1038 	struct page_vma_mapped_walk pvmw = {  in write_protect_page()  local
1046 	pvmw.address = page_address_in_vma(page, vma);  in write_protect_page()
1047 	if (pvmw.address == -EFAULT)  in write_protect_page()
1053 				pvmw.address,  in write_protect_page()
1054 				pvmw.address + PAGE_SIZE);  in write_protect_page()
1057 	if (!page_vma_mapped_walk(&pvmw))  in write_protect_page()
1059 	if (WARN_ONCE(!pvmw.pte, "Unexpected PMD mapping?"))  in write_protect_page()
1062 	if (pte_write(*pvmw.pte) || pte_dirty(*pvmw.pte) ||  in write_protect_page()
1063 	    (pte_protnone(*pvmw.pte) && pte_savedwrite(*pvmw.pte)) ||  in write_protect_page()
1068 		flush_cache_page(vma, pvmw.address, page_to_pfn(page));  in write_protect_page()
1083 		entry = ptep_clear_flush(vma, pvmw.address, pvmw.pte);  in write_protect_page()
1089 			set_pte_at(mm, pvmw.address, pvmw.pte, entry);  in write_protect_page()
1099 		set_pte_at_notify(mm, pvmw.address, pvmw.pte, entry);  in write_protect_page()
1101 	*orig_pte = *pvmw.pte;  in write_protect_page()
1105 	page_vma_mapped_walk_done(&pvmw);  in write_protect_page()