2149 			pte_t orig_pte, struct page *old_page)  in wp_page_copy()  argument
2170 		cow_user_page(new_page, old_page, address, vma);  in wp_page_copy()
2185 		if (old_page) {  in wp_page_copy()
2186 			if (!PageAnon(old_page)) {  in wp_page_copy()
2213 		if (old_page) {  in wp_page_copy()
2236 			page_remove_rmap(old_page);  in wp_page_copy()
2240 		new_page = old_page;  in wp_page_copy()
2251 	if (old_page) {  in wp_page_copy()
2257 			lock_page(old_page);	/* LRU manipulation */  in wp_page_copy()
2258 			munlock_vma_page(old_page);  in wp_page_copy()
2259 			unlock_page(old_page);  in wp_page_copy()
2261 		page_cache_release(old_page);  in wp_page_copy()
2267 	if (old_page)  in wp_page_copy()
2268 		page_cache_release(old_page);  in wp_page_copy()
2311 			  struct page *old_page)  in wp_page_shared()  argument
2316 	page_cache_get(old_page);  in wp_page_shared()
2327 		tmp = do_page_mkwrite(vma, old_page, address);  in wp_page_shared()
2330 			page_cache_release(old_page);  in wp_page_shared()
2342 			unlock_page(old_page);  in wp_page_shared()
2344 			page_cache_release(old_page);  in wp_page_shared()
2351 			     orig_pte, old_page, page_mkwrite, 1);  in wp_page_shared()
2377 	struct page *old_page;  in do_wp_page()  local
2379 	old_page = vm_normal_page(vma, address, orig_pte);  in do_wp_page()
2380 	if (!old_page) {  in do_wp_page()
2395 				    orig_pte, old_page);  in do_wp_page()
2402 	if (PageAnon(old_page) && !PageKsm(old_page)) {  in do_wp_page()
2403 		if (!trylock_page(old_page)) {  in do_wp_page()
2404 			page_cache_get(old_page);  in do_wp_page()
2406 			lock_page(old_page);  in do_wp_page()
2410 				unlock_page(old_page);  in do_wp_page()
2412 				page_cache_release(old_page);  in do_wp_page()
2415 			page_cache_release(old_page);  in do_wp_page()
2417 		if (reuse_swap_page(old_page)) {  in do_wp_page()
2423 			page_move_anon_rmap(old_page, vma, address);  in do_wp_page()
2424 			unlock_page(old_page);  in do_wp_page()
2426 					     orig_pte, old_page, 0, 0);  in do_wp_page()
2428 		unlock_page(old_page);  in do_wp_page()
2432 				      ptl, orig_pte, old_page);  in do_wp_page()
2438 	page_cache_get(old_page);  in do_wp_page()
2442 			    orig_pte, old_page);  in do_wp_page()