--- linux-2.6.10.orig/mm/page_alloc.c 2004-12-25 05:33:51.000000000 +0800
+++ linux-2.6.10/mm/page_alloc.c 2005-01-21 11:43:44.000000000 +0800
@@ -788,7 +788,22 @@
fastcall void __free_pages(struct page *page, unsigned int order)
{
- if (!PageReserved(page) && put_page_testzero(page)) {
+ if (!PageReserved(page)) {
+#ifdef CONFIG_MMU
+ if (!put_page_testzero(page))
+ return;
+#else
+ int i, result = 1;
+
+ /*
+ * We need to de-reference all the pages for this order -- see
set_page_refs()
+ */
+ for (i = 0; i < (1 << order); i++)
+ result &= put_page_testzero(page+i);
+ if (!result)
+ BUG();
+#endif /* CONFIG_MMU */
+
if (order == 0)
free_hot_page(page);
else
--
Rongkai Zhan
-
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