2009 static ssize_t generic_file_buffered_read(struct kiocb *iocb,  in generic_file_buffered_read()  argument
2012 	struct file *filp = iocb->ki_filp;  in generic_file_buffered_read()
2016 	loff_t *ppos = &iocb->ki_pos;  in generic_file_buffered_read()
2049 			if (iocb->ki_flags & IOCB_NOWAIT)  in generic_file_buffered_read()
2064 			if (iocb->ki_flags & IOCB_NOWAIT) {  in generic_file_buffered_read()
2274 generic_file_read_iter(struct kiocb *iocb, struct iov_iter *iter)  in generic_file_read_iter()  argument
2282 	if (iocb->ki_flags & IOCB_DIRECT) {  in generic_file_read_iter()
2283 		struct file *file = iocb->ki_filp;  in generic_file_read_iter()
2289 		if (iocb->ki_flags & IOCB_NOWAIT) {  in generic_file_read_iter()
2290 			if (filemap_range_has_page(mapping, iocb->ki_pos,  in generic_file_read_iter()
2291 						   iocb->ki_pos + count - 1))  in generic_file_read_iter()
2295 						iocb->ki_pos,  in generic_file_read_iter()
2296 					        iocb->ki_pos + count - 1);  in generic_file_read_iter()
2303 		retval = mapping->a_ops->direct_IO(iocb, iter);  in generic_file_read_iter()
2305 			iocb->ki_pos += retval;  in generic_file_read_iter()
2319 		if (retval < 0 || !count || iocb->ki_pos >= size ||  in generic_file_read_iter()
2324 	retval = generic_file_buffered_read(iocb, iter, retval);  in generic_file_read_iter()
2959 inline ssize_t generic_write_checks(struct kiocb *iocb, struct iov_iter *from)  in generic_write_checks()  argument
2961 	struct file *file = iocb->ki_filp;  in generic_write_checks()
2973 	if (iocb->ki_flags & IOCB_APPEND)  in generic_write_checks()
2974 		iocb->ki_pos = i_size_read(inode);  in generic_write_checks()
2976 	if ((iocb->ki_flags & IOCB_NOWAIT) && !(iocb->ki_flags & IOCB_DIRECT))  in generic_write_checks()
2980 	ret = generic_write_check_limits(file, iocb->ki_pos, &count);  in generic_write_checks()
3165 generic_file_direct_write(struct kiocb *iocb, struct iov_iter *from)  in generic_file_direct_write()  argument
3167 	struct file	*file = iocb->ki_filp;  in generic_file_direct_write()
3170 	loff_t		pos = iocb->ki_pos;  in generic_file_direct_write()
3178 	if (iocb->ki_flags & IOCB_NOWAIT) {  in generic_file_direct_write()
3208 	written = mapping->a_ops->direct_IO(iocb, from);  in generic_file_direct_write()
3234 		iocb->ki_pos = pos;  in generic_file_direct_write()
3369 ssize_t __generic_file_write_iter(struct kiocb *iocb, struct iov_iter *from)  in __generic_file_write_iter()  argument
3371 	struct file *file = iocb->ki_filp;  in __generic_file_write_iter()
3388 	if (iocb->ki_flags & IOCB_DIRECT) {  in __generic_file_write_iter()
3391 		written = generic_file_direct_write(iocb, from);  in __generic_file_write_iter()
3402 		status = generic_perform_write(file, from, pos = iocb->ki_pos);  in __generic_file_write_iter()
3422 			iocb->ki_pos = endbyte + 1;  in __generic_file_write_iter()
3434 		written = generic_perform_write(file, from, iocb->ki_pos);  in __generic_file_write_iter()
3436 			iocb->ki_pos += written;  in __generic_file_write_iter()
3457 ssize_t generic_file_write_iter(struct kiocb *iocb, struct iov_iter *from)  in generic_file_write_iter()  argument
3459 	struct file *file = iocb->ki_filp;  in generic_file_write_iter()
3464 	ret = generic_write_checks(iocb, from);  in generic_file_write_iter()
3466 		ret = __generic_file_write_iter(iocb, from);  in generic_file_write_iter()
3470 		ret = generic_write_sync(iocb, ret);  in generic_file_write_iter()