test/zc: allocate buffers dynamically
test/zc: allocate buffers dynamically

A prep patch, allocate receive and transfer buffers dynamically.

Signed-off-by: Pavel Begunkov <8608d41fe50396a9dbd36e830be65ba791e26c05@gmail.com>
Link: https://lore.kernel.org/r/55d91cebef205ca8bf9c004980f36eca06dae966.1659622771.git.8608d41fe50396a9dbd36e830be65ba791e26c05@gmail.com
Signed-off-by: Jens Axboe <cd8c6775e60d6f67a6984377324e5290df3d5358@kernel.dk>

axboe/liburing,axboe/liburing,axboe/liburing