Function ext3_group_first_block_no

Ext4Fsd/include/linux/ext4.h:3357–3362

calculate the first block number of the group */

/* calculate the first block number of the group */
static inline ext3_fsblk_t
ext3_group_first_block_no(struct super_block *sb, unsigned long group_no)
{
    return group_no * (ext3_fsblk_t)EXT3_BLOCKS_PER_GROUP(sb) +
           le32_to_cpu(EXT3_SB(sb)->s_es->s_first_data_block);
}

/*
 * Functions for metadata checksums in ext4_csum.c.