static daddr_t
ffs_bprev(struct fs *fs, struct inode *ip, daddr_t lbprev)
{
	if (fs->fs_magic == FS_UFS2_MAGIC)
		bprev = ufs_rw64(ip->i_ffs2_db[lbprev], UFS_FSNEEDSWAP(fs));
	else
		bprev = ufs_rw32(ip->i_ffs1_db[lbprev], UFS_FSNEEDSWAP(fs));
}
