The values returned are a bit confusing, where 0 and 1 have implied
meaning, so add some definitions for them.
Signed-off-by: NDylan Yudaken <dylany@fb.com>
Link: https://lore.kernel.org/r/20220630091231.1456789-6-dylany@fb.comSigned-off-by: NJens Axboe <axboe@kernel.dk>