Index: linux-2.6/mm/quicklist.c
===================================================================
--- linux-2.6.orig/mm/quicklist.c	2008-01-02 13:13:41.000000000 -0800
+++ linux-2.6/mm/quicklist.c	2008-01-02 13:40:50.000000000 -0800
@@ -40,6 +40,9 @@ static long min_pages_to_free(struct qui
 
 	pages_to_free = q->nr_pages - max_pages(min_pages);
 
+	if (pages_to_free < 0)
+		return 0;
+
 	return min(pages_to_free, max_free);
 }
 
@@ -56,6 +59,8 @@ void quicklist_trim(int nr, void (*dtor)
 	if (q->nr_pages > min_pages) {
 		pages_to_free = min_pages_to_free(q, min_pages, max_free);
 
+		printk("cpu=%d nr_pages=%d min_pages=%d to_free=%d\n",
+				smp_processor_id(), q->nr_pages, min_pages, pages_to_free);
 		while (pages_to_free > 0) {
 			/*
 			 * We pass a gfp_t of 0 to quicklist_alloc here
@@ -68,6 +73,7 @@ void quicklist_trim(int nr, void (*dtor)
 			free_page((unsigned long)p);
 			pages_to_free--;
 		}
+		printk("end nr_pages=%d\n", q->nr_pages);
 	}
 	put_cpu_var(quicklist);
 }