232 static void hib_init_batch(struct hib_bio_batch *hb)  in hib_init_batch()  argument
234 	atomic_set(&hb->count, 0);  in hib_init_batch()
235 	init_waitqueue_head(&hb->wait);  in hib_init_batch()
236 	hb->error = BLK_STS_OK;  in hib_init_batch()
237 	blk_start_plug(&hb->plug);  in hib_init_batch()
240 static void hib_finish_batch(struct hib_bio_batch *hb)  in hib_finish_batch()  argument
242 	blk_finish_plug(&hb->plug);  in hib_finish_batch()
247 	struct hib_bio_batch *hb = bio->bi_private;  in hib_end_io()  local
262 	if (bio->bi_status && !hb->error)  in hib_end_io()
263 		hb->error = bio->bi_status;  in hib_end_io()
264 	if (atomic_dec_and_test(&hb->count))  in hib_end_io()
265 		wake_up(&hb->wait);  in hib_end_io()
271 		struct hib_bio_batch *hb)  in hib_submit_io()  argument
289 	if (hb) {  in hib_submit_io()
291 		bio->bi_private = hb;  in hib_submit_io()
292 		atomic_inc(&hb->count);  in hib_submit_io()
302 static int hib_wait_io(struct hib_bio_batch *hb)  in hib_wait_io()  argument
308 	wait_event(hb->wait, atomic_read(&hb->count) == 0);  in hib_wait_io()
309 	return blk_status_to_errno(hb->error);  in hib_wait_io()
376 static int write_page(void *buf, sector_t offset, struct hib_bio_batch *hb)  in write_page()  argument
384 	if (hb) {  in write_page()
390 			ret = hib_wait_io(hb); /* Free pages */  in write_page()
400 				hb = NULL;	/* Go synchronous */  in write_page()
407 	return hib_submit_io(REQ_OP_WRITE, REQ_SYNC, offset, src, hb);  in write_page()
449 		struct hib_bio_batch *hb)  in swap_write_page()  argument
457 	error = write_page(buf, offset, hb);  in swap_write_page()
466 		error = write_page(handle->cur, handle->cur_swap, hb);  in swap_write_page()
473 		if (hb && low_free_pages() <= handle->reqd_free_pages) {  in swap_write_page()
474 			error = hib_wait_io(hb);  in swap_write_page()
546 	struct hib_bio_batch hb;  in save_image()  local
550 	hib_init_batch(&hb);  in save_image()
563 		ret = swap_write_page(handle, data_of(*snapshot), &hb);  in save_image()
571 	err2 = hib_wait_io(&hb);  in save_image()
572 	hib_finish_batch(&hb);  in save_image()
683 	struct hib_bio_batch hb;  in save_image_lzo()  local
692 	hib_init_batch(&hb);  in save_image_lzo()
847 				ret = swap_write_page(handle, page, &hb);  in save_image_lzo()
858 	err2 = hib_wait_io(&hb);  in save_image_lzo()
866 	hib_finish_batch(&hb);  in save_image_lzo()
1018 		struct hib_bio_batch *hb)  in swap_read_page()  argument
1029 	error = hib_submit_io(REQ_OP_READ, 0, offset, buf, hb);  in swap_read_page()
1067 	struct hib_bio_batch hb;  in load_image()  local
1071 	hib_init_batch(&hb);  in load_image()
1084 		ret = swap_read_page(handle, data_of(*snapshot), &hb);  in load_image()
1088 			ret = hib_wait_io(&hb);  in load_image()
1096 	err2 = hib_wait_io(&hb);  in load_image()
1097 	hib_finish_batch(&hb);  in load_image()
1172 	struct hib_bio_batch hb;  in load_image_lzo()  local
1185 	hib_init_batch(&hb);  in load_image_lzo()
1304 			ret = swap_read_page(handle, page[ring], &hb);  in load_image_lzo()
1331 			ret = hib_wait_io(&hb);  in load_image_lzo()
1385 			ret = hib_wait_io(&hb);  in load_image_lzo()
1461 	hib_finish_batch(&hb);  in load_image_lzo()