X-Git-Url: http://git.cascardo.info/?a=blobdiff_plain;f=mm%2Fswap.c;h=600235e43704f0b4e2628a908b54f13a8de5c695;hb=725d704ecaca4a43f067092c140d4f3271cf2856;hp=03ae2076f92fe9bd113fe55239fdcfb431cd0265;hpb=62ed948cb1405fe95d61d8c6445c102e0c9da0a6;p=cascardo%2Flinux.git

diff --git a/mm/swap.c b/mm/swap.c
index 03ae2076f92f..600235e43704 100644
--- a/mm/swap.c
+++ b/mm/swap.c
@@ -54,6 +54,26 @@ void put_page(struct page *page)
 }
 EXPORT_SYMBOL(put_page);
 
+/**
+ * put_pages_list(): release a list of pages
+ *
+ * Release a list of pages which are strung together on page.lru.  Currently
+ * used by read_cache_pages() and related error recovery code.
+ *
+ * @pages: list of pages threaded on page->lru
+ */
+void put_pages_list(struct list_head *pages)
+{
+	while (!list_empty(pages)) {
+		struct page *victim;
+
+		victim = list_entry(pages->prev, struct page, lru);
+		list_del(&victim->lru);
+		page_cache_release(victim);
+	}
+}
+EXPORT_SYMBOL(put_pages_list);
+
 /*
  * Writeback is about to end against a page which has been marked for immediate
  * reclaim.  If it still appears to be reclaimable, move it to the tail of the
@@ -86,9 +106,8 @@ int rotate_reclaimable_page(struct page *page)
 	zone = page_zone(page);
 	spin_lock_irqsave(&zone->lru_lock, flags);
 	if (PageLRU(page) && !PageActive(page)) {
-		list_del(&page->lru);
-		list_add_tail(&page->lru, &zone->inactive_list);
-		inc_page_state(pgrotated);
+		list_move_tail(&page->lru, &zone->inactive_list);
+		__count_vm_event(PGROTATED);
 	}
 	if (!test_clear_page_writeback(page))
 		BUG();
@@ -108,7 +127,7 @@ void fastcall activate_page(struct page *page)
 		del_page_from_inactive_list(zone, page);
 		SetPageActive(page);
 		add_page_to_active_list(zone, page);
-		inc_page_state(pgactivate);
+		__count_vm_event(PGACTIVATE);
 	}
 	spin_unlock_irq(&zone->lru_lock);
 }
@@ -214,7 +233,7 @@ void fastcall __page_cache_release(struct page *page)
 		struct zone *zone = page_zone(page);
 
 		spin_lock_irqsave(&zone->lru_lock, flags);
-		BUG_ON(!PageLRU(page));
+		VM_BUG_ON(!PageLRU(page));
 		__ClearPageLRU(page);
 		del_page_from_lru(zone, page);
 		spin_unlock_irqrestore(&zone->lru_lock, flags);
@@ -265,7 +284,7 @@ void release_pages(struct page **pages, int nr, int cold)
 				zone = pagezone;
 				spin_lock_irq(&zone->lru_lock);
 			}
-			BUG_ON(!PageLRU(page));
+			VM_BUG_ON(!PageLRU(page));
 			__ClearPageLRU(page);
 			del_page_from_lru(zone, page);
 		}
@@ -318,7 +337,7 @@ void __pagevec_release_nonlru(struct pagevec *pvec)
 	for (i = 0; i < pagevec_count(pvec); i++) {
 		struct page *page = pvec->pages[i];
 
-		BUG_ON(PageLRU(page));
+		VM_BUG_ON(PageLRU(page));
 		if (put_page_testzero(page))
 			pagevec_add(&pages_to_free, page);
 	}
@@ -345,7 +364,7 @@ void __pagevec_lru_add(struct pagevec *pvec)
 			zone = pagezone;
 			spin_lock_irq(&zone->lru_lock);
 		}
-		BUG_ON(PageLRU(page));
+		VM_BUG_ON(PageLRU(page));
 		SetPageLRU(page);
 		add_page_to_inactive_list(zone, page);
 	}
@@ -372,9 +391,9 @@ void __pagevec_lru_add_active(struct pagevec *pvec)
 			zone = pagezone;
 			spin_lock_irq(&zone->lru_lock);
 		}
-		BUG_ON(PageLRU(page));
+		VM_BUG_ON(PageLRU(page));
 		SetPageLRU(page);
-		BUG_ON(PageActive(page));
+		VM_BUG_ON(PageActive(page));
 		SetPageActive(page);
 		add_page_to_active_list(zone, page);
 	}