lfs_lblktosize
if (lfs_lblktosize(fs, lbn) >= lfs_dino_getsize(fs, ip->i_din)) {
lfs_lblktosize((fs), lfs_sb_getssize(fs)) : \
if (lfs_lblktosize(fs, lbn) >= ip->i_size) {
eoz = MIN(lfs_lblktosize(fs, xlbn) + size, osize);
loff = lfs_lblktosize(fs, lbn);
if (lfs_lblktosize(fs, nextlbn) >= ip->i_size)