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DateFri, 20 May 2011 11:15:16 +1000
FromStephen Rothwell <>
Subjectlinux-next: build failure in Linus' tree
Hi Linus,

With just Linus' tree, today's linux-next build (powerpc ppc64_defconfig)
failed like this:

In file included from arch/powerpc/mm/fault.c:18:
include/linux/signal.h:239: error: 'struct task_struct' declared inside parameter list
include/linux/signal.h:239: error: its scope is only this definition or declaration, which is probably not what you want
include/linux/signal.h:240: error: 'struct task_struct' declared inside parameter list
include/linux/signal.h:241: error: 'struct task_struct' declared inside parameter list
include/linux/signal.h:250: error: 'struct task_struct' declared inside parameter list
include/linux/signal.h:254: error: 'struct task_struct' declared inside parameter list
cc1: warnings being treated as errors

and so on ...

reverting commit e66eed651fd1 ("list: remove prefetching from regular
list iterators"). This is, of course, why we like to put stuff into
linux-next before it goes into your tree :-)

I have applied this patch for today:

From: Stephen Rothwell <sfr@canb.auug.org.au>
Date: Fri, 20 May 2011 11:11:53 +1000
Subject: [PATCH] signal.h need a definition of struct task_struct

fixes these build errors on powerpc:

In file included from arch/powerpc/mm/fault.c:18:
include/linux/signal.h:239: error: 'struct task_struct' declared inside parameter list
include/linux/signal.h:239: error: its scope is only this definition or declaration, which is probably not what you want
include/linux/signal.h:240: error: 'struct task_struct' declared inside parameter list
include/linux/signal.h:241: error: 'struct task_struct' declared inside parameter list
include/linux/signal.h:250: error: 'struct task_struct' declared inside parameter list
include/linux/signal.h:254: error: 'struct task_struct' declared inside parameter list
cc1: warnings being treated as errors

Exposed by commit e66eed651fd1 ("list: remove prefetching from regular
list iterators").

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
---
include/linux/signal.h | 2 ++
1 files changed, 2 insertions(+), 0 deletions(-)
diff --git a/include/linux/signal.h b/include/linux/signal.h
index fcd2b14..29a68ac 100644
--- a/include/linux/signal.h
+++ b/include/linux/signal.h
@@ -7,6 +7,8 @@
#ifdef __KERNEL__
#include <linux/list.h>

+struct task_struct;
+
/* for sysctl */
extern int print_fatal_signals;
/*
--
1.7.5.1
--
Cheers,
Stephen Rothwell sfr@canb.auug.org.au
http://www.canb.auug.org.au/~sfr/


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