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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 e66eed651f ("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>
This commit is contained in:
Stephen Rothwell 2011-05-20 11:11:53 +10:00 committed by Linus Torvalds
parent eb04f2f04e
commit 1477fcc290
1 changed files with 2 additions and 0 deletions
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2
include/linux/signal.h
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@ -7,6 +7,8 @@
#ifdef __KERNEL__
#include <linux/list.h>
struct task_struct;
/* for sysctl */
extern int print_fatal_signals;
/*