2102 			pte_t orig_pte, struct page *old_page)  in wp_page_copy()  argument
2123 		cow_user_page(new_page, old_page, address, vma);  in wp_page_copy()
2138 		if (old_page) {  in wp_page_copy()
2139 			if (!PageAnon(old_page)) {  in wp_page_copy()
2166 		if (old_page) {  in wp_page_copy()
2189 			page_remove_rmap(old_page);  in wp_page_copy()
2193 		new_page = old_page;  in wp_page_copy()
2204 	if (old_page) {  in wp_page_copy()
2210 			lock_page(old_page);	/* LRU manipulation */  in wp_page_copy()
2211 			munlock_vma_page(old_page);  in wp_page_copy()
2212 			unlock_page(old_page);  in wp_page_copy()
2214 		page_cache_release(old_page);  in wp_page_copy()
2220 	if (old_page)  in wp_page_copy()
2221 		page_cache_release(old_page);  in wp_page_copy()
2264 			  struct page *old_page)  in wp_page_shared()  argument
2269 	page_cache_get(old_page);  in wp_page_shared()
2280 		tmp = do_page_mkwrite(vma, old_page, address);  in wp_page_shared()
2283 			page_cache_release(old_page);  in wp_page_shared()
2295 			unlock_page(old_page);  in wp_page_shared()
2297 			page_cache_release(old_page);  in wp_page_shared()
2304 			     orig_pte, old_page, page_mkwrite, 1);  in wp_page_shared()
2330 	struct page *old_page;  in do_wp_page()  local
2332 	old_page = vm_normal_page(vma, address, orig_pte);  in do_wp_page()
2333 	if (!old_page) {  in do_wp_page()
2348 				    orig_pte, old_page);  in do_wp_page()
2355 	if (PageAnon(old_page) && !PageKsm(old_page)) {  in do_wp_page()
2356 		if (!trylock_page(old_page)) {  in do_wp_page()
2357 			page_cache_get(old_page);  in do_wp_page()
2359 			lock_page(old_page);  in do_wp_page()
2363 				unlock_page(old_page);  in do_wp_page()
2365 				page_cache_release(old_page);  in do_wp_page()
2368 			page_cache_release(old_page);  in do_wp_page()
2370 		if (reuse_swap_page(old_page)) {  in do_wp_page()
2376 			page_move_anon_rmap(old_page, vma, address);  in do_wp_page()
2377 			unlock_page(old_page);  in do_wp_page()
2379 					     orig_pte, old_page, 0, 0);  in do_wp_page()
2381 		unlock_page(old_page);  in do_wp_page()
2385 				      ptl, orig_pte, old_page);  in do_wp_page()
2391 	page_cache_get(old_page);  in do_wp_page()
2395 			    orig_pte, old_page);  in do_wp_page()