48 static bool swap_count_continued(struct swap_info_struct *, pgoff_t,
50 static void free_swap_count_continuations(struct swap_info_struct *);
92 struct swap_info_struct *swap_info[MAX_SWAPFILES];
102 static struct swap_info_struct *swap_type_to_swap_info(int type)  in swap_type_to_swap_info()
127 static int __try_to_reclaim_swap(struct swap_info_struct *si,  in __try_to_reclaim_swap()
155 static inline struct swap_extent *first_se(struct swap_info_struct *sis)  in first_se()
171 static int discard_swap(struct swap_info_struct *si)  in discard_swap()
205 offset_to_swap_extent(struct swap_info_struct *sis, unsigned long offset)  in offset_to_swap_extent()
228 static void discard_swap_cluster(struct swap_info_struct *si,  in discard_swap_cluster()
338 static inline struct swap_cluster_info *lock_cluster(struct swap_info_struct *si,  in lock_cluster()
362 		struct swap_info_struct *si, unsigned long offset)  in lock_cluster_or_swap_info()
375 static inline void unlock_cluster_or_swap_info(struct swap_info_struct *si,  in unlock_cluster_or_swap_info()
440 static void swap_cluster_schedule_discard(struct swap_info_struct *si,  in swap_cluster_schedule_discard()
457 static void __free_cluster(struct swap_info_struct *si, unsigned long idx)  in __free_cluster()
469 static void swap_do_scheduled_discard(struct swap_info_struct *si)  in swap_do_scheduled_discard()
494 	struct swap_info_struct *si;  in swap_discard_work()
496 	si = container_of(work, struct swap_info_struct, discard_work);  in swap_discard_work()
503 static void alloc_cluster(struct swap_info_struct *si, unsigned long idx)  in alloc_cluster()
512 static void free_cluster(struct swap_info_struct *si, unsigned long idx)  in free_cluster()
535 static void inc_cluster_info_page(struct swap_info_struct *p,  in inc_cluster_info_page()
555 static void dec_cluster_info_page(struct swap_info_struct *p,  in dec_cluster_info_page()
576 scan_swap_map_ssd_cluster_conflict(struct swap_info_struct *si,  in scan_swap_map_ssd_cluster_conflict()
599 static bool scan_swap_map_try_ssd_cluster(struct swap_info_struct *si,  in scan_swap_map_try_ssd_cluster()
658 static void __del_from_avail_list(struct swap_info_struct *p)  in __del_from_avail_list()
666 static void del_from_avail_list(struct swap_info_struct *p)  in del_from_avail_list()
673 static void swap_range_alloc(struct swap_info_struct *si, unsigned long offset,  in swap_range_alloc()
690 static void add_to_avail_list(struct swap_info_struct *p)  in add_to_avail_list()
702 static void swap_range_free(struct swap_info_struct *si, unsigned long offset,  in swap_range_free()
732 static int scan_swap_map_slots(struct swap_info_struct *si,  in scan_swap_map_slots()
929 static int swap_alloc_cluster(struct swap_info_struct *si, swp_entry_t *slot)  in swap_alloc_cluster()
964 static void swap_free_cluster(struct swap_info_struct *si, unsigned long idx)  in swap_free_cluster()
977 static unsigned long scan_swap_map(struct swap_info_struct *si,  in scan_swap_map()
995 	struct swap_info_struct *si, *next;  in get_swap_pages()
1082 	struct swap_info_struct *si = swap_type_to_swap_info(type);  in get_swap_page_of_type()
1104 static struct swap_info_struct *__swap_info_get(swp_entry_t entry)  in __swap_info_get()
1106 	struct swap_info_struct *p;  in __swap_info_get()
1133 static struct swap_info_struct *_swap_info_get(swp_entry_t entry)  in _swap_info_get()
1135 	struct swap_info_struct *p;  in _swap_info_get()
1151 static struct swap_info_struct *swap_info_get(swp_entry_t entry)  in swap_info_get()
1153 	struct swap_info_struct *p;  in swap_info_get()
1161 static struct swap_info_struct *swap_info_get_cont(swp_entry_t entry,  in swap_info_get_cont()
1162 					struct swap_info_struct *q)  in swap_info_get_cont()
1164 	struct swap_info_struct *p;  in swap_info_get_cont()
1177 static unsigned char __swap_entry_free_locked(struct swap_info_struct *p,  in __swap_entry_free_locked()
1249 struct swap_info_struct *get_swap_device(swp_entry_t entry)  in get_swap_device()
1251 	struct swap_info_struct *si;  in get_swap_device()
1277 static unsigned char __swap_entry_free(struct swap_info_struct *p,  in __swap_entry_free()
1292 static void swap_entry_free(struct swap_info_struct *p, swp_entry_t entry)  in swap_entry_free()
1315 	struct swap_info_struct *p;  in swap_free()
1330 	struct swap_info_struct *si;  in put_swap_page()
1375 	struct swap_info_struct *si;  in split_swap_cluster()
1398 	struct swap_info_struct *p, *prev;  in swapcache_free_entries()
1432 	struct swap_info_struct *p;  in page_swapcount()
1450 	struct swap_info_struct *si;  in __swap_count()
1462 static int swap_swapcount(struct swap_info_struct *si, swp_entry_t entry)  in swap_swapcount()
1482 	struct swap_info_struct *si;  in __swp_swapcount()
1499 	struct swap_info_struct *p;  in swp_swapcount()
1538 static bool swap_page_trans_huge_swapped(struct swap_info_struct *si,  in swap_page_trans_huge_swapped()
1568 	struct swap_info_struct *si;  in page_swapped()
1586 	struct swap_info_struct *si;  in page_trans_huge_map_swapcount()
1674 			struct swap_info_struct *p;  in reuse_swap_page()
1734 	struct swap_info_struct *p;  in free_swap_and_cache()
1770 		struct swap_info_struct *sis = swap_info[type];  in swap_type_of()
1809 	struct swap_info_struct *si = swap_type_to_swap_info(type);  in swapdev_block()
1828 		struct swap_info_struct *sis = swap_info[type];  in count_swap_pages()
1917 	struct swap_info_struct *si;  in unuse_pte_range()
2092 static unsigned int find_next_to_unuse(struct swap_info_struct *si,  in find_next_to_unuse()
2130 	struct swap_info_struct *si = swap_info[type];  in try_to_unuse()
2259 	struct swap_info_struct *sis;  in map_swap_entry()
2284 static void destroy_swap_extents(struct swap_info_struct *sis)  in destroy_swap_extents()
2311 add_swap_extent(struct swap_info_struct *sis, unsigned long start_page,  in add_swap_extent()
2381 static int setup_swap_extents(struct swap_info_struct *sis, sector_t *span)  in setup_swap_extents()
2409 static int swap_node(struct swap_info_struct *p)  in swap_node()
2421 static void setup_swap_info(struct swap_info_struct *p, int prio,  in setup_swap_info()
2450 static void _enable_swap_info(struct swap_info_struct *p)  in _enable_swap_info()
2471 static void enable_swap_info(struct swap_info_struct *p, int prio,  in enable_swap_info()
2494 static void reinsert_swap_info(struct swap_info_struct *p)  in reinsert_swap_info()
2517 	struct swap_info_struct *p = NULL;  in SYSCALL_DEFINE1()
2567 		struct swap_info_struct *si = p;  in SYSCALL_DEFINE1()
2711 	struct swap_info_struct *si;  in swap_start()
2732 	struct swap_info_struct *si = v;  in swap_next()
2757 	struct swap_info_struct *si = v;  in swap_show()
2824 static struct swap_info_struct *alloc_swap_info(void)  in alloc_swap_info()
2826 	struct swap_info_struct *p;  in alloc_swap_info()
2874 static int claim_swapfile(struct swap_info_struct *p, struct inode *inode)  in claim_swapfile()
2931 static unsigned long read_swap_header(struct swap_info_struct *p,  in read_swap_header()
3007 static int setup_swap_map_and_extents(struct swap_info_struct *p,  in setup_swap_map_and_extents()
3092 static bool swap_discardable(struct swap_info_struct *si)  in swap_discardable()
3104 	struct swap_info_struct *p;  in SYSCALL_DEFINE2()
3357 		struct swap_info_struct *si = swap_info[type];  in si_swapinfo()
3380 	struct swap_info_struct *p;  in __swap_duplicate()
3480 struct swap_info_struct *swp_swap_info(swp_entry_t entry)  in swp_swap_info()
3485 struct swap_info_struct *page_swap_info(struct page *page)  in page_swap_info()
3524 	struct swap_info_struct *si;  in add_swap_count_continuation()
3634 static bool swap_count_continued(struct swap_info_struct *si,  in swap_count_continued()
3722 static void free_swap_count_continuations(struct swap_info_struct *si)  in free_swap_count_continuations()
3744 	struct swap_info_struct *si, *next;  in mem_cgroup_throttle_swaprate()