X-Git-Url: http://pilppa.org/gitweb/?a=blobdiff_plain;f=mm%2Finternal.h;h=a3110c02aea7d4b6f8edbd06e5a06477d3c2fc8b;hb=08fb105540f4649eaa25270ec3ada1d35406afcc;hp=7bb3397798188af758947b19f0dc6dd945bf30d2;hpb=84097518d1ecd2330f9488e4c2d09953a3340e74;p=linux-2.6-omap-h63xx.git

diff --git a/mm/internal.h b/mm/internal.h
index 7bb33977981..a3110c02aea 100644
--- a/mm/internal.h
+++ b/mm/internal.h
@@ -13,8 +13,19 @@
 
 #include <linux/mm.h>
 
-static inline void set_page_refs(struct page *page, int order)
+static inline void set_page_count(struct page *page, int v)
 {
+	atomic_set(&page->_count, v);
+}
+
+/*
+ * Turn a non-refcounted page (->_count == 0) into refcounted with
+ * a count of one.
+ */
+static inline void set_page_refcounted(struct page *page)
+{
+	VM_BUG_ON(PageCompound(page) && PageTail(page));
+	VM_BUG_ON(atomic_read(&page->_count));
 	set_page_count(page, 1);
 }