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