28 struct page *follow_trans_huge_pmd(struct vm_area_struct *vma,
48  * @pgprot: page protection to use
67  * @pgprot: page protection to use
184 void prep_transhuge_page(struct page *page);
185 void free_transhuge_page(struct page *page);
186 bool is_transparent_hugepage(struct page *page);
188 bool can_split_huge_page(struct page *page, int *pextra_pins);
189 int split_huge_page_to_list(struct page *page, struct list_head *list);
190 static inline int split_huge_page(struct page *page)  in split_huge_page()  argument
192 	return split_huge_page_to_list(page, NULL);  in split_huge_page()
194 void deferred_split_huge_page(struct page *page);
197 		unsigned long address, bool freeze, struct page *page);
210 		bool freeze, struct page *page);
254  * thp_head - Head page of a transparent huge page.
255  * @page: Any page (tail, head or regular) found in the page cache.
257 static inline struct page *thp_head(struct page *page)  in thp_head()  argument
259 	return compound_head(page);  in thp_head()
263  * thp_order - Order of a transparent huge page.
264  * @page: Head page of a transparent huge page.
266 static inline unsigned int thp_order(struct page *page)  in thp_order()  argument
268 	VM_BUG_ON_PGFLAGS(PageTail(page), page);  in thp_order()
269 	if (PageHead(page))  in thp_order()
275  * thp_nr_pages - The number of regular pages in this huge page.
276  * @page: The head page of a huge page.
278 static inline int thp_nr_pages(struct page *page)  in thp_nr_pages()  argument
280 	VM_BUG_ON_PGFLAGS(PageTail(page), page);  in thp_nr_pages()
281 	if (PageHead(page))  in thp_nr_pages()
286 struct page *follow_devmap_pmd(struct vm_area_struct *vma, unsigned long addr,
288 struct page *follow_devmap_pud(struct vm_area_struct *vma, unsigned long addr,
293 extern struct page *huge_zero_page;
296 static inline bool is_huge_zero_page(struct page *page)  in is_huge_zero_page()  argument
298 	return READ_ONCE(huge_zero_page) == page;  in is_huge_zero_page()
311 struct page *mm_get_huge_zero_page(struct mm_struct *mm);
314 #define mk_huge_pmd(page, prot) pmd_mkhuge(mk_pmd(page, prot))  argument
321 static inline struct list_head *page_deferred_list(struct page *page)  in page_deferred_list()  argument
327 	return &page[2].deferred_list;  in page_deferred_list()
339 static inline struct page *thp_head(struct page *page)  in thp_head()  argument
341 	VM_BUG_ON_PGFLAGS(PageTail(page), page);  in thp_head()
342 	return page;  in thp_head()
345 static inline unsigned int thp_order(struct page *page)  in thp_order()  argument
347 	VM_BUG_ON_PGFLAGS(PageTail(page), page);  in thp_order()
351 static inline int thp_nr_pages(struct page *page)  in thp_nr_pages()  argument
353 	VM_BUG_ON_PGFLAGS(PageTail(page), page);  in thp_nr_pages()
379 static inline void prep_transhuge_page(struct page *page) {}  in prep_transhuge_page()  argument
381 static inline bool is_transparent_hugepage(struct page *page)  in is_transparent_hugepage()  argument
391 can_split_huge_page(struct page *page, int *pextra_pins)  in can_split_huge_page()  argument
397 split_huge_page_to_list(struct page *page, struct list_head *list)  in split_huge_page_to_list()  argument
401 static inline int split_huge_page(struct page *page)  in split_huge_page()  argument
405 static inline void deferred_split_huge_page(struct page *page) {}  in deferred_split_huge_page()  argument
410 		unsigned long address, bool freeze, struct page *page) {}  in __split_huge_pmd()  argument
412 		unsigned long address, bool freeze, struct page *page) {}  in split_huge_pmd_address()  argument
449 static inline bool is_huge_zero_page(struct page *page)  in is_huge_zero_page()  argument
469 static inline struct page *follow_devmap_pmd(struct vm_area_struct *vma,  in follow_devmap_pmd()
475 static inline struct page *follow_devmap_pud(struct vm_area_struct *vma,  in follow_devmap_pud()
488  * thp_size - Size of a transparent huge page.
489  * @page: Head page of a transparent huge page.
491  * Return: Number of bytes in this page.
493 static inline unsigned long thp_size(struct page *page)  in thp_size()  argument
495 	return PAGE_SIZE << thp_order(page);  in thp_size()