AAC_BLOCK_SIZE
raw->BlockNumber = bio->bio_offset / AAC_BLOCK_SIZE;
br->BlockNumber = bio->bio_offset / AAC_BLOCK_SIZE;
bw->BlockNumber = bio->bio_offset / AAC_BLOCK_SIZE;
br->SectorCount = bp->b_bcount / AAC_BLOCK_SIZE;
br->BlockNumber = bio->bio_offset / AAC_BLOCK_SIZE;
bw->SectorCount = bp->b_bcount / AAC_BLOCK_SIZE;
bw->BlockNumber = bio->bio_offset / AAC_BLOCK_SIZE;
bw->BlockNumber = offset / AAC_BLOCK_SIZE;
bw->BlockNumber = offset / AAC_BLOCK_SIZE;
bw->SectorCount = len / AAC_BLOCK_SIZE;
(intmax_t)sc->ad_size / ((1024 * 1024) / AAC_BLOCK_SIZE),
AAC_BLOCK_SIZE, DEVSTAT_NO_ORDERED_TAGS,
info.d_media_blksize= AAC_BLOCK_SIZE; /* mandatory */