ia64: Add accept4() syscall

commit 65cc21b4 upstream.

While debugging udev > 170 failure on Debian Wheezy
(http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=648325), it appears
that the issue was in fact due to missing accept4() in ia64.

This patch simply adds accept4() to ia64.
Signed-off-by: Émeric Maschino <emeric.maschino@gmail.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

arch/ia64/include/asm/unistd.h

@@ -321,11 +321,12 @@
 #define __NR_syncfs			1329
 #define __NR_setns			1330
 #define __NR_sendmmsg			1331
+#define __NR_accept4			1334
 
 #ifdef __KERNEL__
 
 
-#define NR_syscalls			308 /* length of syscall table */
+#define NR_syscalls			311 /* length of syscall table */
 
 /*
  * The following defines stop scripts/checksyscalls.sh from complaining about

arch/ia64/kernel/entry.S

@@ -1777,6 +1777,9 @@ sys_call_table:
 	data8 sys_syncfs
 	data8 sys_setns				// 1330
 	data8 sys_sendmmsg
+	data8 sys_ni_syscall	/* process_vm_readv */
+	data8 sys_ni_syscall	/* process_vm_writev */
+	data8 sys_accept4
 
 	.org sys_call_table + 8*NR_syscalls	// guard against failures to increase NR_syscalls
 #endif /* __IA64_ASM_PARAVIRTUALIZED_NATIVE */