BBSHIFT
#define XFBNO_BBSHIFT (XMBUF_BLOCKSHIFT - BBSHIFT)
#define XFBNO_BBSIZE (XFBNO_BLOCKSIZE >> BBSHIFT)
#define BBSIZE (1<<BBSHIFT)
#define BTOBB(bytes) (((__u64)(bytes) + BBSIZE - 1) >> BBSHIFT)
#define BTOBBT(bytes) ((__u64)(bytes) >> BBSHIFT)
#define BBTOB(bbs) ((bbs) << BBSHIFT)
mp->m_blkbb_log = sbp->sb_blocklog - BBSHIFT;
mp->m_sectbb_log = sbp->sb_sectlog - BBSHIFT;
btp->bt_nr_sectors = nr_blocks << (mp->m_sb.sb_blocklog - BBSHIFT);
return daddr < (inode->i_sb->s_maxbytes >> BBSHIFT);
if (log2_size < BBSHIFT) {
log2_size, BBSHIFT);
log2_size -= BBSHIFT;
for (i = 0; i < (log->l_iclog_hsize >> BBSHIFT) - 1; i++)
offset += ((num_blks - 1) << BBSHIFT);
ASSERT(sbp->sb_blocklog >= BBSHIFT);
mp->m_sb.sb_blocksize >> BBSHIFT, &bp,
BUILD_BUG_ON(BBSHIFT != SECTOR_SHIFT);