1099 	DEFINE_PAGE_VMA_WALK(pvmw, page, vma, 0, 0);  in write_protect_page()
1106 	pvmw.address = page_address_in_vma(page, vma);  in write_protect_page()
1107 	if (pvmw.address == -EFAULT)  in write_protect_page()
1112 	mmu_notifier_range_init(&range, MMU_NOTIFY_CLEAR, 0, mm, pvmw.address,  in write_protect_page()
1113 				pvmw.address + PAGE_SIZE);  in write_protect_page()
1116 	if (!page_vma_mapped_walk(&pvmw))  in write_protect_page()
1118 	if (WARN_ONCE(!pvmw.pte, "Unexpected PMD mapping?"))  in write_protect_page()
1122 	entry = ptep_get(pvmw.pte);  in write_protect_page()
1126 		flush_cache_page(vma, pvmw.address, page_to_pfn(page));  in write_protect_page()
1141 		entry = ptep_clear_flush(vma, pvmw.address, pvmw.pte);  in write_protect_page()
1147 			set_pte_at(mm, pvmw.address, pvmw.pte, entry);  in write_protect_page()
1153 			set_pte_at(mm, pvmw.address, pvmw.pte, entry);  in write_protect_page()
1164 		set_pte_at_notify(mm, pvmw.address, pvmw.pte, entry);  in write_protect_page()
1170 	page_vma_mapped_walk_done(&pvmw);  in write_protect_page()