entropy_sum 1250 fs/btrfs/compression.c u32 entropy_sum = 0; entropy_sum 1258 fs/btrfs/compression.c entropy_sum += p * (sz_base - p_base); entropy_sum 1261 fs/btrfs/compression.c entropy_sum /= ws->sample_size; entropy_sum 1262 fs/btrfs/compression.c return entropy_sum * 100 / entropy_max;