include/linux/mm_inline.h

   1
   2 static inline void
   3 add_page_to_active_list(struct zone *zone, struct page *page)
   4 {
   5         list_add(&page->lru, &zone->active_list);
   6         zone->nr_active++;
   7 }
   8
   9 static inline void
  10 add_page_to_inactive_list(struct zone *zone, struct page *page)
  11 {
  12         list_add(&page->lru, &zone->inactive_list);
  13         zone->nr_inactive++;
  14 }
  15
  16 static inline void
  17 del_page_from_active_list(struct zone *zone, struct page *page)
  18 {
  19         list_del(&page->lru);
  20         zone->nr_active--;
  21 }
  22
  23 static inline void
  24 del_page_from_inactive_list(struct zone *zone, struct page *page)
  25 {
  26         list_del(&page->lru);
  27         zone->nr_inactive--;
  28 }
  29
  30 static inline void
  31 del_page_from_lru(struct zone *zone, struct page *page)
  32 {
  33         list_del(&page->lru);
  34         if (PageActive(page)) {
  35                 ClearPageActive(page);
  36                 zone->nr_active--;
  37         } else {
  38                 zone->nr_inactive--;
  39         }
  40 }
  41
  42 /*
  43  * Isolate one page from the LRU lists.
  44  *
  45  * - zone->lru_lock must be held
  46  */
  47 static inline int __isolate_lru_page(struct page *page)
  48 {
  49         if (unlikely(!TestClearPageLRU(page)))
  50                 return 0;
  51
  52         if (get_page_testone(page)) {
  53                 /*
  54                  * It is being freed elsewhere
  55                  */
  56                 __put_page(page);
  57                 SetPageLRU(page);
  58                 return -ENOENT;
  59         }
  60
  61         return 1;
  62 }