[PATCH] fix alpha breakage

[Al Viro]

	barrier.h uses barrier() in non-SMP case.  And doesn't include
compiler.h.

Signed-off-by: Al Viro <viro@xxxxxxxxxxxxxxxxxx>
----
diff -urN RC14-rc5-git5-base/include/asm-alpha/barrier.h current/include/asm-alpha/barrier.h
--- RC14-rc5-git5-base/include/asm-alpha/barrier.h	2005-10-26 01:00:39.000000000 -0400
+++ current/include/asm-alpha/barrier.h	2005-10-26 03:38:24.000000000 -0400
@@ -1,6 +1,8 @@
 #ifndef __BARRIER_H
 #define __BARRIER_H
 
+#include <linux/compiler.h>
+
 #define mb() \
 __asm__ __volatile__("mb": : :"memory")
 
-
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