[S390] wire up preadv/pwritev system calls

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

arch/s390/include/asm/unistd.h

@@ -265,7 +265,9 @@
 #define __NR_pipe2		325
 #define __NR_dup3		326
 #define __NR_epoll_create1	327
-#define NR_syscalls 328
+#define	__NR_preadv		328
+#define	__NR_pwritev		329
+#define NR_syscalls 330
 
 /* 
  * There are some system calls that are not present on 64 bit, some

arch/s390/kernel/compat_wrapper.S

@@ -1805,3 +1805,21 @@ compat_sys_keyctl_wrapper:
 	llgfr	%r5,%r5			# u32
 	llgfr	%r6,%r6			# u32
 	jg	compat_sys_keyctl	# branch to system call
+
+	.globl	compat_sys_preadv_wrapper
+compat_sys_preadv_wrapper:
+	llgfr	%r2,%r2			# unsigned long
+	llgtr	%r3,%r3			# compat_iovec *
+	llgfr	%r4,%r4			# unsigned long
+	llgfr	%r5,%r5			# u32
+	llgfr	%r6,%r6			# u32
+	jg	compat_sys_preadv	# branch to system call
+
+	.globl	compat_sys_pwritev_wrapper
+compat_sys_pwritev_wrapper:
+	llgfr	%r2,%r2			# unsigned long
+	llgtr	%r3,%r3			# compat_iovec *
+	llgfr	%r4,%r4			# unsigned long
+	llgfr	%r5,%r5			# u32
+	llgfr	%r6,%r6			# u32
+	jg	compat_sys_pwritev	# branch to system call

arch/s390/kernel/syscalls.S

@@ -336,3 +336,5 @@ SYSCALL(sys_inotify_init1,sys_inotify_init1,sys_inotify_init1_wrapper)
 SYSCALL(sys_pipe2,sys_pipe2,sys_pipe2_wrapper) /* 325 */
 SYSCALL(sys_dup3,sys_dup3,sys_dup3_wrapper)
 SYSCALL(sys_epoll_create1,sys_epoll_create1,sys_epoll_create1_wrapper)
+SYSCALL(sys_preadv,sys_preadv,compat_sys_preadv_wrapper)
+SYSCALL(sys_pwritev,sys_pwritev,compat_sys_pwritev_wrapper)