kmap() has to be a function since page_address(page) may do nothing

else than return the page->virtual.

1 files changed, 5 insertions, 1 deletions

diff --git a/include/linux/highmem.h b/include/linux/highmem.h
index 3049ad259..1f59c2926 100644
--- a/include/linux/highmem.h
+++ b/include/linux/highmem.h
@@ -23,7 +23,11 @@ extern struct buffer_head * create_bounce(int rw, struct buffer_head * bh_orig);
 extern inline unsigned int nr_free_highpages(void) { return 0; }
 #define prepare_highmem_swapout(page) page
 #define replace_with_highmem(page) page
-#define kmap(page) page_address(page)
+
+static __inline__ unsigned long kmap(struct page * page) {
+	return page_address(page);
+}
+
 #define kunmap(page) do { } while (0)
 
 #endif /* CONFIG_HIGHMEM */