X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=include%2Flinux%2Fhighmem.h;h=2a7e6c65c882f6b17b1d4037ed1c8a25637d7455;hb=6a77f38946aaee1cd85eeec6cf4229b204c15071;hp=7153aef34d5c21dfd21fe9723b698bc0528e631d;hpb=87fc8d1bb10cd459024a742c6a10961fefcef18f;p=linux-2.6.git

diff --git a/include/linux/highmem.h b/include/linux/highmem.h
index 7153aef34..2a7e6c65c 100644
--- a/include/linux/highmem.h
+++ b/include/linux/highmem.h
@@ -9,8 +9,6 @@
 
 #ifdef CONFIG_HIGHMEM
 
-extern struct page *highmem_start_page;
-
 #include <asm/highmem.h>
 
 /* declarations for linux/mm/highmem.c */
@@ -44,6 +42,19 @@ static inline void clear_user_highpage(struct page *page, unsigned long vaddr)
 	smp_wmb();
 }
 
+#ifndef __HAVE_ARCH_ALLOC_ZEROED_USER_HIGHPAGE
+static inline struct page *
+alloc_zeroed_user_highpage(struct vm_area_struct *vma, unsigned long vaddr)
+{
+	struct page *page = alloc_page_vma(GFP_HIGHUSER, vma, vaddr);
+
+	if (page)
+		clear_user_highpage(page, vaddr);
+
+	return page;
+}
+#endif
+
 static inline void clear_highpage(struct page *page)
 {
 	void *kaddr = kmap_atomic(page, KM_USER0);