158 void release_pages(struct page **pages, int nr);
204 static inline int __page_cache_add_speculative(struct page *page, int count)  in __page_cache_add_speculative()  argument
219 	VM_BUG_ON_PAGE(page_count(page) == 0, page);  in __page_cache_add_speculative()
220 	page_ref_add(page, count);  in __page_cache_add_speculative()
223 	if (unlikely(!page_ref_add_unless(page, count, 0))) {  in __page_cache_add_speculative()
232 	VM_BUG_ON_PAGE(PageTail(page), page);  in __page_cache_add_speculative()
237 static inline int page_cache_get_speculative(struct page *page)  in page_cache_get_speculative()  argument
239 	return __page_cache_add_speculative(page, 1);  in page_cache_get_speculative()
242 static inline int page_cache_add_speculative(struct page *page, int count)  in page_cache_add_speculative()  argument
244 	return __page_cache_add_speculative(page, count);  in page_cache_add_speculative()
255 static inline void attach_page_private(struct page *page, void *data)  in attach_page_private()  argument
257 	get_page(page);  in attach_page_private()
258 	set_page_private(page, (unsigned long)data);  in attach_page_private()
259 	SetPagePrivate(page);  in attach_page_private()
271 static inline void *detach_page_private(struct page *page)  in detach_page_private()  argument
273 	void *data = (void *)page_private(page);  in detach_page_private()
275 	if (!PagePrivate(page))  in detach_page_private()
277 	ClearPagePrivate(page);  in detach_page_private()
278 	set_page_private(page, 0);  in detach_page_private()
279 	put_page(page);  in detach_page_private()
285 extern struct page *__page_cache_alloc(gfp_t gfp);
287 static inline struct page *__page_cache_alloc(gfp_t gfp)  in __page_cache_alloc()
293 static inline struct page *page_cache_alloc(struct address_space *x)  in page_cache_alloc()
303 typedef int filler_t(void *, struct page *);
319 struct page *pagecache_get_page(struct address_space *mapping, pgoff_t offset,
332 static inline struct page *find_get_page(struct address_space *mapping,  in find_get_page()
338 static inline struct page *find_get_page_flags(struct address_space *mapping,  in find_get_page_flags()
357 static inline struct page *find_lock_page(struct address_space *mapping,  in find_lock_page()
376 static inline struct page *find_lock_head(struct address_space *mapping,  in find_lock_head()
401 static inline struct page *find_or_create_page(struct address_space *mapping,  in find_or_create_page()
422 static inline struct page *grab_cache_page_nowait(struct address_space *mapping,  in grab_cache_page_nowait()
431 static inline bool thp_contains(struct page *head, pgoff_t index)  in thp_contains()
443 static inline struct page *find_subpage(struct page *head, pgoff_t index)  in find_subpage()
453 			  unsigned int nr_entries, struct page **entries,
457 			struct page **pages);
460 			struct page **pages)  in find_get_pages()
466 			       unsigned int nr_pages, struct page **pages);
469 			struct page **pages);
472 			struct page **pages)  in find_get_pages_tag()
478 struct page *grab_cache_page_write_begin(struct address_space *mapping,
484 static inline struct page *grab_cache_page(struct address_space *mapping,  in grab_cache_page()
490 extern struct page * read_cache_page(struct address_space *mapping,
492 extern struct page * read_cache_page_gfp(struct address_space *mapping,
497 static inline struct page *read_mapping_page(struct address_space *mapping,  in read_mapping_page()
507 static inline pgoff_t page_to_index(struct page *page)  in page_to_index()  argument
511 	if (likely(!PageTransTail(page)))  in page_to_index()
512 		return page->index;  in page_to_index()
518 	pgoff = compound_head(page)->index;  in page_to_index()
519 	pgoff += page - compound_head(page);  in page_to_index()
527 static inline pgoff_t page_to_pgoff(struct page *page)  in page_to_pgoff()  argument
529 	if (unlikely(PageHeadHuge(page)))  in page_to_pgoff()
530 		return page->index << compound_order(page);  in page_to_pgoff()
532 	return page_to_index(page);  in page_to_pgoff()
538 static inline loff_t page_offset(struct page *page)  in page_offset()  argument
540 	return ((loff_t)page->index) << PAGE_SHIFT;  in page_offset()
543 static inline loff_t page_file_offset(struct page *page)  in page_file_offset()  argument
545 	return ((loff_t)page_index(page)) << PAGE_SHIFT;  in page_file_offset()
564 	struct page *page;  member
570 	struct page *page;  member
578 	if (wait_page->page != key->page)  in wake_page_match()
588 extern void __lock_page(struct page *page);
589 extern int __lock_page_killable(struct page *page);
590 extern int __lock_page_async(struct page *page, struct wait_page_queue *wait);
591 extern int __lock_page_or_retry(struct page *page, struct mm_struct *mm,
593 extern void unlock_page(struct page *page);
598 static inline int trylock_page(struct page *page)  in trylock_page()  argument
600 	page = compound_head(page);  in trylock_page()
601 	return (likely(!test_and_set_bit_lock(PG_locked, &page->flags)));  in trylock_page()
607 static inline void lock_page(struct page *page)  in lock_page()  argument
610 	if (!trylock_page(page))  in lock_page()
611 		__lock_page(page);  in lock_page()
619 static inline int lock_page_killable(struct page *page)  in lock_page_killable()  argument
622 	if (!trylock_page(page))  in lock_page_killable()
623 		return __lock_page_killable(page);  in lock_page_killable()
635 static inline int lock_page_async(struct page *page,  in lock_page_async()  argument
638 	if (!trylock_page(page))  in lock_page_async()
639 		return __lock_page_async(page, wait);  in lock_page_async()
650 static inline int lock_page_or_retry(struct page *page, struct mm_struct *mm,  in lock_page_or_retry()  argument
654 	return trylock_page(page) || __lock_page_or_retry(page, mm, flags);  in lock_page_or_retry()
661 extern void wait_on_page_bit(struct page *page, int bit_nr);
662 extern int wait_on_page_bit_killable(struct page *page, int bit_nr);
671 static inline void wait_on_page_locked(struct page *page)  in wait_on_page_locked()  argument
673 	if (PageLocked(page))  in wait_on_page_locked()
674 		wait_on_page_bit(compound_head(page), PG_locked);  in wait_on_page_locked()
677 static inline int wait_on_page_locked_killable(struct page *page)  in wait_on_page_locked_killable()  argument
679 	if (!PageLocked(page))  in wait_on_page_locked_killable()
681 	return wait_on_page_bit_killable(compound_head(page), PG_locked);  in wait_on_page_locked_killable()
684 extern void put_and_wait_on_page_locked(struct page *page);
686 void wait_on_page_writeback(struct page *page);
687 extern void end_page_writeback(struct page *page);
688 void wait_for_stable_page(struct page *page);
690 void page_endio(struct page *page, bool is_write, int err);
695 extern void add_page_wait_queue(struct page *page, wait_queue_entry_t *waiter);
754 int add_to_page_cache_locked(struct page *page, struct address_space *mapping,
756 int add_to_page_cache_lru(struct page *page, struct address_space *mapping,
758 extern void delete_from_page_cache(struct page *page);
759 extern void __delete_from_page_cache(struct page *page, void *shadow);
760 int replace_page_cache_page(struct page *old, struct page *new, gfp_t gfp_mask);
768 static inline int add_to_page_cache(struct page *page,  in add_to_page_cache()  argument
773 	__SetPageLocked(page);  in add_to_page_cache()
774 	error = add_to_page_cache_locked(page, mapping, offset, gfp_mask);  in add_to_page_cache()
776 		__ClearPageLocked(page);  in add_to_page_cache()
818 		struct page *, unsigned long req_count);
859 		struct page *page, pgoff_t index, unsigned long req_count)  in page_cache_async_readahead()  argument
862 	page_cache_async_ra(&ractl, ra, page, req_count);  in page_cache_async_readahead()
874 static inline struct page *readahead_page(struct readahead_control *rac)  in readahead_page()
876 	struct page *page;  in readahead_page()  local
887 	page = xa_load(&rac->mapping->i_pages, rac->_index);  in readahead_page()
888 	VM_BUG_ON_PAGE(!PageLocked(page), page);  in readahead_page()
889 	rac->_batch_count = thp_nr_pages(page);  in readahead_page()
891 	return page;  in readahead_page()
895 		struct page **array, unsigned int array_sz)  in __readahead_batch()
899 	struct page *page;  in __readahead_batch()  local
908 	xas_for_each(&xas, page, rac->_index + rac->_nr_pages - 1) {  in __readahead_batch()
909 		if (xas_retry(&xas, page))  in __readahead_batch()
911 		VM_BUG_ON_PAGE(!PageLocked(page), page);  in __readahead_batch()
912 		VM_BUG_ON_PAGE(PageTail(page), page);  in __readahead_batch()
913 		array[i++] = page;  in __readahead_batch()
914 		rac->_batch_count += thp_nr_pages(page);  in __readahead_batch()
922 		if (PageHead(page))  in __readahead_batch()
997 static inline int page_mkwrite_check_truncate(struct page *page,  in page_mkwrite_check_truncate()  argument
1004 	if (page->mapping != inode->i_mapping)  in page_mkwrite_check_truncate()
1008 	if (page->index < index)  in page_mkwrite_check_truncate()
1011 	if (page->index > index || !offset)  in page_mkwrite_check_truncate()
1029 unsigned int i_blocks_per_page(struct inode *inode, struct page *page)  in i_blocks_per_page()  argument
1031 	return thp_size(page) >> inode->i_blkbits;  in i_blocks_per_page()