On Mon, Jul 20, 2020 at 10:21:17PM +0900, Johannes Thumshirn wrote:

From: Damien Le Moal <redacted>

The res and res2 fields of struct io_event are signed 64 bits values
(__s64 type). Allow the ki_complete method of struct kiocb to set 64
bits values in these fields by changin its interface from the long type
to long long.

Which doesn't help if the consumers can't deal with these values.
But that shouldn't even be required for using zone append anyway..