1184 static dm_block_t get_block(struct era *era, struct bio *bio)  in get_block()  argument
1186 	sector_t block_nr = bio->bi_iter.bi_sector;  in get_block()
1196 static void remap_to_origin(struct era *era, struct bio *bio)  in remap_to_origin()  argument
1198 	bio->bi_bdev = era->origin_dev->bdev;  in remap_to_origin()
1230 	struct bio *bio;  in process_deferred_bios()  local
1242 	while ((bio = bio_list_pop(&deferred_bios))) {  in process_deferred_bios()
1245 					  get_block(era, bio));  in process_deferred_bios()
1256 		bio_list_add(&marked_bios, bio);  in process_deferred_bios()
1266 		while ((bio = bio_list_pop(&marked_bios)))  in process_deferred_bios()
1267 			bio_io_error(bio);  in process_deferred_bios()
1269 		while ((bio = bio_list_pop(&marked_bios)))  in process_deferred_bios()
1270 			generic_make_request(bio);  in process_deferred_bios()
1319 static void defer_bio(struct era *era, struct bio *bio)  in defer_bio()  argument
1322 	bio_list_add(&era->deferred_bios, bio);  in defer_bio()
1531 static int era_map(struct dm_target *ti, struct bio *bio)  in era_map()  argument
1534 	dm_block_t block = get_block(era, bio);  in era_map()
1541 	remap_to_origin(era, bio);  in era_map()
1546 	if (!(bio->bi_rw & REQ_FLUSH) &&  in era_map()
1547 	    (bio_data_dir(bio) == WRITE) &&  in era_map()
1549 		defer_bio(era, bio);  in era_map()