EXFAT_BLK_TO_B
es->num_entries = EXFAT_B_TO_DEN(EXFAT_BLK_TO_B(es->num_bh, es->sb) - es->start_off);
EXFAT_BLK_TO_B(blknr, sb),
EXFAT_BLK_TO_B(last_blknr, sb) - 1);
ei->valid_size = EXFAT_BLK_TO_B(iblock + max_blocks, sb);
pos = EXFAT_BLK_TO_B(iblock, sb);
bh_result->b_size = EXFAT_BLK_TO_B(max_blocks, sb);