/* Same as get_index_page(), but get's a new page without reading  */
static struct metapage* get_index_page(struct inode *inode, s64 blkno)
/* Same as get_index_page(), but get's a new page without reading  */
static struct metapage* get_index_page(struct inode *inode, s64 blkno)
{
	int rc;
	s64 xaddr;
	int xflag;
	s32 xlen;
	rc = xtLookup(inode, blkno, 1, &xflag, &xaddr, &xlen, 1);
	if (rc || (xaddr == 0))
		return NULL;
	return get_metapage(inode, xaddr, PSIZE, 1);
}