From: Stephen Rothwell <sfr@canb.auug.org.au>
Date: Fri, 20 May 2011 01:11:53 +0000 (+1000)
Subject: signal.h need a definition of struct task_struct
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=1477fcc290b3d5c2614bde98bf3b1154c538860d;p=GitHub%2FLineageOS%2Fandroid_kernel_samsung_universal7580.git

signal.h need a definition of struct task_struct

This 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
  ..

Exposed by commit e66eed651fd1 ("list: remove prefetching from regular
list iterators"), which removed the include of <linux/prefetch.h> from
<linux/list.h>.

Without that, linux/signal.h no longer accidentally got the declaration
of 'struct task_struct'.

Fix by properly declaring the struct, rather than introducing any new
header file dependency.

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

diff --git a/include/linux/signal.h b/include/linux/signal.h
index fcd2b14b193..29a68ac7af8 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;
 /*