89 static void store_io_and_region_in_bio(struct bio *bio, struct io *io,  in store_io_and_region_in_bio()  argument
97 	bio->bi_private = (void *)((unsigned long)io | region);  in store_io_and_region_in_bio()
100 static void retrieve_io_and_region_from_bio(struct bio *bio, struct io **io,  in retrieve_io_and_region_from_bio()  argument
103 	unsigned long val = (unsigned long)bio->bi_private;  in retrieve_io_and_region_from_bio()
136 static void endio(struct bio *bio)  in endio()  argument
142 	if (bio->bi_error && bio_data_dir(bio) == READ)  in endio()
143 		zero_fill_bio(bio);  in endio()
148 	retrieve_io_and_region_from_bio(bio, &io, &region);  in endio()
150 	error = bio->bi_error;  in endio()
151 	bio_put(bio);  in endio()
220 static void bio_dp_init(struct dpages *dp, struct bio *bio)  in bio_dp_init()  argument
224 	dp->context_ptr = __bvec_iter_bvec(bio->bi_io_vec, bio->bi_iter);  in bio_dp_init()
225 	dp->context_u = bio->bi_iter.bi_bvec_done;  in bio_dp_init()
284 	struct bio *bio;  in do_region()  local
321 		bio = bio_alloc_bioset(GFP_NOIO, num_bvecs, io->client->bios);  in do_region()
322 		bio->bi_iter.bi_sector = where->sector + (where->count - remaining);  in do_region()
323 		bio->bi_bdev = where->bdev;  in do_region()
324 		bio->bi_end_io = endio;  in do_region()
325 		store_io_and_region_in_bio(bio, io, region);  in do_region()
329 			bio->bi_iter.bi_size = num_sectors << SECTOR_SHIFT;  in do_region()
336 			bio_add_page(bio, page, logical_block_size, offset);  in do_region()
338 			bio->bi_iter.bi_size = num_sectors << SECTOR_SHIFT;  in do_region()
349 			if (!bio_add_page(bio, page, len, offset))  in do_region()
358 		submit_bio(rw, bio);  in do_region()
478 		bio_dp_init(dp, io_req->mem.ptr.bio);  in dp_init()