rrpc_get_blk use constant 0 as the input parameter
of nvm_get_blk, this may result in getting gc block
failed unexpectedly.
Signed-off-by: NWenwei Tao <ww.tao0320@gmail.com>
Signed-off-by: NMatias Bjørling <m@bjorling.me>
Signed-off-by: NJens Axboe <axboe@fb.com>