group_desc
typedef struct group_desc Group_desc;
int group_desc; /* fs pointer to that group */
group_desc = group_id >> log2 (EXT2_DESC_PER_BLOCK (SUPERBLOCK));
printf ("group_id=%d group_desc=%d desc=%d\n", group_id, group_desc, desc);
(WHICH_SUPER + group_desc + SUPERBLOCK->s_first_data_block),
struct group_desc *g;
struct group_desc groups[] = {