--- a/usr/src/uts/common/fs/zfs/sys/zfs_context.h	Mon May 16 00:20:30 2011 +0100
+++ b/usr/src/uts/common/fs/zfs/sys/zfs_context.h	Wed Jul 27 07:13:44 2011 -0700
@@ -22,6 +22,9 @@
  * Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
  * Use is subject to license terms.
  */
+/*
+ * Copyright 2011 Nexenta Systems, Inc.  All rights reserved.
+ */
 
 #ifndef _SYS_ZFS_CONTEXT_H
 #define	_SYS_ZFS_CONTEXT_H
@@ -39,6 +42,7 @@
 #include <sys/cmn_err.h>
 #include <sys/kmem.h>
 #include <sys/taskq.h>
+#include <sys/taskq_impl.h>
 #include <sys/buf.h>
 #include <sys/param.h>
 #include <sys/systm.h>