1 #ifndef __LINUX_PAGE_OWNER_H
2 #define __LINUX_PAGE_OWNER_H
3
4 #ifdef CONFIG_PAGE_OWNER
5 extern bool page_owner_inited;
6 extern struct page_ext_operations page_owner_ops;
7
8 extern void __reset_page_owner(struct page *page, unsigned int order);
9 extern void __set_page_owner(struct page *page,
10 unsigned int order, gfp_t gfp_mask);
11 extern gfp_t __get_page_owner_gfp(struct page *page);
12
reset_page_owner(struct page * page,unsigned int order)13 static 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
set_page_owner(struct page * page,unsigned int order,gfp_t gfp_mask)21 static 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
get_page_owner_gfp(struct page * page)30 static 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
reset_page_owner(struct page * page,unsigned int order)38 static inline void reset_page_owner(struct page *page, unsigned int order)
39 {
40 }
set_page_owner(struct page * page,unsigned int order,gfp_t gfp_mask)41 static inline void set_page_owner(struct page *page,
42 unsigned int order, gfp_t gfp_mask)
43 {
44 }
get_page_owner_gfp(struct page * page)45 static 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