From 1129585a08baf58582c0da91e572cb29e3179acf Mon Sep 17 00:00:00 2001
From: Vitaly Mayatskikh <v.mayatskih@gmail.com>
Date: Wed, 2 Jul 2008 15:48:21 +0200
Subject: x86: introduce copy_user_handle_tail() routine

Introduce generic C routine for handling necessary tail operations after
protection fault in copy_*_user on x86.

Signed-off-by: Vitaly Mayatskikh <v.mayatskih@gmail.com>
Acked-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
---
 include/asm-x86/uaccess_64.h | 3 +++
 1 file changed, 3 insertions(+)

(limited to 'include')

diff --git a/include/asm-x86/uaccess_64.h b/include/asm-x86/uaccess_64.h
index 4e3ec004e14..515d4dce96b 100644
--- a/include/asm-x86/uaccess_64.h
+++ b/include/asm-x86/uaccess_64.h
@@ -195,4 +195,7 @@ static inline int __copy_from_user_inatomic_nocache(void *dst,
 	return __copy_user_nocache(dst, src, size, 0);
 }
 
+unsigned long
+copy_user_handle_tail(char *to, char *from, unsigned len, unsigned zerorest);
+
 #endif /* __X86_64_UACCESS_H */
-- 
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