X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=mm%2Fhighmem.c;fp=mm%2Fhighmem.c;h=a02c6dec910cfe12f5c45592e316d5fa9c549205;hb=4e76c8a9fa413ccc09d3f7f664183dcce3555d57;hp=9b274fdf9d08d66c3ec78ae396284a6a0c70ac61;hpb=1db395853d4f30d6120458bd279ede1f882a8525;p=linux-2.6.git

diff --git a/mm/highmem.c b/mm/highmem.c
index 9b274fdf9..a02c6dec9 100644
--- a/mm/highmem.c
+++ b/mm/highmem.c
@@ -142,6 +142,17 @@ start:
 	return vaddr;
 }
 
+#ifdef CONFIG_XEN
+void kmap_flush_unused(void)
+{
+	spin_lock(&kmap_lock);
+	flush_all_zero_pkmaps();
+	spin_unlock(&kmap_lock);
+}
+
+EXPORT_SYMBOL(kmap_flush_unused);
+#endif
+
 void fastcall *kmap_high(struct page *page)
 {
 	unsigned long vaddr;