kernel/include/linux/page_owner.h

   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
  12 static inline void reset_page_owner(struct page *page, unsigned int order)
  13 {
  14         if (likely(!page_owner_inited))
  15                 return;
  16
  17         __reset_page_owner(page, order);
  18 }
  19
  20 static inline void set_page_owner(struct page *page,
  21                         unsigned int order, gfp_t gfp_mask)
  22 {
  23         if (likely(!page_owner_inited))
  24                 return;
  25
  26         __set_page_owner(page, order, gfp_mask);
  27 }
  28 #else
  29 static inline void reset_page_owner(struct page *page, unsigned int order)
  30 {
  31 }
  32 static inline void set_page_owner(struct page *page,
  33                         unsigned int order, gfp_t gfp_mask)
  34 {
  35 }
  36
  37 #endif /* CONFIG_PAGE_OWNER */
  38 #endif /* __LINUX_PAGE_OWNER_H */