zstd_get_params
params = zstd_get_params(ZSTD_DEF_LEVEL, ZSTD_MAX_SIZE);
prm = zstd_get_params(params->level, PAGE_SIZE);
zp->cprm = zstd_get_params(params->level, PAGE_SIZE);
zstd_parameters params = zstd_get_params(level, src_len);
params = zstd_get_params(level, cc->rlen);
zstd_parameters zstd_get_params(int level,
EXPORT_SYMBOL(zstd_get_params);
zstd_get_params(aa_g_rawdata_compression_level, slen);