141 static inline int Page##uname(const struct page *page)			\
142 			{ return test_bit(PG_##lname, &page->flags); }
145 static inline void SetPage##uname(struct page *page)			\
146 			{ set_bit(PG_##lname, &page->flags); }
149 static inline void ClearPage##uname(struct page *page)			\
150 			{ clear_bit(PG_##lname, &page->flags); }
153 static inline void __SetPage##uname(struct page *page)			\
154 			{ __set_bit(PG_##lname, &page->flags); }
157 static inline void __ClearPage##uname(struct page *page)		\
158 			{ __clear_bit(PG_##lname, &page->flags); }
161 static inline int TestSetPage##uname(struct page *page)			\
162 		{ return test_and_set_bit(PG_##lname, &page->flags); }
165 static inline int TestClearPage##uname(struct page *page)		\
166 		{ return test_and_clear_bit(PG_##lname, &page->flags); }
169 static inline int __TestClearPage##uname(struct page *page)		\
170 		{ return __test_and_clear_bit(PG_##lname, &page->flags); }
182 static inline int Page##uname(const struct page *page) { return 0; }
185 static inline void SetPage##uname(struct page *page) {  }
188 static inline void ClearPage##uname(struct page *page) {  }
191 static inline void __ClearPage##uname(struct page *page) {  }
194 static inline int TestSetPage##uname(struct page *page) { return 0; }
197 static inline int TestClearPage##uname(struct page *page) { return 0; }
200 static inline int __TestClearPage##uname(struct page *page) { return 0; }
208 struct page;	/* forward declaration */
312 static inline int PageAnon(struct page *page)  in PAGEFLAG()
314 	return ((unsigned long)page->mapping & PAGE_MAPPING_ANON) != 0;  in PAGEFLAG()
324 static inline int PageKsm(struct page *page)  in PageKsm()  argument
326 	return ((unsigned long)page->mapping & PAGE_MAPPING_FLAGS) ==  in PageKsm()
333 u64 stable_page_flags(struct page *page);
335 static inline int PageUptodate(struct page *page)  in PageUptodate()  argument
337 	int ret = test_bit(PG_uptodate, &(page)->flags);  in PageUptodate()
353 static inline void __SetPageUptodate(struct page *page)  in __SetPageUptodate()  argument
356 	__set_bit(PG_uptodate, &(page)->flags);  in __SetPageUptodate()
359 static inline void SetPageUptodate(struct page *page)  in SetPageUptodate()  argument
367 	set_bit(PG_uptodate, &(page)->flags);  in SetPageUptodate()
372 int test_clear_page_writeback(struct page *page);
373 int __test_set_page_writeback(struct page *page, bool keep_write);
375 #define test_set_page_writeback(page)			\  argument
376 	__test_set_page_writeback(page, false)
377 #define test_set_page_writeback_keepwrite(page)	\  argument
378 	__test_set_page_writeback(page, true)
380 static inline void set_page_writeback(struct page *page)  in set_page_writeback()  argument
382 	test_set_page_writeback(page);  in set_page_writeback()
385 static inline void set_page_writeback_keepwrite(struct page *page)  in set_page_writeback_keepwrite()  argument
387 	test_set_page_writeback_keepwrite(page);  in set_page_writeback_keepwrite()
402 static inline int PageCompound(struct page *page)  in __PAGEFLAG()
404 	return page->flags & ((1L << PG_head) | (1L << PG_tail));  in __PAGEFLAG()
408 static inline void ClearPageCompound(struct page *page)  in ClearPageCompound()  argument
410 	BUG_ON(!PageHead(page));  in ClearPageCompound()
411 	ClearPageHead(page);  in ClearPageCompound()
440 static inline int PageHead(struct page *page)  in TESTPAGEFLAG()
442 	return ((page->flags & PG_head_tail_mask) == PG_head_mask);  in TESTPAGEFLAG()
445 static inline int PageTail(struct page *page)  in PageTail()  argument
447 	return ((page->flags & PG_head_tail_mask) == PG_head_tail_mask);  in PageTail()
450 static inline void __SetPageTail(struct page *page)  in __SetPageTail()  argument
452 	page->flags |= PG_head_tail_mask;  in __SetPageTail()
455 static inline void __ClearPageTail(struct page *page)  in __ClearPageTail()  argument
457 	page->flags &= ~PG_head_tail_mask;  in __ClearPageTail()
461 static inline void ClearPageCompound(struct page *page)  in ClearPageCompound()  argument
463 	BUG_ON((page->flags & PG_head_tail_mask) != (1 << PG_compound));  in ClearPageCompound()
464 	clear_bit(PG_compound, &page->flags);  in ClearPageCompound()
471 int PageHuge(struct page *page);
472 int PageHeadHuge(struct page *page);
473 bool page_huge_active(struct page *page);
478 static inline bool page_huge_active(struct page *page)  in TESTPAGEFLAG_FALSE()
494 static inline int PageTransHuge(struct page *page)  in PageTransHuge()  argument
496 	VM_BUG_ON_PAGE(PageTail(page), page);  in PageTransHuge()
497 	return PageHead(page);  in PageTransHuge()
505 static inline int PageTransCompound(struct page *page)  in PageTransCompound()  argument
507 	return PageCompound(page);  in PageTransCompound()
515 static inline int PageTransTail(struct page *page)  in PageTransTail()  argument
517 	return PageTail(page);  in PageTransTail()
522 static inline int PageTransHuge(struct page *page)  in PageTransHuge()  argument
527 static inline int PageTransCompound(struct page *page)  in PageTransCompound()  argument
532 static inline int PageTransTail(struct page *page)  in PageTransTail()  argument
549 static inline int PageBuddy(struct page *page)  in PageBuddy()  argument
551 	return atomic_read(&page->_mapcount) == PAGE_BUDDY_MAPCOUNT_VALUE;  in PageBuddy()
554 static inline void __SetPageBuddy(struct page *page)  in __SetPageBuddy()  argument
556 	VM_BUG_ON_PAGE(atomic_read(&page->_mapcount) != -1, page);  in __SetPageBuddy()
557 	atomic_set(&page->_mapcount, PAGE_BUDDY_MAPCOUNT_VALUE);  in __SetPageBuddy()
560 static inline void __ClearPageBuddy(struct page *page)  in __ClearPageBuddy()  argument
562 	VM_BUG_ON_PAGE(!PageBuddy(page), page);  in __ClearPageBuddy()
563 	atomic_set(&page->_mapcount, -1);  in __ClearPageBuddy()
568 static inline int PageBalloon(struct page *page)  in PageBalloon()  argument
570 	return atomic_read(&page->_mapcount) == PAGE_BALLOON_MAPCOUNT_VALUE;  in PageBalloon()
573 static inline void __SetPageBalloon(struct page *page)  in __SetPageBalloon()  argument
575 	VM_BUG_ON_PAGE(atomic_read(&page->_mapcount) != -1, page);  in __SetPageBalloon()
576 	atomic_set(&page->_mapcount, PAGE_BALLOON_MAPCOUNT_VALUE);  in __SetPageBalloon()
579 static inline void __ClearPageBalloon(struct page *page)  in __ClearPageBalloon()  argument
581 	VM_BUG_ON_PAGE(!PageBalloon(page), page);  in __ClearPageBalloon()
582 	atomic_set(&page->_mapcount, -1);  in __ClearPageBalloon()
589 static inline int PageSlabPfmemalloc(struct page *page)  in PageSlabPfmemalloc()  argument
591 	VM_BUG_ON_PAGE(!PageSlab(page), page);  in PageSlabPfmemalloc()
592 	return PageActive(page);  in PageSlabPfmemalloc()
595 static inline void SetPageSlabPfmemalloc(struct page *page)  in SetPageSlabPfmemalloc()  argument
597 	VM_BUG_ON_PAGE(!PageSlab(page), page);  in SetPageSlabPfmemalloc()
598 	SetPageActive(page);  in SetPageSlabPfmemalloc()
601 static inline void __ClearPageSlabPfmemalloc(struct page *page)  in __ClearPageSlabPfmemalloc()  argument
603 	VM_BUG_ON_PAGE(!PageSlab(page), page);  in __ClearPageSlabPfmemalloc()
604 	__ClearPageActive(page);  in __ClearPageSlabPfmemalloc()
607 static inline void ClearPageSlabPfmemalloc(struct page *page)  in ClearPageSlabPfmemalloc()  argument
609 	VM_BUG_ON_PAGE(!PageSlab(page), page);  in ClearPageSlabPfmemalloc()
610 	ClearPageActive(page);  in ClearPageSlabPfmemalloc()
657 static inline int page_has_private(struct page *page)  in page_has_private()  argument
659 	return !!(page->flags & PAGE_FLAGS_PRIVATE);  in page_has_private()