Index: stable/9/sys/ofed/include/linux/compiler.h
===================================================================
--- stable/9/sys/ofed/include/linux/compiler.h	(revision 322500)
+++ stable/9/sys/ofed/include/linux/compiler.h	(revision 322501)
@@ -1,66 +1,83 @@
 /*-
  * Copyright (c) 2010 Isilon Systems, Inc.
  * Copyright (c) 2010 iX Systems, Inc.
  * Copyright (c) 2010 Panasas, Inc.
  * Copyright (c) 2013, 2014 Mellanox Technologies, Ltd.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice unmodified, this list of conditions, and the following
  *    disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
  *    documentation and/or other materials provided with the distribution.
  *
  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #ifndef	_LINUX_COMPILER_H_
 #define	_LINUX_COMPILER_H_
 
 #include <sys/cdefs.h>
 
 #define __user
 #define __kernel
 #define __safe
 #define __force
 #define __nocast
 #define __iomem
 #define __chk_user_ptr(x)		0
 #define __chk_io_ptr(x)			0
 #define __builtin_warning(x, y...)	(1)
 #define __acquires(x)
 #define __releases(x)
 #define __acquire(x)			0
 #define __release(x)			0
 #define __cond_lock(x,c)		(c)
 #define	__bitwise
 #define __devinitdata
 #define __init
 #define	__devinit
 #define	__devexit
 #define __exit
 #define	__stringify(x)			#x
 #define	__attribute_const__		__attribute__((__const__))
 #undef __always_inline
 #define	__always_inline			inline
 
 #define	likely(x)			__builtin_expect(!!(x), 1)
 #define	unlikely(x)			__builtin_expect(!!(x), 0)
 #define typeof(x)			__typeof(x)
 
 #define	uninitialized_var(x)		x = x
 
+#define	ACCESS_ONCE(x)			(*(volatile __typeof(x) *)&(x))
+  
+#define	WRITE_ONCE(x,v) do {		\
+	barrier();			\
+	ACCESS_ONCE(x) = (v);		\
+	barrier();			\
+} while (0)
+
+#define	READ_ONCE(x) ({			\
+	__typeof(x) __var = ({		\
+		barrier();		\
+		ACCESS_ONCE(x);		\
+	});				\
+	barrier();			\
+	__var;				\
+})
+
 #endif	/* _LINUX_COMPILER_H_ */
Index: stable/9/sys
===================================================================
--- stable/9/sys	(revision 322500)
+++ stable/9/sys	(revision 322501)

Property changes on: stable/9/sys
___________________________________________________________________
Modified: svn:mergeinfo
## -0,0 +0,1 ##
   Merged /head/sys:r292537,314878