162 static inline void __mm_zero_struct_page(struct page *page)  in __mm_zero_struct_page()  argument
164 	unsigned long *_pp = (void *)page;  in __mm_zero_struct_page()
167 	BUILD_BUG_ON(sizeof(struct page) & 7);  in __mm_zero_struct_page()
168 	BUILD_BUG_ON(sizeof(struct page) < 56);  in __mm_zero_struct_page()
169 	BUILD_BUG_ON(sizeof(struct page) > 80);  in __mm_zero_struct_page()
171 	switch (sizeof(struct page)) {  in __mm_zero_struct_page()
192 #define mm_zero_struct_page(pp)  ((void)memset((pp), 0, sizeof(struct page)))
230 #define nth_page(page,n) pfn_to_page(page_to_pfn((page)) + (n))  argument
238 #define lru_to_page(head) (list_entry((head)->prev, struct page, lru))
548 	struct page *cow_page;		/* Page handler may use for COW fault */
549 	struct page *page;		/* ->fault handlers should return a  member
649 	struct page *(*find_special_page)(struct vm_area_struct *vma,
757 static inline int put_page_testzero(struct page *page)  in put_page_testzero()  argument
761 	VM_BUG_ON_PAGE(page_ref_count(page) == 0, page);  in put_page_testzero()
762 	ret = page_ref_dec_and_test(page);  in put_page_testzero()
763 	page_pinner_put_page(page);  in put_page_testzero()
774 static inline int get_page_unless_zero(struct page *page)  in get_page_unless_zero()  argument
776 	return page_ref_add_unless(page, 1, 0);  in get_page_unless_zero()
791 struct page *vmalloc_to_page(const void *addr);
853 static inline int head_compound_mapcount(struct page *head)  in head_compound_mapcount()
863 static inline int compound_mapcount(struct page *page)  in compound_mapcount()  argument
865 	VM_BUG_ON_PAGE(!PageCompound(page), page);  in compound_mapcount()
866 	page = compound_head(page);  in compound_mapcount()
867 	return head_compound_mapcount(page);  in compound_mapcount()
875 static inline void page_mapcount_reset(struct page *page)  in page_mapcount_reset()  argument
877 	atomic_set(&(page)->_mapcount, -1);  in page_mapcount_reset()
880 int __page_mapcount(struct page *page);
890 static inline int page_mapcount(struct page *page)  in page_mapcount()  argument
892 	if (unlikely(PageCompound(page)))  in page_mapcount()
893 		return __page_mapcount(page);  in page_mapcount()
894 	return atomic_read(&page->_mapcount) + 1;  in page_mapcount()
898 int total_mapcount(struct page *page);
899 int page_trans_huge_mapcount(struct page *page, int *total_mapcount);
901 static inline int total_mapcount(struct page *page)  in total_mapcount()  argument
903 	return page_mapcount(page);  in total_mapcount()
905 static inline int page_trans_huge_mapcount(struct page *page,  in page_trans_huge_mapcount()  argument
908 	int mapcount = page_mapcount(page);  in page_trans_huge_mapcount()
915 static inline struct page *virt_to_head_page(const void *x)  in virt_to_head_page()
917 	struct page *page = virt_to_page(x);  in virt_to_head_page()  local
919 	return compound_head(page);  in virt_to_head_page()
922 void __put_page(struct page *page);
926 void split_page(struct page *page, unsigned int order);
933 typedef void compound_page_dtor(struct page *);
949 static inline void set_compound_page_dtor(struct page *page,  in set_compound_page_dtor()  argument
952 	VM_BUG_ON_PAGE(compound_dtor >= NR_COMPOUND_DTORS, page);  in set_compound_page_dtor()
953 	page[1].compound_dtor = compound_dtor;  in set_compound_page_dtor()
956 static inline void destroy_compound_page(struct page *page)  in destroy_compound_page()  argument
958 	VM_BUG_ON_PAGE(page[1].compound_dtor >= NR_COMPOUND_DTORS, page);  in destroy_compound_page()
959 	compound_page_dtors[page[1].compound_dtor](page);  in destroy_compound_page()
962 static inline unsigned int compound_order(struct page *page)  in compound_order()  argument
964 	if (!PageHead(page))  in compound_order()
966 	return page[1].compound_order;  in compound_order()
969 static inline bool hpage_pincount_available(struct page *page)  in hpage_pincount_available()  argument
976 	page = compound_head(page);  in hpage_pincount_available()
977 	return PageCompound(page) && compound_order(page) > 1;  in hpage_pincount_available()
980 static inline int head_compound_pincount(struct page *head)  in head_compound_pincount()
985 static inline int compound_pincount(struct page *page)  in compound_pincount()  argument
987 	VM_BUG_ON_PAGE(!hpage_pincount_available(page), page);  in compound_pincount()
988 	page = compound_head(page);  in compound_pincount()
989 	return head_compound_pincount(page);  in compound_pincount()
992 static inline void set_compound_order(struct page *page, unsigned int order)  in set_compound_order()  argument
994 	page[1].compound_order = order;  in set_compound_order()
995 	page[1].compound_nr = 1U << order;  in set_compound_order()
999 static inline unsigned long compound_nr(struct page *page)  in compound_nr()  argument
1001 	if (!PageHead(page))  in compound_nr()
1003 	return page[1].compound_nr;  in compound_nr()
1007 static inline unsigned long page_size(struct page *page)  in page_size()  argument
1009 	return PAGE_SIZE << compound_order(page);  in page_size()
1013 static inline unsigned int page_shift(struct page *page)  in page_shift()  argument
1015 	return PAGE_SHIFT + compound_order(page);  in page_shift()
1018 void free_compound_page(struct page *page);
1034 vm_fault_t do_set_pmd(struct vm_fault *vmf, struct page *page);
1035 void do_set_pte(struct vm_fault *vmf, struct page *page, unsigned long addr);
1144 static inline enum zone_type page_zonenum(const struct page *page)  in page_zonenum()  argument
1146 	ASSERT_EXCLUSIVE_BITS(page->flags, ZONES_MASK << ZONES_PGSHIFT);  in page_zonenum()
1147 	return (page->flags >> ZONES_PGSHIFT) & ZONES_MASK;  in page_zonenum()
1151 static inline bool is_zone_device_page(const struct page *page)  in is_zone_device_page()  argument
1153 	return page_zonenum(page) == ZONE_DEVICE;  in is_zone_device_page()
1158 static inline bool is_zone_device_page(const struct page *page)  in is_zone_device_page()  argument
1165 void free_devmap_managed_page(struct page *page);
1168 static inline bool page_is_devmap_managed(struct page *page)  in page_is_devmap_managed()  argument
1172 	if (!is_zone_device_page(page))  in page_is_devmap_managed()
1174 	switch (page->pgmap->type) {  in page_is_devmap_managed()
1184 void put_devmap_managed_page(struct page *page);
1187 static inline bool page_is_devmap_managed(struct page *page)  in page_is_devmap_managed()  argument
1192 static inline void put_devmap_managed_page(struct page *page)  in put_devmap_managed_page()  argument
1197 static inline bool is_device_private_page(const struct page *page)  in is_device_private_page()  argument
1201 		is_zone_device_page(page) &&  in is_device_private_page()
1202 		page->pgmap->type == MEMORY_DEVICE_PRIVATE;  in is_device_private_page()
1205 static inline bool is_pci_p2pdma_page(const struct page *page)  in is_pci_p2pdma_page()  argument
1209 		is_zone_device_page(page) &&  in is_pci_p2pdma_page()
1210 		page->pgmap->type == MEMORY_DEVICE_PCI_P2PDMA;  in is_pci_p2pdma_page()
1214 #define page_ref_zero_or_close_to_overflow(page) \  argument
1215 	((unsigned int) page_ref_count(page) + 127u <= 127u)
1217 static inline void get_page(struct page *page)  in get_page()  argument
1219 	page = compound_head(page);  in get_page()
1224 	VM_BUG_ON_PAGE(page_ref_zero_or_close_to_overflow(page), page);  in get_page()
1225 	page_ref_inc(page);  in get_page()
1228 bool __must_check try_grab_page(struct page *page, unsigned int flags);
1230 static inline __must_check bool try_get_page(struct page *page)  in try_get_page()  argument
1232 	page = compound_head(page);  in try_get_page()
1233 	if (WARN_ON_ONCE(page_ref_count(page) <= 0))  in try_get_page()
1235 	page_ref_inc(page);  in try_get_page()
1239 static inline void put_page(struct page *page)  in put_page()  argument
1241 	page = compound_head(page);  in put_page()
1249 	if (page_is_devmap_managed(page)) {  in put_page()
1250 		put_devmap_managed_page(page);  in put_page()
1254 	if (put_page_testzero(page))  in put_page()
1255 		__put_page(page);  in put_page()
1291 void put_user_page(struct page *page);
1292 void unpin_user_page(struct page *page);
1293 void unpin_user_pages_dirty_lock(struct page **pages, unsigned long npages,
1295 void unpin_user_pages(struct page **pages, unsigned long npages);
1323 static inline bool page_maybe_dma_pinned(struct page *page)  in page_maybe_dma_pinned()  argument
1325 	if (hpage_pincount_available(page))  in page_maybe_dma_pinned()
1326 		return compound_pincount(page) > 0;  in page_maybe_dma_pinned()
1336 	return ((unsigned int)page_ref_count(compound_head(page))) >=  in page_maybe_dma_pinned()
1352 static inline int page_zone_id(struct page *page)  in page_zone_id()  argument
1354 	return (page->flags >> ZONEID_PGSHIFT) & ZONEID_MASK;  in page_zone_id()
1358 extern int page_to_nid(const struct page *page);
1360 static inline int page_to_nid(const struct page *page)  in page_to_nid()  argument
1362 	struct page *p = (struct page *)page;  in page_to_nid()
1406 static inline int page_cpupid_xchg_last(struct page *page, int cpupid)  in page_cpupid_xchg_last()  argument
1408 	return xchg(&page->_last_cpupid, cpupid & LAST_CPUPID_MASK);  in page_cpupid_xchg_last()
1411 static inline int page_cpupid_last(struct page *page)  in page_cpupid_last()  argument
1413 	return page->_last_cpupid;  in page_cpupid_last()
1415 static inline void page_cpupid_reset_last(struct page *page)  in page_cpupid_reset_last()  argument
1417 	page->_last_cpupid = -1 & LAST_CPUPID_MASK;  in page_cpupid_reset_last()
1420 static inline int page_cpupid_last(struct page *page)  in page_cpupid_last()  argument
1422 	return (page->flags >> LAST_CPUPID_PGSHIFT) & LAST_CPUPID_MASK;  in page_cpupid_last()
1425 extern int page_cpupid_xchg_last(struct page *page, int cpupid);
1427 static inline void page_cpupid_reset_last(struct page *page)  in page_cpupid_reset_last()  argument
1429 	page->flags |= LAST_CPUPID_MASK << LAST_CPUPID_PGSHIFT;  in page_cpupid_reset_last()
1433 static inline int page_cpupid_xchg_last(struct page *page, int cpupid)  in page_cpupid_xchg_last()  argument
1435 	return page_to_nid(page); /* XXX */  in page_cpupid_xchg_last()
1438 static inline int page_cpupid_last(struct page *page)  in page_cpupid_last()  argument
1440 	return page_to_nid(page); /* XXX */  in page_cpupid_last()
1468 static inline void page_cpupid_reset_last(struct page *page)  in page_cpupid_reset_last()  argument
1486 static inline u8 page_kasan_tag(const struct page *page)  in page_kasan_tag()  argument
1491 		tag = (page->flags >> KASAN_TAG_PGSHIFT) & KASAN_TAG_MASK;  in page_kasan_tag()
1498 static inline void page_kasan_tag_set(struct page *page, u8 tag)  in page_kasan_tag_set()  argument
1502 		page->flags &= ~(KASAN_TAG_MASK << KASAN_TAG_PGSHIFT);  in page_kasan_tag_set()
1503 		page->flags |= (tag & KASAN_TAG_MASK) << KASAN_TAG_PGSHIFT;  in page_kasan_tag_set()
1507 static inline void page_kasan_tag_reset(struct page *page)  in page_kasan_tag_reset()  argument
1510 		page_kasan_tag_set(page, 0xff);  in page_kasan_tag_reset()
1515 static inline u8 page_kasan_tag(const struct page *page)  in page_kasan_tag()  argument
1520 static inline void page_kasan_tag_set(struct page *page, u8 tag) { }  in page_kasan_tag_set()  argument
1521 static inline void page_kasan_tag_reset(struct page *page) { }  in page_kasan_tag_reset()  argument
1525 static inline struct zone *page_zone(const struct page *page)  in page_zone()  argument
1527 	return &NODE_DATA(page_to_nid(page))->node_zones[page_zonenum(page)];  in page_zone()
1530 static inline pg_data_t *page_pgdat(const struct page *page)  in page_pgdat()  argument
1532 	return NODE_DATA(page_to_nid(page));  in page_pgdat()
1536 static inline void set_page_section(struct page *page, unsigned long section)  in set_page_section()  argument
1538 	page->flags &= ~(SECTIONS_MASK << SECTIONS_PGSHIFT);  in set_page_section()
1539 	page->flags |= (section & SECTIONS_MASK) << SECTIONS_PGSHIFT;  in set_page_section()
1542 static inline unsigned long page_to_section(const struct page *page)  in page_to_section()  argument
1544 	return (page->flags >> SECTIONS_PGSHIFT) & SECTIONS_MASK;  in page_to_section()
1548 static inline void set_page_zone(struct page *page, enum zone_type zone)  in set_page_zone()  argument
1550 	page->flags &= ~(ZONES_MASK << ZONES_PGSHIFT);  in set_page_zone()
1551 	page->flags |= (zone & ZONES_MASK) << ZONES_PGSHIFT;  in set_page_zone()
1554 static inline void set_page_node(struct page *page, unsigned long node)  in set_page_node()  argument
1556 	page->flags &= ~(NODES_MASK << NODES_PGSHIFT);  in set_page_node()
1557 	page->flags |= (node & NODES_MASK) << NODES_PGSHIFT;  in set_page_node()
1560 static inline void set_page_links(struct page *page, enum zone_type zone,  in set_page_links()  argument
1563 	set_page_zone(page, zone);  in set_page_links()
1564 	set_page_node(page, node);  in set_page_links()
1566 	set_page_section(page, pfn_to_section_nr(pfn));  in set_page_links()
1571 static inline struct mem_cgroup *page_memcg(struct page *page)  in page_memcg()  argument
1573 	return page->mem_cgroup;  in page_memcg()
1575 static inline struct mem_cgroup *page_memcg_rcu(struct page *page)  in page_memcg_rcu()  argument
1578 	return READ_ONCE(page->mem_cgroup);  in page_memcg_rcu()
1581 static inline struct mem_cgroup *page_memcg(struct page *page)  in page_memcg()  argument
1585 static inline struct mem_cgroup *page_memcg_rcu(struct page *page)  in page_memcg_rcu()  argument
1597 static __always_inline void *lowmem_page_address(const struct page *page)  in lowmem_page_address()  argument
1599 	return page_to_virt(page);  in lowmem_page_address()
1607 static inline void *page_address(const struct page *page)  in page_address()  argument
1609 	return page->virtual;  in page_address()
1611 static inline void set_page_address(struct page *page, void *address)  in set_page_address()  argument
1613 	page->virtual = address;  in set_page_address()
1619 void *page_address(const struct page *page);
1620 void set_page_address(struct page *page, void *virtual);
1625 #define page_address(page) lowmem_page_address(page)  argument
1626 #define set_page_address(page, address)  do { } while(0)  argument
1630 extern void *page_rmapping(struct page *page);
1631 extern struct anon_vma *page_anon_vma(struct page *page);
1632 extern struct address_space *page_mapping(struct page *page);
1634 extern struct address_space *__page_file_mapping(struct page *);
1637 struct address_space *page_file_mapping(struct page *page)  in page_file_mapping()  argument
1639 	if (unlikely(PageSwapCache(page)))  in page_file_mapping()
1640 		return __page_file_mapping(page);  in page_file_mapping()
1642 	return page->mapping;  in page_file_mapping()
1645 extern pgoff_t __page_file_index(struct page *page);
1651 static inline pgoff_t page_index(struct page *page)  in page_index()  argument
1653 	if (unlikely(PageSwapCache(page)))  in page_index()
1654 		return __page_file_index(page);  in page_index()
1655 	return page->index;  in page_index()
1658 bool page_mapped(struct page *page);
1659 struct address_space *page_mapping(struct page *page);
1660 struct address_space *page_mapping_file(struct page *page);
1667 static inline bool page_is_pfmemalloc(struct page *page)  in page_is_pfmemalloc()  argument
1673 	return page->index == -1UL;  in page_is_pfmemalloc()
1680 static inline void set_page_pfmemalloc(struct page *page)  in set_page_pfmemalloc()  argument
1682 	page->index = -1UL;  in set_page_pfmemalloc()
1685 static inline void clear_page_pfmemalloc(struct page *page)  in clear_page_pfmemalloc()  argument
1687 	page->index = 0;  in clear_page_pfmemalloc()
1696 #define offset_in_thp(page, p)	((unsigned long)(p) & (thp_size(page) - 1))  argument
1721 	struct page *single_page;		/* Locked page to be unmapped */
1724 struct page *_vm_normal_page(struct vm_area_struct *vma, unsigned long addr,
1726 static inline struct page *vm_normal_page(struct vm_area_struct *vma,  in vm_normal_page()
1732 struct page *vm_normal_page_pmd(struct vm_area_struct *vma, unsigned long addr,
1792 int truncate_inode_page(struct address_space *mapping, struct page *page);
1793 int generic_error_remove_page(struct address_space *mapping, struct page *page);
1794 int invalidate_inode_page(struct page *page);
1843 void unmap_mapping_page(struct page *page);
1864 static inline void unmap_mapping_page(struct page *page) { }  in unmap_mapping_page()  argument
1886 			    unsigned int gup_flags, struct page **pages,
1890 			   unsigned int gup_flags, struct page **pages,
1893 			    unsigned int gup_flags, struct page **pages,
1896 		    unsigned int gup_flags, struct page **pages,
1899 		    unsigned int gup_flags, struct page **pages, int *locked);
1901 		    unsigned int gup_flags, struct page **pages, int *locked);
1903 		    struct page **pages, unsigned int gup_flags);
1905 		    struct page **pages, unsigned int gup_flags);
1908 			unsigned int gup_flags, struct page **pages);
1910 			unsigned int gup_flags, struct page **pages);
1940 static inline struct page **frame_vector_pages(struct frame_vector *vec)  in frame_vector_pages()
1948 	return (struct page **)(vec->ptrs);  in frame_vector_pages()
1960 			struct page **pages);
1961 int get_kernel_page(unsigned long start, int write, struct page **pages);
1962 struct page *get_dump_page(unsigned long addr);
1964 extern int try_to_release_page(struct page * page, gfp_t gfp_mask);
1965 extern void do_invalidatepage(struct page *page, unsigned int offset,
1968 void __set_page_dirty(struct page *, struct address_space *, int warn);
1969 int __set_page_dirty_nobuffers(struct page *page);
1970 int __set_page_dirty_no_writeback(struct page *page);
1972 				struct page *page);
1973 void account_page_dirtied(struct page *page, struct address_space *mapping);
1974 void account_page_cleaned(struct page *page, struct address_space *mapping,
1976 int set_page_dirty(struct page *page);
1977 int set_page_dirty_lock(struct page *page);
1978 void __cancel_dirty_page(struct page *page);
1979 static inline void cancel_dirty_page(struct page *page)  in cancel_dirty_page()  argument
1982 	if (PageDirty(page))  in cancel_dirty_page()
1983 		__cancel_dirty_page(page);  in cancel_dirty_page()
1985 int clear_page_dirty_for_io(struct page *page);
2021 			     unsigned int gup_flags, struct page **pages);
2023 			     unsigned int gup_flags, struct page **pages);
2026 			unsigned int gup_flags, struct page **pagep)  in get_user_page_fast_only()
2073 static inline int mm_counter_file(struct page *page)  in mm_counter_file()  argument
2075 	if (PageSwapBacked(page))  in mm_counter_file()
2080 static inline int mm_counter(struct page *page)  in mm_counter()  argument
2082 	if (PageAnon(page))  in mm_counter()
2084 	return mm_counter_file(page);  in mm_counter()
2297 extern bool ptlock_alloc(struct page *page);
2298 extern void ptlock_free(struct page *page);
2300 static inline spinlock_t *ptlock_ptr(struct page *page)  in ptlock_ptr()  argument
2302 	return page->ptl;  in ptlock_ptr()
2309 static inline bool ptlock_alloc(struct page *page)  in ptlock_alloc()  argument
2314 static inline void ptlock_free(struct page *page)  in ptlock_free()  argument
2318 static inline spinlock_t *ptlock_ptr(struct page *page)  in ptlock_ptr()  argument
2320 	return &page->ptl;  in ptlock_ptr()
2329 static inline bool ptlock_init(struct page *page)  in ptlock_init()  argument
2338 	VM_BUG_ON_PAGE(*(unsigned long *)&page->ptl, page);  in ptlock_init()
2339 	if (!ptlock_alloc(page))  in ptlock_init()
2341 	spin_lock_init(ptlock_ptr(page));  in ptlock_init()
2354 static inline bool ptlock_init(struct page *page) { return true; }  in ptlock_init()  argument
2355 static inline void ptlock_free(struct page *page) {}  in ptlock_free()  argument
2364 static inline bool pgtable_pte_page_ctor(struct page *page)  in pgtable_pte_page_ctor()  argument
2366 	if (!ptlock_init(page))  in pgtable_pte_page_ctor()
2368 	__SetPageTable(page);  in pgtable_pte_page_ctor()
2369 	inc_zone_page_state(page, NR_PAGETABLE);  in pgtable_pte_page_ctor()
2373 static inline void pgtable_pte_page_dtor(struct page *page)  in pgtable_pte_page_dtor()  argument
2375 	ptlock_free(page);  in pgtable_pte_page_dtor()
2376 	__ClearPageTable(page);  in pgtable_pte_page_dtor()
2377 	dec_zone_page_state(page, NR_PAGETABLE);  in pgtable_pte_page_dtor()
2409 static struct page *pmd_to_page(pmd_t *pmd)  in pmd_to_page()
2420 static inline bool pmd_ptlock_init(struct page *page)  in pmd_ptlock_init()  argument
2423 	page->pmd_huge_pte = NULL;  in pmd_ptlock_init()
2425 	return ptlock_init(page);  in pmd_ptlock_init()
2428 static inline void pmd_ptlock_free(struct page *page)  in pmd_ptlock_free()  argument
2431 	VM_BUG_ON_PAGE(page->pmd_huge_pte, page);  in pmd_ptlock_free()
2433 	ptlock_free(page);  in pmd_ptlock_free()
2445 static inline bool pmd_ptlock_init(struct page *page) { return true; }  in pmd_ptlock_init()  argument
2446 static inline void pmd_ptlock_free(struct page *page) {}  in pmd_ptlock_free()  argument
2459 static inline bool pgtable_pmd_page_ctor(struct page *page)  in pgtable_pmd_page_ctor()  argument
2461 	if (!pmd_ptlock_init(page))  in pgtable_pmd_page_ctor()
2463 	__SetPageTable(page);  in pgtable_pmd_page_ctor()
2464 	inc_zone_page_state(page, NR_PAGETABLE);  in pgtable_pmd_page_ctor()
2468 static inline void pgtable_pmd_page_dtor(struct page *page)  in pgtable_pmd_page_dtor()  argument
2470 	pmd_ptlock_free(page);  in pgtable_pmd_page_dtor()
2471 	__ClearPageTable(page);  in pgtable_pmd_page_dtor()
2472 	dec_zone_page_state(page, NR_PAGETABLE);  in pgtable_pmd_page_dtor()
2512 extern void free_highmem_page(struct page *page);
2515 extern void adjust_managed_page_count(struct page *page, long count);
2521 static inline void __free_reserved_page(struct page *page)  in __free_reserved_page()  argument
2523 	ClearPageReserved(page);  in __free_reserved_page()
2524 	init_page_count(page);  in __free_reserved_page()
2525 	__free_page(page);  in __free_reserved_page()
2528 static inline void free_reserved_page(struct page *page)  in free_reserved_page()  argument
2530 	__free_reserved_page(page);  in free_reserved_page()
2531 	adjust_managed_page_count(page, 1);  in free_reserved_page()
2534 static inline void mark_page_reserved(struct page *page)  in mark_page_reserved()  argument
2536 	SetPageReserved(page);  in mark_page_reserved()
2537 	adjust_managed_page_count(page, -1);  in mark_page_reserved()
2743 				   unsigned long flags, struct page **pages);
2810 int __must_check write_one_page(struct page *page);
2911 int vm_insert_page(struct vm_area_struct *, unsigned long addr, struct page *);
2913 			struct page **pages, unsigned long *num);
2914 int vm_map_pages(struct vm_area_struct *vma, struct page **pages,
2916 int vm_map_pages_zero(struct vm_area_struct *vma, struct page **pages,
2931 				unsigned long addr, struct page *page)  in vmf_insert_page()  argument
2933 	int err = vm_insert_page(vma, addr, page);  in vmf_insert_page()
2959 struct page *follow_page(struct vm_area_struct *vma, unsigned long address,
3060 extern void __kernel_poison_pages(struct page *page, int numpages);
3061 extern void __kernel_unpoison_pages(struct page *page, int numpages);
3076 static inline void kernel_poison_pages(struct page *page, int numpages)  in kernel_poison_pages()  argument
3079 		__kernel_poison_pages(page, numpages);  in kernel_poison_pages()
3081 static inline void kernel_unpoison_pages(struct page *page, int numpages)  in kernel_unpoison_pages()  argument
3084 		__kernel_unpoison_pages(page, numpages);  in kernel_unpoison_pages()
3089 static inline void __kernel_poison_pages(struct page *page, int nunmpages) { }  in __kernel_poison_pages()  argument
3090 static inline void kernel_poison_pages(struct page *page, int numpages) { }  in kernel_poison_pages()  argument
3091 static inline void kernel_unpoison_pages(struct page *page, int numpages) { }  in kernel_unpoison_pages()  argument
3130 extern void __kernel_map_pages(struct page *page, int numpages, int enable);
3137 kernel_map_pages(struct page *page, int numpages, int enable)  in kernel_map_pages()  argument
3139 	__kernel_map_pages(page, numpages, enable);  in kernel_map_pages()
3142 static inline void debug_pagealloc_map_pages(struct page *page, int numpages)  in debug_pagealloc_map_pages()  argument
3145 		__kernel_map_pages(page, numpages, 1);  in debug_pagealloc_map_pages()
3148 static inline void debug_pagealloc_unmap_pages(struct page *page, int numpages)  in debug_pagealloc_unmap_pages()  argument
3151 		__kernel_map_pages(page, numpages, 0);  in debug_pagealloc_unmap_pages()
3155 extern bool kernel_page_present(struct page *page);
3159 kernel_map_pages(struct page *page, int numpages, int enable) {}  in kernel_map_pages()  argument
3160 static inline void debug_pagealloc_map_pages(struct page *page, int numpages) {}  in debug_pagealloc_map_pages()  argument
3161 static inline void debug_pagealloc_unmap_pages(struct page *page, int numpages) {}  in debug_pagealloc_unmap_pages()  argument
3163 static inline bool kernel_page_present(struct page *page) { return true; }  in kernel_page_present()  argument
3210 struct page * __populate_section_memmap(unsigned long pfn,
3232 void register_page_bootmem_memmap(unsigned long section_nr, struct page *map,
3247 extern void shake_page(struct page *p, int access);
3289 extern void clear_huge_page(struct page *page,
3292 extern void copy_user_huge_page(struct page *dst, struct page *src,
3296 extern long copy_huge_page_from_user(struct page *dst_page,
3333 static inline bool page_is_guard(struct page *page)  in page_is_guard()  argument
3338 	return PageGuard(page);  in page_is_guard()
3343 static inline bool page_is_guard(struct page *page) { return false; }  in page_is_guard()  argument
3352 extern int memcmp_pages(struct page *page1, struct page *page2);
3354 static inline int pages_identical(struct page *page1, struct page *page2)  in pages_identical()