pc_lblkno
error = pc_bmap(pcp, pc_lblkno(fsp, offset), &bn, NULL);
pc_lblkno(fsp, offset), 1, &bn);
pc_cltodb(fsp, pc_lblkno(fsp, off)));
if (!pc_fat_is_changed(fsp, pc_lblkno(fsp, off))) {
pc_cltodb(fsp, pc_lblkno(fsp, off)));
bn = pc_lblkno(fsp, cn * size);
bn = pc_lblkno(fsp, cn * size);
bn = pc_lblkno(fsp, off);
nbn = pc_lblkno(fsp, off + 1);
pc_cltodb(fsp, pc_lblkno(fsp, off)));
lbn = pc_lblkno(fsp, off);
lbn = pc_lblkno(fsp, io_off);
lcn = pc_lblkno(fsp, uio->uio_loffset);
(daddr_t)pc_lblkno(fsp,