first_group_block 2001 fs/ext4/mballoc.c ext4_fsblk_t first_group_block; first_group_block 2009 fs/ext4/mballoc.c first_group_block = ext4_group_first_block_no(sb, e4b->bd_group); first_group_block 2011 fs/ext4/mballoc.c a = first_group_block + sbi->s_stripe - 1; first_group_block 2013 fs/ext4/mballoc.c i = (a * sbi->s_stripe) - first_group_block;