tests/send: don't use a constant for page size

Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/e5807646ba3ad5a315630fc3dbc363fa6c8c4e0a.1676941370.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
1 file changed