90 static void store_io_and_region_in_bio(struct bio *bio, struct io *io,  in store_io_and_region_in_bio()  argument
98 	bio->bi_private = (void *)((unsigned long)io | region);  in store_io_and_region_in_bio()
101 static void retrieve_io_and_region_from_bio(struct bio *bio, struct io **io,  in retrieve_io_and_region_from_bio()  argument
104 	unsigned long val = (unsigned long)bio->bi_private;  in retrieve_io_and_region_from_bio()
137 static void endio(struct bio *bio, int error)  in endio()  argument
142 	if (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 	bio_put(bio);  in endio()
219 static void bio_dp_init(struct dpages *dp, struct bio *bio)  in bio_dp_init()  argument
223 	dp->context_ptr = __bvec_iter_bvec(bio->bi_io_vec, bio->bi_iter);  in bio_dp_init()
224 	dp->context_u = bio->bi_iter.bi_bvec_done;  in bio_dp_init()
283 	struct bio *bio;  in do_region()  local
320 		bio = bio_alloc_bioset(GFP_NOIO, num_bvecs, io->client->bios);  in do_region()
321 		bio->bi_iter.bi_sector = where->sector + (where->count - remaining);  in do_region()
322 		bio->bi_bdev = where->bdev;  in do_region()
323 		bio->bi_end_io = endio;  in do_region()
324 		store_io_and_region_in_bio(bio, io, region);  in do_region()
328 			bio->bi_iter.bi_size = num_sectors << SECTOR_SHIFT;  in do_region()
335 			bio_add_page(bio, page, logical_block_size, offset);  in do_region()
337 			bio->bi_iter.bi_size = num_sectors << SECTOR_SHIFT;  in do_region()
348 			if (!bio_add_page(bio, page, len, offset))  in do_region()
357 		submit_bio(rw, bio);  in do_region()
477 		bio_dp_init(dp, io_req->mem.ptr.bio);  in dp_init()