411 extern int add_to_swap_cache(struct page *, swp_entry_t, gfp_t);
412 extern int __add_to_swap_cache(struct page *page, swp_entry_t entry);
413 extern void __delete_from_swap_cache(struct page *, swp_entry_t entry);
417 extern struct page *lookup_swap_cache(swp_entry_t entry,
420 extern struct page *read_swap_cache_async(swp_entry_t, gfp_t,
423 extern struct page *__read_swap_cache_async(swp_entry_t, gfp_t,
426 extern struct page *swap_cluster_readahead(swp_entry_t entry, gfp_t flag,
428 extern struct page *swapin_readahead(swp_entry_t entry, gfp_t flag,
449 extern swp_entry_t get_swap_page(struct page *page);
450 extern void put_swap_page(struct page *page, swp_entry_t entry);
451 extern swp_entry_t get_swap_page_of_type(int);
452 extern int get_swap_pages(int n, swp_entry_t swp_entries[], int entry_size);
453 extern int add_swap_count_continuation(swp_entry_t, gfp_t);
454 extern void swap_shmem_alloc(swp_entry_t);
455 extern int swap_duplicate(swp_entry_t);
456 extern int swapcache_prepare(swp_entry_t);
457 extern void swap_free(swp_entry_t);
458 extern void swapcache_free_entries(swp_entry_t *entries, int n);
459 extern int free_swap_and_cache(swp_entry_t);
465 extern int __swap_count(swp_entry_t entry);
466 extern int __swp_swapcount(swp_entry_t entry);
467 extern int swp_swapcount(swp_entry_t entry);
469 extern struct swap_info_struct *swp_swap_info(swp_entry_t entry);
475 extern struct swap_info_struct *get_swap_device(swp_entry_t entry);
489 static inline struct swap_info_struct *swp_swap_info(swp_entry_t entry)  in swp_swap_info()
516 static inline int add_swap_count_continuation(swp_entry_t swp, gfp_t gfp_mask)  in add_swap_count_continuation()
521 static inline void swap_shmem_alloc(swp_entry_t swp)  in swap_shmem_alloc()
525 static inline int swap_duplicate(swp_entry_t swp)  in swap_duplicate()
530 static inline void swap_free(swp_entry_t swp)  in swap_free()
534 static inline void put_swap_page(struct page *page, swp_entry_t swp)  in put_swap_page()
538 static inline struct page *swap_cluster_readahead(swp_entry_t entry,  in swap_cluster_readahead()
544 static inline struct page *swapin_readahead(swp_entry_t swp, gfp_t gfp_mask,  in swapin_readahead()
555 static inline struct page *lookup_swap_cache(swp_entry_t swp,  in lookup_swap_cache()
567 static inline int add_to_swap_cache(struct page *page, swp_entry_t entry,  in add_to_swap_cache()
574 							swp_entry_t entry)  in __delete_from_swap_cache()
587 static inline int __swap_count(swp_entry_t entry)  in __swap_count()
592 static inline int __swp_swapcount(swp_entry_t entry)  in __swp_swapcount()
597 static inline int swp_swapcount(swp_entry_t entry)  in swp_swapcount()
610 static inline swp_entry_t get_swap_page(struct page *page)  in get_swap_page()
612 	swp_entry_t entry;  in get_swap_page()
620 extern int split_swap_cluster(swp_entry_t entry);
622 static inline int split_swap_cluster(swp_entry_t entry)  in split_swap_cluster()
659 extern void mem_cgroup_swapout(struct page *page, swp_entry_t entry);
660 extern int mem_cgroup_try_charge_swap(struct page *page, swp_entry_t entry);
661 extern void mem_cgroup_uncharge_swap(swp_entry_t entry, unsigned int nr_pages);
665 static inline void mem_cgroup_swapout(struct page *page, swp_entry_t entry)  in mem_cgroup_swapout()
670 					     swp_entry_t entry)  in mem_cgroup_try_charge_swap()
675 static inline void mem_cgroup_uncharge_swap(swp_entry_t entry,  in mem_cgroup_uncharge_swap()