EXT4_MIN_BLOCK_LOG_SIZE
int cache_index = blocksize_bits - EXT4_MIN_BLOCK_LOG_SIZE;
int cache_index = blocksize_bits - EXT4_MIN_BLOCK_LOG_SIZE;
(EXT4_MAX_BLOCK_LOG_SIZE - EXT4_MIN_BLOCK_LOG_SIZE)) {
(EXT4_MAX_CLUSTER_LOG_SIZE - EXT4_MIN_BLOCK_LOG_SIZE)) {