zstd_cctx_workspace_bound
sz = zstd_cctx_workspace_bound(&prm.cParams);
size_t zstd_cctx_workspace_bound(const zstd_compression_parameters *parameters);
EXPORT_SYMBOL(zstd_cctx_workspace_bound);
const size_t wksp_len = zstd_cctx_workspace_bound(¶ms.cParams);