409 extern int add_to_swap_cache(struct page *, swp_entry_t, gfp_t);
410 extern int __add_to_swap_cache(struct page *page, swp_entry_t entry);
415 extern struct page *lookup_swap_cache(swp_entry_t entry,
418 extern struct page *read_swap_cache_async(swp_entry_t, gfp_t,
421 extern struct page *__read_swap_cache_async(swp_entry_t, gfp_t,
424 extern struct page *swap_cluster_readahead(swp_entry_t entry, gfp_t flag,
426 extern struct page *swapin_readahead(swp_entry_t entry, gfp_t flag,
447 extern swp_entry_t get_swap_page(struct page *page);
448 extern void put_swap_page(struct page *page, swp_entry_t entry);
449 extern swp_entry_t get_swap_page_of_type(int);
450 extern int get_swap_pages(int n, swp_entry_t swp_entries[], int entry_size);
451 extern int add_swap_count_continuation(swp_entry_t, gfp_t);
452 extern void swap_shmem_alloc(swp_entry_t);
453 extern int swap_duplicate(swp_entry_t);
454 extern int swapcache_prepare(swp_entry_t);
455 extern void swap_free(swp_entry_t);
456 extern void swapcache_free_entries(swp_entry_t *entries, int n);
457 extern int free_swap_and_cache(swp_entry_t);
463 extern int __swap_count(struct swap_info_struct *si, swp_entry_t entry);
464 extern int __swp_swapcount(swp_entry_t entry);
465 extern int swp_swapcount(swp_entry_t entry);
467 extern struct swap_info_struct *swp_swap_info(swp_entry_t entry);
481 static inline struct swap_info_struct *swp_swap_info(swp_entry_t entry)  in swp_swap_info()
508 static inline int add_swap_count_continuation(swp_entry_t swp, gfp_t gfp_mask)  in add_swap_count_continuation()
513 static inline void swap_shmem_alloc(swp_entry_t swp)  in swap_shmem_alloc()
517 static inline int swap_duplicate(swp_entry_t swp)  in swap_duplicate()
522 static inline void swap_free(swp_entry_t swp)  in swap_free()
526 static inline void put_swap_page(struct page *page, swp_entry_t swp)  in put_swap_page()
530 static inline struct page *swap_cluster_readahead(swp_entry_t entry,  in swap_cluster_readahead()
536 static inline struct page *swapin_readahead(swp_entry_t swp, gfp_t gfp_mask,  in swapin_readahead()
547 static inline struct page *lookup_swap_cache(swp_entry_t swp,  in lookup_swap_cache()
559 static inline int add_to_swap_cache(struct page *page, swp_entry_t entry,  in add_to_swap_cache()
578 static inline int __swap_count(struct swap_info_struct *si, swp_entry_t entry)  in __swap_count()
583 static inline int __swp_swapcount(swp_entry_t entry)  in __swp_swapcount()
588 static inline int swp_swapcount(swp_entry_t entry)  in swp_swapcount()
601 static inline swp_entry_t get_swap_page(struct page *page)  in get_swap_page()
603 	swp_entry_t entry;  in get_swap_page()
611 extern int split_swap_cluster(swp_entry_t entry);
613 static inline int split_swap_cluster(swp_entry_t entry)  in split_swap_cluster()
650 extern void mem_cgroup_swapout(struct page *page, swp_entry_t entry);
651 extern int mem_cgroup_try_charge_swap(struct page *page, swp_entry_t entry);
652 extern void mem_cgroup_uncharge_swap(swp_entry_t entry, unsigned int nr_pages);
656 static inline void mem_cgroup_swapout(struct page *page, swp_entry_t entry)  in mem_cgroup_swapout()
661 					     swp_entry_t entry)  in mem_cgroup_try_charge_swap()
666 static inline void mem_cgroup_uncharge_swap(swp_entry_t entry,  in mem_cgroup_uncharge_swap()