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Subject[PATCH 13/21] powerpc: Add missing prototype for arch_dup_task_struct
In commit 55ccf3fe3f9a ("fork: move the real prepare_to_copy() users to
arch_dup_task_struct()") a new arch_dup_task_struct was added without a
prototype declared in thread_info.h header. Fix the following warning
(treated as error in W=1):

CC arch/powerpc/kernel/process.o
arch/powerpc/kernel/process.c:1609:5: error: no previous prototype for ‘arch_dup_task_struct’ [-Werror=missing-prototypes]
int arch_dup_task_struct(struct task_struct *dst, struct task_struct *src)
cc1: all warnings being treated as errors

Signed-off-by: Mathieu Malaterre <>
arch/powerpc/include/asm/thread_info.h | 1 +
1 file changed, 1 insertion(+)

diff --git a/arch/powerpc/include/asm/thread_info.h b/arch/powerpc/include/asm/thread_info.h
index 4a12c00f8de3..5964145db03d 100644
--- a/arch/powerpc/include/asm/thread_info.h
+++ b/arch/powerpc/include/asm/thread_info.h
@@ -70,6 +70,7 @@ static inline struct thread_info *current_thread_info(void)
return (struct thread_info *)val;

+extern int arch_dup_task_struct(struct task_struct *dst, struct task_struct *src);
#endif /* __ASSEMBLY__ */

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