__getblk
bh = __getblk(journal->j_dev, pblock, journal->j_blocksize);
bh = __getblk(journal->j_dev, blocknr, journal->j_blocksize);
bh = __getblk(journal->j_dev, blocknr, journal->j_blocksize);
nbh = __getblk(journal->j_fs_dev, blocknr,
bh = __getblk(journal->j_dev, blocknr, journal->j_blocksize);
bh = __getblk(nilfs->ns_bdev, ri->ri_lsegs_start, nilfs->ns_blocksize);
bh = __getblk(bdev, block, blocksize);
return __getblk(sb->s_bdev, block, sb->s_blocksize);