--- linux-2.6.20.x86_64/mm/vmscan.c.swapfull	2007-02-16 06:47:02.000000000 -0500
+++ linux-2.6.20.x86_64/mm/vmscan.c	2007-02-16 07:03:30.000000000 -0500
@@ -587,6 +587,9 @@ free_it:
 		continue;
 
 activate_locked:
+		/* Not a candidate for swapping, so reclaim swap space. */
+		if (PageSwapCache(page) && vm_swap_full())
+			remove_exclusive_swap_page(page);
 		SetPageActive(page);
 		pgactivate++;
 keep_locked:
@@ -875,6 +878,11 @@ force_reclaim_mapped:
 		pagevec_strip(&pvec);
 		spin_lock_irq(&zone->lru_lock);
 	}
+	if (vm_swap_full()) {
+		spin_unlock_irq(&zone->lru_lock);
+		pagevec_swap_free(&pvec);
+		spin_lock_irq(&zone->lru_lock);
+	}
 
 	pgmoved = 0;
 	while (!list_empty(&l_active)) {
--- linux-2.6.20.x86_64/mm/swap.c.swapfull	2007-02-16 07:09:38.000000000 -0500
+++ linux-2.6.20.x86_64/mm/swap.c	2007-02-16 07:05:00.000000000 -0500
@@ -420,6 +420,24 @@ void pagevec_strip(struct pagevec *pvec)
 	}
 }
 
+/*
+ * Try to free swap space from the pages in a pagevec
+ */
+void pagevec_swap_free(struct pagevec *pvec)
+{
+	int i;
+
+	for (i = 0; i < pagevec_count(pvec); i++) {
+		struct page *page = pvec->pages[i];
+
+		if (PageSwapCache(page) && !TestSetPageLocked(page)) {
+			if (PageSwapCache(page))
+				remove_exclusive_swap_page(page);
+			unlock_page(page);
+		}
+	}
+}
+
 /**
  * pagevec_lookup - gang pagecache lookup
  * @pvec:	Where the resulting pages are placed
--- linux-2.6.20.x86_64/include/linux/pagevec.h.swapfull	2007-02-16 07:06:29.000000000 -0500
+++ linux-2.6.20.x86_64/include/linux/pagevec.h	2007-02-16 07:06:41.000000000 -0500
@@ -26,6 +26,7 @@ void __pagevec_free(struct pagevec *pvec
 void __pagevec_lru_add(struct pagevec *pvec);
 void __pagevec_lru_add_active(struct pagevec *pvec);
 void pagevec_strip(struct pagevec *pvec);
+void pagevec_swap_free(struct pagevec *pvec);
 unsigned pagevec_lookup(struct pagevec *pvec, struct address_space *mapping,
 		pgoff_t start, unsigned nr_pages);
 unsigned pagevec_lookup_tag(struct pagevec *pvec,