2189 ssize_t generic_file_buffered_read(struct kiocb *iocb,  in generic_file_buffered_read()  argument
2192 	struct file *filp = iocb->ki_filp;  in generic_file_buffered_read()
2196 	loff_t *ppos = &iocb->ki_pos;  in generic_file_buffered_read()
2219 	if (written && (iocb->ki_flags & IOCB_WAITQ))  in generic_file_buffered_read()
2220 		iocb->ki_flags |= IOCB_NOWAIT;  in generic_file_buffered_read()
2237 			if (iocb->ki_flags & IOCB_NOIO)  in generic_file_buffered_read()
2247 			if (iocb->ki_flags & IOCB_NOIO) {  in generic_file_buffered_read()
2261 			if (iocb->ki_flags & IOCB_WAITQ) {  in generic_file_buffered_read()
2267 								iocb->ki_waitq);  in generic_file_buffered_read()
2269 				if (iocb->ki_flags & IOCB_NOWAIT) {  in generic_file_buffered_read()
2362 		if (iocb->ki_flags & IOCB_WAITQ) {  in generic_file_buffered_read()
2367 			error = lock_page_async(page, iocb->ki_waitq);  in generic_file_buffered_read()
2389 		if (iocb->ki_flags & (IOCB_NOIO | IOCB_NOWAIT)) {  in generic_file_buffered_read()
2413 			if (iocb->ki_flags & IOCB_WAITQ) {  in generic_file_buffered_read()
2418 				error = lock_page_async(page, iocb->ki_waitq);  in generic_file_buffered_read()
2507 generic_file_read_iter(struct kiocb *iocb, struct iov_iter *iter)  in generic_file_read_iter()  argument
2515 	if (iocb->ki_flags & IOCB_DIRECT) {  in generic_file_read_iter()
2516 		struct file *file = iocb->ki_filp;  in generic_file_read_iter()
2522 		if (iocb->ki_flags & IOCB_NOWAIT) {  in generic_file_read_iter()
2523 			if (filemap_range_has_page(mapping, iocb->ki_pos,  in generic_file_read_iter()
2524 						   iocb->ki_pos + count - 1))  in generic_file_read_iter()
2528 						iocb->ki_pos,  in generic_file_read_iter()
2529 					        iocb->ki_pos + count - 1);  in generic_file_read_iter()
2536 		retval = mapping->a_ops->direct_IO(iocb, iter);  in generic_file_read_iter()
2538 			iocb->ki_pos += retval;  in generic_file_read_iter()
2552 		if (retval < 0 || !count || iocb->ki_pos >= size ||  in generic_file_read_iter()
2557 	retval = generic_file_buffered_read(iocb, iter, retval);  in generic_file_read_iter()
3189 generic_file_direct_write(struct kiocb *iocb, struct iov_iter *from)  in generic_file_direct_write()  argument
3191 	struct file	*file = iocb->ki_filp;  in generic_file_direct_write()
3194 	loff_t		pos = iocb->ki_pos;  in generic_file_direct_write()
3202 	if (iocb->ki_flags & IOCB_NOWAIT) {  in generic_file_direct_write()
3232 	written = mapping->a_ops->direct_IO(iocb, from);  in generic_file_direct_write()
3262 		iocb->ki_pos = pos;  in generic_file_direct_write()
3397 ssize_t __generic_file_write_iter(struct kiocb *iocb, struct iov_iter *from)  in __generic_file_write_iter()  argument
3399 	struct file *file = iocb->ki_filp;  in __generic_file_write_iter()
3416 	if (iocb->ki_flags & IOCB_DIRECT) {  in __generic_file_write_iter()
3419 		written = generic_file_direct_write(iocb, from);  in __generic_file_write_iter()
3430 		status = generic_perform_write(file, from, pos = iocb->ki_pos);  in __generic_file_write_iter()
3450 			iocb->ki_pos = endbyte + 1;  in __generic_file_write_iter()
3462 		written = generic_perform_write(file, from, iocb->ki_pos);  in __generic_file_write_iter()
3464 			iocb->ki_pos += written;  in __generic_file_write_iter()
3485 ssize_t generic_file_write_iter(struct kiocb *iocb, struct iov_iter *from)  in generic_file_write_iter()  argument
3487 	struct file *file = iocb->ki_filp;  in generic_file_write_iter()
3492 	ret = generic_write_checks(iocb, from);  in generic_file_write_iter()
3494 		ret = __generic_file_write_iter(iocb, from);  in generic_file_write_iter()
3498 		ret = generic_write_sync(iocb, ret);  in generic_file_write_iter()