24 static int swap_writepage(struct page *page)  in swap_writepage()  argument
26 	if (remove_exclusive_swap_page(page)) {  in swap_writepage()
27 		UnlockPage(page);  in swap_writepage()
30 	rw_swap_page(WRITE, page);  in swap_writepage()
70 int add_to_swap_cache(struct page *page, swp_entry_t entry)  in add_to_swap_cache()  argument
72 	if (page->mapping)  in add_to_swap_cache()
78 	if (add_to_page_cache_unique(page, &swapper_space, entry.val,  in add_to_swap_cache()
84 	if (!PageLocked(page))  in add_to_swap_cache()
86 	if (!PageSwapCache(page))  in add_to_swap_cache()
96 void __delete_from_swap_cache(struct page *page)  in __delete_from_swap_cache()  argument
98 	if (!PageLocked(page))  in __delete_from_swap_cache()
100 	if (!PageSwapCache(page))  in __delete_from_swap_cache()
102 	ClearPageDirty(page);  in __delete_from_swap_cache()
103 	__remove_inode_page(page);  in __delete_from_swap_cache()
113 void delete_from_swap_cache(struct page *page)  in delete_from_swap_cache()  argument
117 	if (!PageLocked(page))  in delete_from_swap_cache()
120 	if (unlikely(!block_flushpage(page, 0)))  in delete_from_swap_cache()
123 	entry.val = page->index;  in delete_from_swap_cache()
126 	__delete_from_swap_cache(page);  in delete_from_swap_cache()
130 	page_cache_release(page);  in delete_from_swap_cache()
138 void free_page_and_swap_cache(struct page *page)  in free_page_and_swap_cache()  argument
148 	if (PageSwapCache(page) && !TryLockPage(page)) {  in free_page_and_swap_cache()
149 		remove_exclusive_swap_page(page);  in free_page_and_swap_cache()
150 		UnlockPage(page);  in free_page_and_swap_cache()
152 	page_cache_release(page);  in free_page_and_swap_cache()
161 struct page * lookup_swap_cache(swp_entry_t entry)  in lookup_swap_cache()
163 	struct page *found;  in lookup_swap_cache()
184 struct page * read_swap_cache_async(swp_entry_t entry)  in read_swap_cache_async()
186 	struct page *found_page, *new_page = NULL;  in read_swap_cache_async()