X-Git-Url: https://git.openpandora.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=mm%2Fswap.c;h=2e0e871f542f45da3bddacbbe5fe4647339e1729;hb=e86070c83e9110e89800274385c013db602b1444;hp=990868afc1c6aed8d3716af0fcea25d4e6776d8f;hpb=936813a8807c5684c6a97f1081b31027403d4a93;p=pandora-kernel.git

diff --git a/mm/swap.c b/mm/swap.c
index 990868afc1c6..2e0e871f542f 100644
--- a/mm/swap.c
+++ b/mm/swap.c
@@ -34,6 +34,25 @@
 /* How many pages do we try to swap or page in/out together? */
 int page_cluster;
 
+/*
+ * This path almost never happens for VM activity - pages are normally
+ * freed via pagevecs.  But it gets used by networking.
+ */
+static void fastcall __page_cache_release(struct page *page)
+{
+	if (PageLRU(page)) {
+		unsigned long flags;
+		struct zone *zone = page_zone(page);
+
+		spin_lock_irqsave(&zone->lru_lock, flags);
+		VM_BUG_ON(!PageLRU(page));
+		__ClearPageLRU(page);
+		del_page_from_lru(zone, page);
+		spin_unlock_irqrestore(&zone->lru_lock, flags);
+	}
+	free_hot_page(page);
+}
+
 static void put_compound_page(struct page *page)
 {
 	page = (struct page *)page_private(page);
@@ -54,6 +73,26 @@ 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
@@ -87,7 +126,7 @@ int rotate_reclaimable_page(struct page *page)
 	spin_lock_irqsave(&zone->lru_lock, flags);
 	if (PageLRU(page) && !PageActive(page)) {
 		list_move_tail(&page->lru, &zone->inactive_list);
-		inc_page_state(pgrotated);
+		__count_vm_event(PGROTATED);
 	}
 	if (!test_clear_page_writeback(page))
 		BUG();
@@ -107,7 +146,7 @@ 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);
 }
@@ -202,26 +241,6 @@ int lru_add_drain_all(void)
 }
 #endif
 
-/*
- * This path almost never happens for VM activity - pages are normally
- * freed via pagevecs.  But it gets used by networking.
- */
-void fastcall __page_cache_release(struct page *page)
-{
-	if (PageLRU(page)) {
-		unsigned long flags;
-		struct zone *zone = page_zone(page);
-
-		spin_lock_irqsave(&zone->lru_lock, flags);
-		BUG_ON(!PageLRU(page));
-		__ClearPageLRU(page);
-		del_page_from_lru(zone, page);
-		spin_unlock_irqrestore(&zone->lru_lock, flags);
-	}
-	free_hot_page(page);
-}
-EXPORT_SYMBOL(__page_cache_release);
-
 /*
  * Batched page_cache_release().  Decrement the reference count on all the
  * passed pages.  If it fell to zero then remove the page from the LRU and
@@ -264,7 +283,7 @@ 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);
 		}
@@ -317,7 +336,7 @@ 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);
 	}
@@ -344,7 +363,7 @@ 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);
 	}
@@ -371,9 +390,9 @@ 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);
 	}