+static inline void
+add_page_to_lru_list(struct zone *zone, struct page *page, enum lru_list l)
+{
+ list_add(&page->lru, &zone->lru[l].list);
+ __inc_zone_state(zone, NR_LRU_BASE + l);
+}
+
+static inline void
+del_page_from_lru_list(struct zone *zone, struct page *page, enum lru_list l)
+{
+ list_del(&page->lru);
+ __dec_zone_state(zone, NR_LRU_BASE + l);
+}
static inline void
add_page_to_active_list(struct zone *zone, struct page *page)
{
- list_add(&page->lru, &zone->active_list);
- zone->nr_active++;
+ add_page_to_lru_list(zone, page, LRU_ACTIVE);
}
static inline void
add_page_to_inactive_list(struct zone *zone, struct page *page)
{
- list_add(&page->lru, &zone->inactive_list);
- zone->nr_inactive++;
+ add_page_to_lru_list(zone, page, LRU_INACTIVE);
}
static inline void
del_page_from_active_list(struct zone *zone, struct page *page)
{
- list_del(&page->lru);
- zone->nr_active--;
+ del_page_from_lru_list(zone, page, LRU_ACTIVE);
}
static inline void
del_page_from_inactive_list(struct zone *zone, struct page *page)
{
- list_del(&page->lru);
- zone->nr_inactive--;
+ del_page_from_lru_list(zone, page, LRU_INACTIVE);
}
static inline void
del_page_from_lru(struct zone *zone, struct page *page)
{
+ enum lru_list l = LRU_INACTIVE;
+
list_del(&page->lru);
if (PageActive(page)) {
- ClearPageActive(page);
- zone->nr_active--;
- } else {
- zone->nr_inactive--;
+ __ClearPageActive(page);
+ l = LRU_ACTIVE;
}
+ __dec_zone_state(zone, NR_LRU_BASE + l);
}
-/*
- * Isolate one page from the LRU lists.
+/**
+ * page_lru - which LRU list should a page be on?
+ * @page: the page to test
*
- * - zone->lru_lock must be held
+ * Returns the LRU list a page should be on, as an index
+ * into the array of LRU lists.
*/
-static inline int __isolate_lru_page(struct page *page)
-{
- if (unlikely(!TestClearPageLRU(page)))
- return 0;
-
- if (get_page_testone(page)) {
- /*
- * It is being freed elsewhere
- */
- __put_page(page);
- SetPageLRU(page);
- return -ENOENT;
- }
+static inline enum lru_list page_lru(struct page *page)
+{
+ enum lru_list lru = LRU_BASE;
+
+ if (PageActive(page))
+ lru += LRU_ACTIVE;
- return 1;
+ return lru;
}