pte_lock_deinit(page);
static void free_pte_range(struct mmu_gather *tlb, pmd_t *pmd){	struct page *page = pmd_page(*pmd);	pmd_clear(pmd);	pte_free_tlb(tlb, page);	dec_page_state(nr_page_table_pages);	tlb->mm->nr_ptes--;}