diff --git a/fs/exofs/ios.c b/fs/exofs/ios.c
index 5293bc4..4337cad 100644
--- a/fs/exofs/ios.c
+++ b/fs/exofs/ios.c
@@ -22,6 +22,7 @@
  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  */
 
+#include <linux/slab.h>
 #include <scsi/scsi_device.h>
 #include <asm/div64.h>