154 	struct blkdev_dio *dio = bio->bi_private;  in blkdev_bio_end_io()  local
155 	bool should_dirty = dio->should_dirty;  in blkdev_bio_end_io()
157 	if (bio->bi_status && !dio->bio.bi_status)  in blkdev_bio_end_io()
158 		dio->bio.bi_status = bio->bi_status;  in blkdev_bio_end_io()
160 	if (!dio->multi_bio || atomic_dec_and_test(&dio->ref)) {  in blkdev_bio_end_io()
161 		if (!dio->is_sync) {  in blkdev_bio_end_io()
162 			struct kiocb *iocb = dio->iocb;  in blkdev_bio_end_io()
165 			if (likely(!dio->bio.bi_status)) {  in blkdev_bio_end_io()
166 				ret = dio->size;  in blkdev_bio_end_io()
169 				ret = blk_status_to_errno(dio->bio.bi_status);  in blkdev_bio_end_io()
172 			dio->iocb->ki_complete(iocb, ret, 0);  in blkdev_bio_end_io()
173 			if (dio->multi_bio)  in blkdev_bio_end_io()
174 				bio_put(&dio->bio);  in blkdev_bio_end_io()
176 			struct task_struct *waiter = dio->waiter;  in blkdev_bio_end_io()
178 			WRITE_ONCE(dio->waiter, NULL);  in blkdev_bio_end_io()
198 	struct blkdev_dio *dio;  in __blkdev_direct_IO()  local
212 	dio = container_of(bio, struct blkdev_dio, bio);  in __blkdev_direct_IO()
213 	dio->is_sync = is_sync = is_sync_kiocb(iocb);  in __blkdev_direct_IO()
214 	if (dio->is_sync) {  in __blkdev_direct_IO()
215 		dio->waiter = current;  in __blkdev_direct_IO()
218 		dio->iocb = iocb;  in __blkdev_direct_IO()
221 	dio->size = 0;  in __blkdev_direct_IO()
222 	dio->multi_bio = false;  in __blkdev_direct_IO()
223 	dio->should_dirty = is_read && iter_is_iovec(iter);  in __blkdev_direct_IO()
236 		bio->bi_private = dio;  in __blkdev_direct_IO()
249 			if (dio->should_dirty)  in __blkdev_direct_IO()
258 		dio->size += bio->bi_iter.bi_size;  in __blkdev_direct_IO()
277 		if (!dio->multi_bio) {  in __blkdev_direct_IO()
285 			dio->multi_bio = true;  in __blkdev_direct_IO()
286 			atomic_set(&dio->ref, 2);  in __blkdev_direct_IO()
288 			atomic_inc(&dio->ref);  in __blkdev_direct_IO()
303 		if (!READ_ONCE(dio->waiter))  in __blkdev_direct_IO()
313 		ret = blk_status_to_errno(dio->bio.bi_status);  in __blkdev_direct_IO()
315 		ret = dio->size;  in __blkdev_direct_IO()
317 	bio_put(&dio->bio);  in __blkdev_direct_IO()