140 static inline int Page##uname(const struct page *page)			\
141 			{ return test_bit(PG_##lname, &page->flags); }
144 static inline void SetPage##uname(struct page *page)			\
145 			{ set_bit(PG_##lname, &page->flags); }
148 static inline void ClearPage##uname(struct page *page)			\
149 			{ clear_bit(PG_##lname, &page->flags); }
152 static inline void __SetPage##uname(struct page *page)			\
153 			{ __set_bit(PG_##lname, &page->flags); }
156 static inline void __ClearPage##uname(struct page *page)		\
157 			{ __clear_bit(PG_##lname, &page->flags); }
160 static inline int TestSetPage##uname(struct page *page)			\
161 		{ return test_and_set_bit(PG_##lname, &page->flags); }
164 static inline int TestClearPage##uname(struct page *page)		\
165 		{ return test_and_clear_bit(PG_##lname, &page->flags); }
168 static inline int __TestClearPage##uname(struct page *page)		\
169 		{ return __test_and_clear_bit(PG_##lname, &page->flags); }
181 static inline int Page##uname(const struct page *page) { return 0; }
184 static inline void SetPage##uname(struct page *page) {  }
187 static inline void ClearPage##uname(struct page *page) {  }
190 static inline void __ClearPage##uname(struct page *page) {  }
193 static inline int TestSetPage##uname(struct page *page) { return 0; }
196 static inline int TestClearPage##uname(struct page *page) { return 0; }
199 static inline int __TestClearPage##uname(struct page *page) { return 0; }
207 struct page;	/* forward declaration */
318 static inline int PageAnon(struct page *page)  in PAGEFLAG()
320 	return ((unsigned long)page->mapping & PAGE_MAPPING_ANON) != 0;  in PAGEFLAG()
330 static inline int PageKsm(struct page *page)  in PageKsm()  argument
332 	return ((unsigned long)page->mapping & PAGE_MAPPING_FLAGS) ==  in PageKsm()
339 u64 stable_page_flags(struct page *page);
341 static inline int PageUptodate(struct page *page)  in PageUptodate()  argument
343 	int ret = test_bit(PG_uptodate, &(page)->flags);  in PageUptodate()
359 static inline void __SetPageUptodate(struct page *page)  in __SetPageUptodate()  argument
362 	__set_bit(PG_uptodate, &(page)->flags);  in __SetPageUptodate()
365 static inline void SetPageUptodate(struct page *page)  in SetPageUptodate()  argument
373 	set_bit(PG_uptodate, &(page)->flags);  in SetPageUptodate()
378 int test_clear_page_writeback(struct page *page);
379 int __test_set_page_writeback(struct page *page, bool keep_write);
381 #define test_set_page_writeback(page)			\  argument
382 	__test_set_page_writeback(page, false)
383 #define test_set_page_writeback_keepwrite(page)	\  argument
384 	__test_set_page_writeback(page, true)
386 static inline void set_page_writeback(struct page *page)  in set_page_writeback()  argument
388 	test_set_page_writeback(page);  in set_page_writeback()
391 static inline void set_page_writeback_keepwrite(struct page *page)  in set_page_writeback_keepwrite()  argument
393 	test_set_page_writeback_keepwrite(page);  in set_page_writeback_keepwrite()
398 static inline int PageTail(struct page *page)  in __PAGEFLAG()
400 	return READ_ONCE(page->compound_head) & 1;  in __PAGEFLAG()
403 static inline void set_compound_head(struct page *page, struct page *head)  in set_compound_head()  argument
405 	WRITE_ONCE(page->compound_head, (unsigned long)head + 1);  in set_compound_head()
408 static inline void clear_compound_head(struct page *page)  in clear_compound_head()  argument
410 	WRITE_ONCE(page->compound_head, 0);  in clear_compound_head()
413 static inline struct page *compound_head(struct page *page)  in compound_head()  argument
415 	unsigned long head = READ_ONCE(page->compound_head);  in compound_head()
418 		return (struct page *) (head - 1);  in compound_head()
419 	return page;  in compound_head()
422 static inline int PageCompound(struct page *page)  in PageCompound()  argument
424 	return PageHead(page) || PageTail(page);  in PageCompound()
428 static inline void ClearPageCompound(struct page *page)  in ClearPageCompound()  argument
430 	BUG_ON(!PageHead(page));  in ClearPageCompound()
431 	ClearPageHead(page);  in ClearPageCompound()
438 int PageHuge(struct page *page);
439 int PageHeadHuge(struct page *page);
440 bool page_huge_active(struct page *page);
445 static inline bool page_huge_active(struct page *page)  in TESTPAGEFLAG_FALSE()
461 static inline int PageTransHuge(struct page *page)  in PageTransHuge()  argument
463 	VM_BUG_ON_PAGE(PageTail(page), page);  in PageTransHuge()
464 	return PageHead(page);  in PageTransHuge()
472 static inline int PageTransCompound(struct page *page)  in PageTransCompound()  argument
474 	return PageCompound(page);  in PageTransCompound()
482 static inline int PageTransTail(struct page *page)  in PageTransTail()  argument
484 	return PageTail(page);  in PageTransTail()
489 static inline int PageTransHuge(struct page *page)  in PageTransHuge()  argument
494 static inline int PageTransCompound(struct page *page)  in PageTransCompound()  argument
499 static inline int PageTransTail(struct page *page)  in PageTransTail()  argument
516 static inline int PageBuddy(struct page *page)  in PageBuddy()  argument
518 	return atomic_read(&page->_mapcount) == PAGE_BUDDY_MAPCOUNT_VALUE;  in PageBuddy()
521 static inline void __SetPageBuddy(struct page *page)  in __SetPageBuddy()  argument
523 	VM_BUG_ON_PAGE(atomic_read(&page->_mapcount) != -1, page);  in __SetPageBuddy()
524 	atomic_set(&page->_mapcount, PAGE_BUDDY_MAPCOUNT_VALUE);  in __SetPageBuddy()
527 static inline void __ClearPageBuddy(struct page *page)  in __ClearPageBuddy()  argument
529 	VM_BUG_ON_PAGE(!PageBuddy(page), page);  in __ClearPageBuddy()
530 	atomic_set(&page->_mapcount, -1);  in __ClearPageBuddy()
535 static inline int PageBalloon(struct page *page)  in PageBalloon()  argument
537 	return atomic_read(&page->_mapcount) == PAGE_BALLOON_MAPCOUNT_VALUE;  in PageBalloon()
540 static inline void __SetPageBalloon(struct page *page)  in __SetPageBalloon()  argument
542 	VM_BUG_ON_PAGE(atomic_read(&page->_mapcount) != -1, page);  in __SetPageBalloon()
543 	atomic_set(&page->_mapcount, PAGE_BALLOON_MAPCOUNT_VALUE);  in __SetPageBalloon()
546 static inline void __ClearPageBalloon(struct page *page)  in __ClearPageBalloon()  argument
548 	VM_BUG_ON_PAGE(!PageBalloon(page), page);  in __ClearPageBalloon()
549 	atomic_set(&page->_mapcount, -1);  in __ClearPageBalloon()
556 static inline int PageSlabPfmemalloc(struct page *page)  in PageSlabPfmemalloc()  argument
558 	VM_BUG_ON_PAGE(!PageSlab(page), page);  in PageSlabPfmemalloc()
559 	return PageActive(page);  in PageSlabPfmemalloc()
562 static inline void SetPageSlabPfmemalloc(struct page *page)  in SetPageSlabPfmemalloc()  argument
564 	VM_BUG_ON_PAGE(!PageSlab(page), page);  in SetPageSlabPfmemalloc()
565 	SetPageActive(page);  in SetPageSlabPfmemalloc()
568 static inline void __ClearPageSlabPfmemalloc(struct page *page)  in __ClearPageSlabPfmemalloc()  argument
570 	VM_BUG_ON_PAGE(!PageSlab(page), page);  in __ClearPageSlabPfmemalloc()
571 	__ClearPageActive(page);  in __ClearPageSlabPfmemalloc()
574 static inline void ClearPageSlabPfmemalloc(struct page *page)  in ClearPageSlabPfmemalloc()  argument
576 	VM_BUG_ON_PAGE(!PageSlab(page), page);  in ClearPageSlabPfmemalloc()
577 	ClearPageActive(page);  in ClearPageSlabPfmemalloc()
624 static inline int page_has_private(struct page *page)  in page_has_private()  argument
626 	return !!(page->flags & PAGE_FLAGS_PRIVATE);  in page_has_private()