1#ifndef __LINUX_PAGE_OWNER_H
2#define __LINUX_PAGE_OWNER_H
3
4#ifdef CONFIG_PAGE_OWNER
5extern bool page_owner_inited;
6extern struct page_ext_operations page_owner_ops;
7
8extern void __reset_page_owner(struct page *page, unsigned int order);
9extern void __set_page_owner(struct page *page,
10			unsigned int order, gfp_t gfp_mask);
11extern gfp_t __get_page_owner_gfp(struct page *page);
12
13static inline void reset_page_owner(struct page *page, unsigned int order)
14{
15	if (likely(!page_owner_inited))
16		return;
17
18	__reset_page_owner(page, order);
19}
20
21static inline void set_page_owner(struct page *page,
22			unsigned int order, gfp_t gfp_mask)
23{
24	if (likely(!page_owner_inited))
25		return;
26
27	__set_page_owner(page, order, gfp_mask);
28}
29
30static inline gfp_t get_page_owner_gfp(struct page *page)
31{
32	if (likely(!page_owner_inited))
33		return 0;
34
35	return __get_page_owner_gfp(page);
36}
37#else
38static inline void reset_page_owner(struct page *page, unsigned int order)
39{
40}
41static inline void set_page_owner(struct page *page,
42			unsigned int order, gfp_t gfp_mask)
43{
44}
45static inline gfp_t get_page_owner_gfp(struct page *page)
46{
47	return 0;
48}
49
50#endif /* CONFIG_PAGE_OWNER */
51#endif /* __LINUX_PAGE_OWNER_H */
52