cgwb_create()
590 	ret = -ENODEV;  in cgwb_create()
595 		ret = radix_tree_insert(&bdi->cgwb_tree, memcg_css->id, wb);  in cgwb_create()
596 		if (!ret) {  in cgwb_create()
605 	if (ret) {  in cgwb_create()
606 		if (ret == -EEXIST)  in cgwb_create()
607 			ret = 0;  in cgwb_create()
622 	return ret;  in cgwb_create()
682 	int ret;  in cgwb_bdi_init()  local
689 	ret = wb_init(&bdi->wb, bdi, 1, GFP_KERNEL);  in cgwb_bdi_init()
690 	if (!ret) {  in cgwb_bdi_init()
694 	return ret;  in cgwb_bdi_init()
838 	int ret;  in bdi_init()  local
850 	ret = cgwb_bdi_init(bdi);  in bdi_init()
852 	return ret;  in bdi_init()
901 	int ret;  in bdi_register()  local
904 	ret = bdi_register_va(bdi, fmt, args);  in bdi_register()
906 	return ret;  in bdi_register()
1016 	long ret;  in congestion_wait()  local
1022 	ret = io_schedule_timeout(timeout);  in congestion_wait()
1028 	return ret;  in congestion_wait()
1052 	long ret;  in wait_iff_congested()  local
1067 		ret = timeout - (jiffies - start);  in wait_iff_congested()
1068 		if (ret < 0)  in wait_iff_congested()
1069 			ret = 0;  in wait_iff_congested()
1076 	ret = io_schedule_timeout(timeout);  in wait_iff_congested()
1083 	return ret;  in wait_iff_congested()