282 	struct blkdev_dio *dio = bio->bi_private;  in blkdev_bio_end_io()  local
283 	bool should_dirty = dio->should_dirty;  in blkdev_bio_end_io()
285 	if (dio->multi_bio && !atomic_dec_and_test(&dio->ref)) {  in blkdev_bio_end_io()
286 		if (bio->bi_status && !dio->bio.bi_status)  in blkdev_bio_end_io()
287 			dio->bio.bi_status = bio->bi_status;  in blkdev_bio_end_io()
289 		if (!dio->is_sync) {  in blkdev_bio_end_io()
290 			struct kiocb *iocb = dio->iocb;  in blkdev_bio_end_io()
293 			if (likely(!dio->bio.bi_status)) {  in blkdev_bio_end_io()
294 				ret = dio->size;  in blkdev_bio_end_io()
297 				ret = blk_status_to_errno(dio->bio.bi_status);  in blkdev_bio_end_io()
300 			dio->iocb->ki_complete(iocb, ret, 0);  in blkdev_bio_end_io()
301 			bio_put(&dio->bio);  in blkdev_bio_end_io()
303 			struct task_struct *waiter = dio->waiter;  in blkdev_bio_end_io()
305 			WRITE_ONCE(dio->waiter, NULL);  in blkdev_bio_end_io()
329 	struct blkdev_dio *dio;  in __blkdev_direct_IO()  local
343 	dio = container_of(bio, struct blkdev_dio, bio);  in __blkdev_direct_IO()
344 	dio->is_sync = is_sync = is_sync_kiocb(iocb);  in __blkdev_direct_IO()
345 	if (dio->is_sync)  in __blkdev_direct_IO()
346 		dio->waiter = current;  in __blkdev_direct_IO()
348 		dio->iocb = iocb;  in __blkdev_direct_IO()
350 	dio->size = 0;  in __blkdev_direct_IO()
351 	dio->multi_bio = false;  in __blkdev_direct_IO()
352 	dio->should_dirty = is_read && (iter->type == ITER_IOVEC);  in __blkdev_direct_IO()
359 		bio->bi_private = dio;  in __blkdev_direct_IO()
372 			if (dio->should_dirty)  in __blkdev_direct_IO()
379 		dio->size += bio->bi_iter.bi_size;  in __blkdev_direct_IO()
388 		if (!dio->multi_bio) {  in __blkdev_direct_IO()
389 			dio->multi_bio = true;  in __blkdev_direct_IO()
390 			atomic_set(&dio->ref, 2);  in __blkdev_direct_IO()
392 			atomic_inc(&dio->ref);  in __blkdev_direct_IO()
405 		if (!READ_ONCE(dio->waiter))  in __blkdev_direct_IO()
415 		ret = blk_status_to_errno(dio->bio.bi_status);  in __blkdev_direct_IO()
417 		ret = dio->size;  in __blkdev_direct_IO()
419 	bio_put(&dio->bio);  in __blkdev_direct_IO()