[PATCH] s390 need definitions for pagefault_disable and pagefault_enable

[Andy Whitcroft]

s390: need definitions for pagefault_disable and pagefault_enable

Seems that when the changes for user futex's went into 2.6.19-rc4-mm2
s390 was missed.  Leading to the following compile failure:

    arch/s390/lib/lib.a(uaccess_std.o)(.text+0x37c): In function
						    `futex_atomic_op':
    : undefined reference to `pagefault_disable'
    arch/s390/lib/lib.a(uaccess_std.o)(.text+0x3cc): In function
						    `futex_atomic_op':
    : undefined reference to `pagefault_enable'
    [...]

This seems to be enough to get testing working again.

Signed-off-by: Andy Whitcroft <apw@xxxxxxxxxxxx>
---
diff --git a/arch/s390/lib/uaccess_std.c b/arch/s390/lib/uaccess_std.c
index 9bbeaa0..ad296dc 100644
--- a/arch/s390/lib/uaccess_std.c
+++ b/arch/s390/lib/uaccess_std.c
@@ -11,6 +11,8 @@
 
 #include <linux/errno.h>
 #include <linux/mm.h>
+#include <linux/uaccess.h>
+
 #include <asm/uaccess.h>
 #include <asm/futex.h>
 
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