--- cowloop-3.0/src/cowloop.c.orig	2009-01-31 07:31:18.000000000 +1100
+++ cowloop-3.0/src/cowloop.c	2009-01-31 07:32:46.000000000 +1100
@@ -250,7 +250,11 @@
 #include <linux/stat.h>
 #include <linux/vmalloc.h>
 #include <linux/slab.h>
+#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,27))
 #include <asm/semaphore.h>
+#else
+#include <linux/semaphore.h>
+#endif
 #include <asm/uaccess.h>
 #include <linux/proc_fs.h>
 #include <linux/blkdev.h>