163 void release_pages(struct page **pages, int nr);
168 static inline struct address_space *page_mapping_file(struct page *page)  in page_mapping_file()  argument
170 	if (unlikely(PageSwapCache(page)))  in page_mapping_file()
172 	return page_mapping(page);  in page_mapping_file()
219 static inline int __page_cache_add_speculative(struct page *page, int count)  in __page_cache_add_speculative()  argument
234 	VM_BUG_ON_PAGE(page_count(page) == 0, page);  in __page_cache_add_speculative()
235 	page_ref_add(page, count);  in __page_cache_add_speculative()
238 	if (unlikely(!page_ref_add_unless(page, count, 0))) {  in __page_cache_add_speculative()
247 	VM_BUG_ON_PAGE(PageTail(page), page);  in __page_cache_add_speculative()
252 static inline int page_cache_get_speculative(struct page *page)  in page_cache_get_speculative()  argument
254 	return __page_cache_add_speculative(page, 1);  in page_cache_get_speculative()
257 static inline int page_cache_add_speculative(struct page *page, int count)  in page_cache_add_speculative()  argument
259 	return __page_cache_add_speculative(page, count);  in page_cache_add_speculative()
270 static inline void attach_page_private(struct page *page, void *data)  in attach_page_private()  argument
272 	get_page(page);  in attach_page_private()
273 	set_page_private(page, (unsigned long)data);  in attach_page_private()
274 	SetPagePrivate(page);  in attach_page_private()
286 static inline void *detach_page_private(struct page *page)  in detach_page_private()  argument
288 	void *data = (void *)page_private(page);  in detach_page_private()
290 	if (!PagePrivate(page))  in detach_page_private()
292 	ClearPagePrivate(page);  in detach_page_private()
293 	set_page_private(page, 0);  in detach_page_private()
294 	put_page(page);  in detach_page_private()
300 extern struct page *__page_cache_alloc(gfp_t gfp);
302 static inline struct page *__page_cache_alloc(gfp_t gfp)  in __page_cache_alloc()
308 static inline struct page *page_cache_alloc(struct address_space *x)  in page_cache_alloc()
318 typedef int filler_t(void *, struct page *);
335 struct page *pagecache_get_page(struct address_space *mapping, pgoff_t offset,
348 static inline struct page *find_get_page(struct address_space *mapping,  in find_get_page()
354 static inline struct page *find_get_page_flags(struct address_space *mapping,  in find_get_page_flags()
373 static inline struct page *find_lock_page(struct address_space *mapping,  in find_lock_page()
392 static inline struct page *find_lock_head(struct address_space *mapping,  in find_lock_head()
417 static inline struct page *find_or_create_page(struct address_space *mapping,  in find_or_create_page()
438 static inline struct page *grab_cache_page_nowait(struct address_space *mapping,  in grab_cache_page_nowait()
447 static inline bool thp_contains(struct page *head, pgoff_t index)  in thp_contains()
459 static inline struct page *find_subpage(struct page *head, pgoff_t index)  in find_subpage()
472 			struct page **pages);
475 			struct page **pages)  in find_get_pages()
481 			       unsigned int nr_pages, struct page **pages);
484 			struct page **pages);
487 			struct page **pages)  in find_get_pages_tag()
493 struct page *grab_cache_page_write_begin(struct address_space *mapping,
499 static inline struct page *grab_cache_page(struct address_space *mapping,  in grab_cache_page()
505 extern struct page * read_cache_page(struct address_space *mapping,
507 extern struct page * read_cache_page_gfp(struct address_space *mapping,
512 static inline struct page *read_mapping_page(struct address_space *mapping,  in read_mapping_page()
522 static inline pgoff_t page_to_index(struct page *page)  in page_to_index()  argument
524 	struct page *head;  in page_to_index()
526 	if (likely(!PageTransTail(page)))  in page_to_index()
527 		return page->index;  in page_to_index()
529 	head = compound_head(page);  in page_to_index()
534 	return head->index + page - head;  in page_to_index()
537 extern pgoff_t hugetlb_basepage_index(struct page *page);
543 static inline pgoff_t page_to_pgoff(struct page *page)  in page_to_pgoff()  argument
545 	if (unlikely(PageHuge(page)))  in page_to_pgoff()
546 		return hugetlb_basepage_index(page);  in page_to_pgoff()
547 	return page_to_index(page);  in page_to_pgoff()
553 static inline loff_t page_offset(struct page *page)  in page_offset()  argument
555 	return ((loff_t)page->index) << PAGE_SHIFT;  in page_offset()
558 static inline loff_t page_file_offset(struct page *page)  in page_file_offset()  argument
560 	return ((loff_t)page_index(page)) << PAGE_SHIFT;  in page_file_offset()
578 	struct page *page;  member
584 	struct page *page;  member
592 	if (wait_page->page != key->page)  in wake_page_match()
602 extern void __lock_page(struct page *page);
603 extern int __lock_page_killable(struct page *page);
604 extern int __lock_page_async(struct page *page, struct wait_page_queue *wait);
605 extern int __lock_page_or_retry(struct page *page, struct mm_struct *mm,
607 extern void unlock_page(struct page *page);
612 static inline int trylock_page(struct page *page)  in trylock_page()  argument
614 	page = compound_head(page);  in trylock_page()
615 	return (likely(!test_and_set_bit_lock(PG_locked, &page->flags)));  in trylock_page()
621 static inline void lock_page(struct page *page)  in lock_page()  argument
624 	if (!trylock_page(page))  in lock_page()
625 		__lock_page(page);  in lock_page()
633 static inline int lock_page_killable(struct page *page)  in lock_page_killable()  argument
636 	if (!trylock_page(page))  in lock_page_killable()
637 		return __lock_page_killable(page);  in lock_page_killable()
649 static inline int lock_page_async(struct page *page,  in lock_page_async()  argument
652 	if (!trylock_page(page))  in lock_page_async()
653 		return __lock_page_async(page, wait);  in lock_page_async()
664 static inline int lock_page_or_retry(struct page *page, struct mm_struct *mm,  in lock_page_or_retry()  argument
668 	return trylock_page(page) || __lock_page_or_retry(page, mm, flags);  in lock_page_or_retry()
675 extern void wait_on_page_bit(struct page *page, int bit_nr);
676 extern int wait_on_page_bit_killable(struct page *page, int bit_nr);
685 static inline void wait_on_page_locked(struct page *page)  in wait_on_page_locked()  argument
687 	if (PageLocked(page))  in wait_on_page_locked()
688 		wait_on_page_bit(compound_head(page), PG_locked);  in wait_on_page_locked()
691 static inline int wait_on_page_locked_killable(struct page *page)  in wait_on_page_locked_killable()  argument
693 	if (!PageLocked(page))  in wait_on_page_locked_killable()
695 	return wait_on_page_bit_killable(compound_head(page), PG_locked);  in wait_on_page_locked_killable()
698 int put_and_wait_on_page_locked(struct page *page, int state);
699 void wait_on_page_writeback(struct page *page);
700 int wait_on_page_writeback_killable(struct page *page);
701 extern void end_page_writeback(struct page *page);
702 void wait_for_stable_page(struct page *page);
704 void __set_page_dirty(struct page *, struct address_space *, int warn);
705 int __set_page_dirty_nobuffers(struct page *page);
706 int __set_page_dirty_no_writeback(struct page *page);
708 void page_endio(struct page *page, bool is_write, int err);
719 static inline void set_page_private_2(struct page *page)  in set_page_private_2()  argument
721 	page = compound_head(page);  in set_page_private_2()
722 	get_page(page);  in set_page_private_2()
723 	SetPagePrivate2(page);  in set_page_private_2()
726 void end_page_private_2(struct page *page);
727 void wait_on_page_private_2(struct page *page);
728 int wait_on_page_private_2_killable(struct page *page);
733 extern void add_page_wait_queue(struct page *page, wait_queue_entry_t *waiter);
792 int add_to_page_cache_locked(struct page *page, struct address_space *mapping,
794 int add_to_page_cache_lru(struct page *page, struct address_space *mapping,
796 extern void delete_from_page_cache(struct page *page);
797 extern void __delete_from_page_cache(struct page *page, void *shadow);
798 void replace_page_cache_page(struct page *old, struct page *new);
808 static inline int add_to_page_cache(struct page *page,  in add_to_page_cache()  argument
813 	__SetPageLocked(page);  in add_to_page_cache()
814 	error = add_to_page_cache_locked(page, mapping, offset, gfp_mask);  in add_to_page_cache()
816 		__ClearPageLocked(page);  in add_to_page_cache()
859 void page_cache_async_ra(struct readahead_control *, struct page *,
903 		struct page *page, pgoff_t index, unsigned long req_count)  in page_cache_async_readahead()  argument
906 	page_cache_async_ra(&ractl, page, req_count);  in page_cache_async_readahead()
918 static inline struct page *readahead_page(struct readahead_control *rac)  in readahead_page()
920 	struct page *page;  in readahead_page()  local
931 	page = xa_load(&rac->mapping->i_pages, rac->_index);  in readahead_page()
932 	VM_BUG_ON_PAGE(!PageLocked(page), page);  in readahead_page()
933 	rac->_batch_count = thp_nr_pages(page);  in readahead_page()
935 	return page;  in readahead_page()
939 		struct page **array, unsigned int array_sz)  in __readahead_batch()
943 	struct page *page;  in __readahead_batch()  local
952 	xas_for_each(&xas, page, rac->_index + rac->_nr_pages - 1) {  in __readahead_batch()
953 		if (xas_retry(&xas, page))  in __readahead_batch()
955 		VM_BUG_ON_PAGE(!PageLocked(page), page);  in __readahead_batch()
956 		VM_BUG_ON_PAGE(PageTail(page), page);  in __readahead_batch()
957 		array[i++] = page;  in __readahead_batch()
958 		rac->_batch_count += thp_nr_pages(page);  in __readahead_batch()
966 		if (PageHead(page))  in __readahead_batch()
1050 static inline int page_mkwrite_check_truncate(struct page *page,  in page_mkwrite_check_truncate()  argument
1057 	if (page->mapping != inode->i_mapping)  in page_mkwrite_check_truncate()
1061 	if (page->index < index)  in page_mkwrite_check_truncate()
1064 	if (page->index > index || !offset)  in page_mkwrite_check_truncate()
1082 unsigned int i_blocks_per_page(struct inode *inode, struct page *page)  in i_blocks_per_page()  argument
1084 	return thp_size(page) >> inode->i_blkbits;  in i_blocks_per_page()