--- Linux/Kernel/Dm-target.c.orig	2007-10-11 17:09:44.000000000 +0000
+++ Linux/Kernel/Dm-target.c	2007-10-11 17:16:41.000000000 +0000
@@ -656,7 +656,12 @@
 		goto err;
 	}
 
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,23)
 	bio_ctx_cache = kmem_cache_create ("truecrypt-bioctx", sizeof (struct bio_ctx), 0, 0, NULL, NULL);
+#else 
+	bio_ctx_cache = kmem_cache_create ("truecrypt-bioctx", sizeof (struct bio_ctx), 0, 0, NULL);
+#endif
+
 	if (!bio_ctx_cache)
 	{
 		error ("kmem_cache_create failed");