Create common alloc/free fixed_rsrc_data routines for both files and
buffers.
Reviewed-by: NPavel Begunkov <asml.silence@gmail.com>
Signed-off-by: NBijan Mottahedeh <bijan.mottahedeh@oracle.com>
[remove buffer part]
Signed-off-by: NPavel Begunkov <asml.silence@gmail.com>
Signed-off-by: NJens Axboe <axboe@kernel.dk>