159 void release_pages(struct page **pages, int nr);
205 static inline int __page_cache_add_speculative(struct page *page, int count)  in __page_cache_add_speculative()  argument
220 	VM_BUG_ON_PAGE(page_count(page) == 0, page);  in __page_cache_add_speculative()
221 	page_ref_add(page, count);  in __page_cache_add_speculative()
224 	if (unlikely(!page_ref_add_unless(page, count, 0))) {  in __page_cache_add_speculative()
233 	VM_BUG_ON_PAGE(PageTail(page), page);  in __page_cache_add_speculative()
238 static inline int page_cache_get_speculative(struct page *page)  in page_cache_get_speculative()  argument
240 	return __page_cache_add_speculative(page, 1);  in page_cache_get_speculative()
243 static inline int page_cache_add_speculative(struct page *page, int count)  in page_cache_add_speculative()  argument
245 	return __page_cache_add_speculative(page, count);  in page_cache_add_speculative()
256 static inline void attach_page_private(struct page *page, void *data)  in attach_page_private()  argument
258 	get_page(page);  in attach_page_private()
259 	set_page_private(page, (unsigned long)data);  in attach_page_private()
260 	SetPagePrivate(page);  in attach_page_private()
272 static inline void *detach_page_private(struct page *page)  in detach_page_private()  argument
274 	void *data = (void *)page_private(page);  in detach_page_private()
276 	if (!PagePrivate(page))  in detach_page_private()
278 	ClearPagePrivate(page);  in detach_page_private()
279 	set_page_private(page, 0);  in detach_page_private()
280 	put_page(page);  in detach_page_private()
286 extern struct page *__page_cache_alloc(gfp_t gfp);
288 static inline struct page *__page_cache_alloc(gfp_t gfp)  in __page_cache_alloc()
294 static inline struct page *page_cache_alloc(struct address_space *x)  in page_cache_alloc()
301 typedef int filler_t(void *, struct page *);
317 struct page *pagecache_get_page(struct address_space *mapping, pgoff_t offset,
330 static inline struct page *find_get_page(struct address_space *mapping,  in find_get_page()
336 static inline struct page *find_get_page_flags(struct address_space *mapping,  in find_get_page_flags()
355 static inline struct page *find_lock_page(struct address_space *mapping,  in find_lock_page()
374 static inline struct page *find_lock_head(struct address_space *mapping,  in find_lock_head()
399 static inline struct page *find_or_create_page(struct address_space *mapping,  in find_or_create_page()
420 static inline struct page *grab_cache_page_nowait(struct address_space *mapping,  in grab_cache_page_nowait()
429 static inline bool thp_contains(struct page *head, pgoff_t index)  in thp_contains()
441 static inline struct page *find_subpage(struct page *head, pgoff_t index)  in find_subpage()
451 			  unsigned int nr_entries, struct page **entries,
455 			struct page **pages);
458 			struct page **pages)  in find_get_pages()
464 			       unsigned int nr_pages, struct page **pages);
467 			struct page **pages);
470 			struct page **pages)  in find_get_pages_tag()
476 struct page *grab_cache_page_write_begin(struct address_space *mapping,
482 static inline struct page *grab_cache_page(struct address_space *mapping,  in grab_cache_page()
488 extern struct page * read_cache_page(struct address_space *mapping,
490 extern struct page * read_cache_page_gfp(struct address_space *mapping,
495 static inline struct page *read_mapping_page(struct address_space *mapping,  in read_mapping_page()
505 static inline pgoff_t page_to_index(struct page *page)  in page_to_index()  argument
509 	if (likely(!PageTransTail(page)))  in page_to_index()
510 		return page->index;  in page_to_index()
516 	pgoff = compound_head(page)->index;  in page_to_index()
517 	pgoff += page - compound_head(page);  in page_to_index()
521 extern pgoff_t hugetlb_basepage_index(struct page *page);
527 static inline pgoff_t page_to_pgoff(struct page *page)  in page_to_pgoff()  argument
529 	if (unlikely(PageHuge(page)))  in page_to_pgoff()
530 		return hugetlb_basepage_index(page);  in page_to_pgoff()
531 	return page_to_index(page);  in page_to_pgoff()
537 static inline loff_t page_offset(struct page *page)  in page_offset()  argument
539 	return ((loff_t)page->index) << PAGE_SHIFT;  in page_offset()
542 static inline loff_t page_file_offset(struct page *page)  in page_file_offset()  argument
544 	return ((loff_t)page_index(page)) << PAGE_SHIFT;  in page_file_offset()
562 	struct page *page;  member
568 	struct page *page;  member
576 	if (wait_page->page != key->page)  in wake_page_match()
586 extern void __lock_page(struct page *page);
587 extern int __lock_page_killable(struct page *page);
588 extern int __lock_page_async(struct page *page, struct wait_page_queue *wait);
589 extern int __lock_page_or_retry(struct page *page, struct mm_struct *mm,
591 extern void unlock_page(struct page *page);
596 static inline int trylock_page(struct page *page)  in trylock_page()  argument
598 	page = compound_head(page);  in trylock_page()
599 	return (likely(!test_and_set_bit_lock(PG_locked, &page->flags)));  in trylock_page()
605 static inline __sched void lock_page(struct page *page)  in lock_page()  argument
608 	if (!trylock_page(page))  in lock_page()
609 		__lock_page(page);  in lock_page()
617 static inline __sched int lock_page_killable(struct page *page)  in lock_page_killable()  argument
620 	if (!trylock_page(page))  in lock_page_killable()
621 		return __lock_page_killable(page);  in lock_page_killable()
633 static inline __sched int lock_page_async(struct page *page,  in lock_page_async()  argument
636 	if (!trylock_page(page))  in lock_page_async()
637 		return __lock_page_async(page, wait);  in lock_page_async()
648 static inline __sched int lock_page_or_retry(struct page *page, struct mm_struct *mm,  in lock_page_or_retry()  argument
652 	return trylock_page(page) || __lock_page_or_retry(page, mm, flags);  in lock_page_or_retry()
659 extern void wait_on_page_bit(struct page *page, int bit_nr);
660 extern int wait_on_page_bit_killable(struct page *page, int bit_nr);
669 static inline __sched void wait_on_page_locked(struct page *page)  in wait_on_page_locked()  argument
671 	if (PageLocked(page))  in wait_on_page_locked()
672 		wait_on_page_bit(compound_head(page), PG_locked);  in wait_on_page_locked()
675 static inline __sched int wait_on_page_locked_killable(struct page *page)  in wait_on_page_locked_killable()  argument
677 	if (!PageLocked(page))  in wait_on_page_locked_killable()
679 	return wait_on_page_bit_killable(compound_head(page), PG_locked);  in wait_on_page_locked_killable()
682 extern void put_and_wait_on_page_locked(struct page *page);
684 void wait_on_page_writeback(struct page *page);
685 extern void end_page_writeback(struct page *page);
686 void wait_for_stable_page(struct page *page);
688 void page_endio(struct page *page, bool is_write, int err);
693 extern void add_page_wait_queue(struct page *page, wait_queue_entry_t *waiter);
752 int add_to_page_cache_locked(struct page *page, struct address_space *mapping,
754 int add_to_page_cache_lru(struct page *page, struct address_space *mapping,
756 extern void delete_from_page_cache(struct page *page);
757 extern void __delete_from_page_cache(struct page *page, void *shadow);
758 int replace_page_cache_page(struct page *old, struct page *new, gfp_t gfp_mask);
766 static inline int add_to_page_cache(struct page *page,  in add_to_page_cache()  argument
771 	__SetPageLocked(page);  in add_to_page_cache()
772 	error = add_to_page_cache_locked(page, mapping, offset, gfp_mask);  in add_to_page_cache()
774 		__ClearPageLocked(page);  in add_to_page_cache()
816 		struct page *, unsigned long req_count);
857 		struct page *page, pgoff_t index, unsigned long req_count)  in page_cache_async_readahead()  argument
860 	page_cache_async_ra(&ractl, ra, page, req_count);  in page_cache_async_readahead()
872 static inline struct page *readahead_page(struct readahead_control *rac)  in readahead_page()
874 	struct page *page;  in readahead_page()  local
885 	page = xa_load(&rac->mapping->i_pages, rac->_index);  in readahead_page()
886 	VM_BUG_ON_PAGE(!PageLocked(page), page);  in readahead_page()
887 	rac->_batch_count = thp_nr_pages(page);  in readahead_page()
889 	return page;  in readahead_page()
893 		struct page **array, unsigned int array_sz)  in __readahead_batch()
897 	struct page *page;  in __readahead_batch()  local
906 	xas_for_each(&xas, page, rac->_index + rac->_nr_pages - 1) {  in __readahead_batch()
907 		if (xas_retry(&xas, page))  in __readahead_batch()
909 		VM_BUG_ON_PAGE(!PageLocked(page), page);  in __readahead_batch()
910 		VM_BUG_ON_PAGE(PageTail(page), page);  in __readahead_batch()
911 		array[i++] = page;  in __readahead_batch()
912 		rac->_batch_count += thp_nr_pages(page);  in __readahead_batch()
920 		if (PageHead(page))  in __readahead_batch()
995 static inline int page_mkwrite_check_truncate(struct page *page,  in page_mkwrite_check_truncate()  argument
1002 	if (page->mapping != inode->i_mapping)  in page_mkwrite_check_truncate()
1006 	if (page->index < index)  in page_mkwrite_check_truncate()
1009 	if (page->index > index || !offset)  in page_mkwrite_check_truncate()
1027 unsigned int i_blocks_per_page(struct inode *inode, struct page *page)  in i_blocks_per_page()  argument
1029 	return thp_size(page) >> inode->i_blkbits;  in i_blocks_per_page()