[PATCH] s390: add support for unshare system call

Add support for unshare system call.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
diff --git a/arch/s390/kernel/compat_wrapper.S b/arch/s390/kernel/compat_wrapper.S
index 83b33fe..38a6ef5 100644
--- a/arch/s390/kernel/compat_wrapper.S
+++ b/arch/s390/kernel/compat_wrapper.S
@@ -1602,3 +1602,8 @@
 	llgtr	%r5,%r5			# const sigset_t *
 	llgfr	%r6,%r6			# size_t
 	jg	compat_sys_ppoll
+
+	.globl sys_unshare_wrapper
+sys_unshare_wrapper:
+	llgfr	%r2,%r2			# unsigned long
+	jg	sys_unshare