EXT4_BLOCK_SIZE 131 fs/ext4/ext4.h #define EXT4_ADDR_PER_BLOCK(s) (EXT4_BLOCK_SIZE(s) / sizeof(__u32)) EXT4_BLOCK_SIZE 206 fs/ext4/ext4.h # define EXT4_DESC_PER_BLOCK(s) (EXT4_BLOCK_SIZE(s) / EXT4_DESC_SIZE(s)) EXT4_BLOCK_SIZE 3837 fs/ext4/inode.c inodes_per_block = (EXT4_BLOCK_SIZE(sb) / EXT4_INODE_SIZE(sb));