include/linux/mm_inline.h

   1 static inline void
   2 add_page_to_lru_list(struct zone *zone, struct page *page, enum lru_list l)
   3 {
   4         list_add(&page->lru, &zone->lru[l].list);
   5         __inc_zone_state(zone, NR_LRU_BASE + l);
   6 }
   7
   8 static inline void
   9 del_page_from_lru_list(struct zone *zone, struct page *page, enum lru_list l)
  10 {
  11         list_del(&page->lru);
  12         __dec_zone_state(zone, NR_LRU_BASE + l);
  13 }
  14
  15 static inline void
  16 add_page_to_active_list(struct zone *zone, struct page *page)
  17 {
  18         add_page_to_lru_list(zone, page, LRU_ACTIVE);
  19 }
  20
  21 static inline void
  22 add_page_to_inactive_list(struct zone *zone, struct page *page)
  23 {
  24         add_page_to_lru_list(zone, page, LRU_INACTIVE);
  25 }
  26
  27 static inline void
  28 del_page_from_active_list(struct zone *zone, struct page *page)
  29 {
  30         del_page_from_lru_list(zone, page, LRU_ACTIVE);
  31 }
  32
  33 static inline void
  34 del_page_from_inactive_list(struct zone *zone, struct page *page)
  35 {
  36         del_page_from_lru_list(zone, page, LRU_INACTIVE);
  37 }
  38
  39 static inline void
  40 del_page_from_lru(struct zone *zone, struct page *page)
  41 {
  42         enum lru_list l = LRU_INACTIVE;
  43
  44         list_del(&page->lru);
  45         if (PageActive(page)) {
  46                 __ClearPageActive(page);
  47                 l = LRU_ACTIVE;
  48         }
  49         __dec_zone_state(zone, NR_LRU_BASE + l);
  50 }
  51
  52 /**
  53  * page_lru - which LRU list should a page be on?
  54  * @page: the page to test
  55  *
  56  * Returns the LRU list a page should be on, as an index
  57  * into the array of LRU lists.
  58  */
  59 static inline enum lru_list page_lru(struct page *page)
  60 {
  61         enum lru_list lru = LRU_BASE;
  62
  63         if (PageActive(page))
  64                 lru += LRU_ACTIVE;
  65
  66         return lru;
  67 }