[PATCH] headers: linux/mutex.h: drop linkage.h

[Randy Dunlap]

From: Randy Dunlap <rdunlap@xxxxxxxxxxxxx>

<linux/mutex.h> does not use nor need <linux/linkage.h>, so drop that
one header file from mutex.h.

<linux/mutex.h> is currently #included in around 1250 C source files
(oops, I didn't count other header files that #include it), making it
the 27th most-used header file.

Build tested on i386 and x86_64 * (allnoconfig, tiny.config, defconfig,
allyesconfig, and allmodconfig) and x64_64 allmodconfig + SMP=disabled.

Signed-off-by: Randy Dunlap <rdunlap@xxxxxxxxxxxxx>
---
Ingo/Thomas, please include this in tip.git for more thorough testing.

 include/linux/mutex.h |    1 -
 1 file changed, 1 deletion(-)

--- linux.orig/include/linux/mutex.h
+++ linux.next/include/linux/mutex.h
@@ -14,7 +14,6 @@
 #include <asm/current.h>
 #include <linux/list.h>
 #include <linux/spinlock_types.h>
-#include <linux/linkage.h>
 #include <linux/lockdep.h>
 #include <linux/atomic.h>
 #include <asm/processor.h>