diff --git a/net/rds/page.c b/net/rds/page.c
index d8acdeb..b82d63e 100644
--- a/net/rds/page.c
+++ b/net/rds/page.c
@@ -32,6 +32,7 @@
  */
 #include <linux/highmem.h>
 #include <linux/gfp.h>
+#include <linux/cpu.h>
 
 #include "rds.h"