2185 ssize_t generic_file_buffered_read(struct kiocb *iocb,  in generic_file_buffered_read()  argument
2188 	struct file *filp = iocb->ki_filp;  in generic_file_buffered_read()
2192 	loff_t *ppos = &iocb->ki_pos;  in generic_file_buffered_read()
2215 	if (written && (iocb->ki_flags & IOCB_WAITQ))  in generic_file_buffered_read()
2216 		iocb->ki_flags |= IOCB_NOWAIT;  in generic_file_buffered_read()
2233 			if (iocb->ki_flags & IOCB_NOIO)  in generic_file_buffered_read()
2243 			if (iocb->ki_flags & IOCB_NOIO) {  in generic_file_buffered_read()
2257 			if (iocb->ki_flags & IOCB_WAITQ) {  in generic_file_buffered_read()
2263 								iocb->ki_waitq);  in generic_file_buffered_read()
2265 				if (iocb->ki_flags & IOCB_NOWAIT) {  in generic_file_buffered_read()
2358 		if (iocb->ki_flags & IOCB_WAITQ) {  in generic_file_buffered_read()
2363 			error = lock_page_async(page, iocb->ki_waitq);  in generic_file_buffered_read()
2385 		if (iocb->ki_flags & (IOCB_NOIO | IOCB_NOWAIT)) {  in generic_file_buffered_read()
2409 			if (iocb->ki_flags & IOCB_WAITQ) {  in generic_file_buffered_read()
2414 				error = lock_page_async(page, iocb->ki_waitq);  in generic_file_buffered_read()
2503 generic_file_read_iter(struct kiocb *iocb, struct iov_iter *iter)  in generic_file_read_iter()  argument
2511 	if (iocb->ki_flags & IOCB_DIRECT) {  in generic_file_read_iter()
2512 		struct file *file = iocb->ki_filp;  in generic_file_read_iter()
2518 		if (iocb->ki_flags & IOCB_NOWAIT) {  in generic_file_read_iter()
2519 			if (filemap_range_has_page(mapping, iocb->ki_pos,  in generic_file_read_iter()
2520 						   iocb->ki_pos + count - 1))  in generic_file_read_iter()
2524 						iocb->ki_pos,  in generic_file_read_iter()
2525 					        iocb->ki_pos + count - 1);  in generic_file_read_iter()
2532 		retval = mapping->a_ops->direct_IO(iocb, iter);  in generic_file_read_iter()
2534 			iocb->ki_pos += retval;  in generic_file_read_iter()
2548 		if (retval < 0 || !count || iocb->ki_pos >= size ||  in generic_file_read_iter()
2553 	retval = generic_file_buffered_read(iocb, iter, retval);  in generic_file_read_iter()
3185 generic_file_direct_write(struct kiocb *iocb, struct iov_iter *from)  in generic_file_direct_write()  argument
3187 	struct file	*file = iocb->ki_filp;  in generic_file_direct_write()
3190 	loff_t		pos = iocb->ki_pos;  in generic_file_direct_write()
3198 	if (iocb->ki_flags & IOCB_NOWAIT) {  in generic_file_direct_write()
3228 	written = mapping->a_ops->direct_IO(iocb, from);  in generic_file_direct_write()
3258 		iocb->ki_pos = pos;  in generic_file_direct_write()
3393 ssize_t __generic_file_write_iter(struct kiocb *iocb, struct iov_iter *from)  in __generic_file_write_iter()  argument
3395 	struct file *file = iocb->ki_filp;  in __generic_file_write_iter()
3412 	if (iocb->ki_flags & IOCB_DIRECT) {  in __generic_file_write_iter()
3415 		written = generic_file_direct_write(iocb, from);  in __generic_file_write_iter()
3426 		status = generic_perform_write(file, from, pos = iocb->ki_pos);  in __generic_file_write_iter()
3446 			iocb->ki_pos = endbyte + 1;  in __generic_file_write_iter()
3458 		written = generic_perform_write(file, from, iocb->ki_pos);  in __generic_file_write_iter()
3460 			iocb->ki_pos += written;  in __generic_file_write_iter()
3481 ssize_t generic_file_write_iter(struct kiocb *iocb, struct iov_iter *from)  in generic_file_write_iter()  argument
3483 	struct file *file = iocb->ki_filp;  in generic_file_write_iter()
3488 	ret = generic_write_checks(iocb, from);  in generic_file_write_iter()
3490 		ret = __generic_file_write_iter(iocb, from);  in generic_file_write_iter()
3494 		ret = generic_write_sync(iocb, ret);  in generic_file_write_iter()