ns: Wire up the setns system call

32bit and 64bit on x86 are tested and working.  The rest I have looked
at closely and I can't find any problems.

setns is an easy system call to wire up.  It just takes two ints so I
don't expect any weird architecture porting problems.

While doing this I have noticed that we have some architectures that are
very slow to get new system calls.  cris seems to be the slowest where
the last system calls wired up were preadv and pwritev.  avr32 is weird
in that recvmmsg was wired up but never declared in unistd.h.  frv is
behind with perf_event_open being the last syscall wired up.  On h8300
the last system call wired up was epoll_wait.  On m32r the last system
call wired up was fallocate.  mn10300 has recvmmsg as the last system
call wired up.  The rest seem to at least have syncfs wired up which was
new in the 2.6.39.

v2: Most of the architecture support added by Daniel Lezcano <dlezcano@fr.ibm.com>
v3: ported to v2.6.36-rc4 by: Eric W. Biederman <ebiederm@xmission.com>
v4: Moved wiring up of the system call to another patch
v5: ported to v2.6.39-rc6
v6: rebased onto parisc-next and net-next to avoid syscall  conflicts.
v7: ported to Linus's latest post 2.6.39 tree.

>  arch/blackfin/include/asm/unistd.h     |    3 ++-
>  arch/blackfin/mach-common/entry.S      |    1 +
Acked-by: Mike Frysinger <vapier@gentoo.org>

Oh - ia64 wiring looks good.
Acked-by: Tony Luck <tony.luck@intel.com>

Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

49 files changed, 84 insertions, 28 deletions

diff --git a/arch/alpha/include/asm/unistd.h b/arch/alpha/include/asm/unistd.h
index b1834166922d..4ac48a095f3a 100644
--- a/arch/alpha/include/asm/unistd.h
+++ b/arch/alpha/include/asm/unistd.h
@@ -456,10 +456,11 @@
 #define __NR_open_by_handle_at          498
 #define __NR_clock_adjtime              499
 #define __NR_syncfs                     500
+#define __NR_setns                      501
 
 #ifdef __KERNEL__
 
-#define NR_SYSCALLS                     501
+#define NR_SYSCALLS                     502
 
 #define __ARCH_WANT_IPC_PARSE_VERSION
 #define __ARCH_WANT_OLD_READDIR
diff --git a/arch/alpha/kernel/systbls.S b/arch/alpha/kernel/systbls.S
index 15f999d41c75..b9c28f3f1956 100644
--- a/arch/alpha/kernel/systbls.S
+++ b/arch/alpha/kernel/systbls.S
@@ -519,6 +519,7 @@ sys_call_table:
         .quad sys_open_by_handle_at
         .quad sys_clock_adjtime
         .quad sys_syncfs                        /* 500 */
+        .quad sys_setns
 
         .size sys_call_table, . - sys_call_table
         .type sys_call_table, @object
diff --git a/arch/arm/include/asm/unistd.h b/arch/arm/include/asm/unistd.h
index 87dbe3e21970..0c5fc55ad800 100644
--- a/arch/arm/include/asm/unistd.h
+++ b/arch/arm/include/asm/unistd.h
@@ -400,6 +400,7 @@
 #define __NR_open_by_handle_at          (__NR_SYSCALL_BASE+371)
 #define __NR_clock_adjtime              (__NR_SYSCALL_BASE+372)
 #define __NR_syncfs                     (__NR_SYSCALL_BASE+373)
+#define __NR_setns                      (__NR_SYSCALL_BASE+374)
 
 /*
  * The following SWIs are ARM private.
diff --git a/arch/arm/kernel/calls.S b/arch/arm/kernel/calls.S
index 7fbf28c35bb2..a05f75928bea 100644
--- a/arch/arm/kernel/calls.S
+++ b/arch/arm/kernel/calls.S
@@ -383,6 +383,7 @@
                 CALL(sys_open_by_handle_at)
                 CALL(sys_clock_adjtime)
                 CALL(sys_syncfs)
+                CALL(sys_setns)
 #ifndef syscalls_counted
 .equ syscalls_padding, ((NR_syscalls + 3) & ~3) - NR_syscalls
 #define syscalls_counted
diff --git a/arch/avr32/include/asm/unistd.h b/arch/avr32/include/asm/unistd.h
index 89861a27543e..f714544e5560 100644
--- a/arch/avr32/include/asm/unistd.h
+++ b/arch/avr32/include/asm/unistd.h
@@ -299,9 +299,10 @@
 #define __NR_signalfd           279
 /* 280 was __NR_timerfd */
 #define __NR_eventfd            281
+#define __NR_setns              283
 
 #ifdef __KERNEL__
-#define NR_syscalls             282
+#define NR_syscalls             284
 
 /* Old stuff */
 #define __IGNORE_uselib
diff --git a/arch/avr32/kernel/syscall_table.S b/arch/avr32/kernel/syscall_table.S
index e76bad16b0f0..c7fd394d28a4 100644
--- a/arch/avr32/kernel/syscall_table.S
+++ b/arch/avr32/kernel/syscall_table.S
@@ -296,4 +296,5 @@ sys_call_table:
         .long   sys_ni_syscall          /* 280, was sys_timerfd */
         .long   sys_eventfd
         .long   sys_recvmmsg
+        .long   sys_setns
         .long   sys_ni_syscall          /* r8 is saturated at nr_syscalls */
diff --git a/arch/blackfin/include/asm/unistd.h b/arch/blackfin/include/asm/unistd.h
index ff9a9f35d50b..6ff9c411b145 100644
--- a/arch/blackfin/include/asm/unistd.h
+++ b/arch/blackfin/include/asm/unistd.h
@@ -397,8 +397,9 @@
 #define __NR_open_by_handle_at  376
 #define __NR_clock_adjtime      377
 #define __NR_syncfs             378
+#define __NR_setns              379
 
-#define __NR_syscall            379
+#define __NR_syscall            380
 #define NR_syscalls             __NR_syscall
 
 /* Old optional stuff no one actually uses */
diff --git a/arch/blackfin/mach-common/entry.S b/arch/blackfin/mach-common/entry.S
index f96933f48a7f..dda11ef06be5 100644
--- a/arch/blackfin/mach-common/entry.S
+++ b/arch/blackfin/mach-common/entry.S
@@ -1753,6 +1753,7 @@ ENTRY(_sys_call_table)
         .long _sys_open_by_handle_at
         .long _sys_clock_adjtime
         .long _sys_syncfs
+        .long _sys_setns
 
         .rept NR_syscalls-(.-_sys_call_table)/4
         .long _sys_ni_syscall
diff --git a/arch/cris/arch-v10/kernel/entry.S b/arch/cris/arch-v10/kernel/entry.S
index 0d6420d087fd..1161883eb582 100644
--- a/arch/cris/arch-v10/kernel/entry.S
+++ b/arch/cris/arch-v10/kernel/entry.S
@@ -937,6 +937,7 @@ sys_call_table:
         .long sys_inotify_init1
         .long sys_preadv
         .long sys_pwritev
+        .long sys_setns                 /* 335 */
 
         /*
          * NOTE!! This doesn't have to be exact - we just have
diff --git a/arch/cris/arch-v32/kernel/entry.S b/arch/cris/arch-v32/kernel/entry.S
index 3abf12c23e5f..84fed7e91ada 100644
--- a/arch/cris/arch-v32/kernel/entry.S
+++ b/arch/cris/arch-v32/kernel/entry.S
@@ -880,6 +880,7 @@ sys_call_table:
         .long sys_inotify_init1
         .long sys_preadv
         .long sys_pwritev
+        .long sys_setns                 /* 335 */
 
         /*
          * NOTE!! This doesn't have to be exact - we just have
diff --git a/arch/cris/include/asm/unistd.h b/arch/cris/include/asm/unistd.h
index f6fad83b3a8c..f921b8b0f97e 100644
--- a/arch/cris/include/asm/unistd.h
+++ b/arch/cris/include/asm/unistd.h
@@ -339,10 +339,11 @@
 #define __NR_inotify_init1      332
 #define __NR_preadv             333
 #define __NR_pwritev            334
+#define __NR_setns              335
 
 #ifdef __KERNEL__
 
-#define NR_syscalls 335
+#define NR_syscalls 336
 
 #include <arch/unistd.h>
 
diff --git a/arch/frv/include/asm/unistd.h b/arch/frv/include/asm/unistd.h
index b28da499e22a..a569dff7cd59 100644
--- a/arch/frv/include/asm/unistd.h
+++ b/arch/frv/include/asm/unistd.h
@@ -343,10 +343,11 @@
 #define __NR_pwritev            334
 #define __NR_rt_tgsigqueueinfo  335
 #define __NR_perf_event_open    336
+#define __NR_setns              337
 
 #ifdef __KERNEL__
 
-#define NR_syscalls 337
+#define NR_syscalls 338
 
 #define __ARCH_WANT_IPC_PARSE_VERSION
 /* #define __ARCH_WANT_OLD_READDIR */
diff --git a/arch/frv/kernel/entry.S b/arch/frv/kernel/entry.S
index 63d579bf1c29..017d6d7b784f 100644
--- a/arch/frv/kernel/entry.S
+++ b/arch/frv/kernel/entry.S
@@ -1526,5 +1526,6 @@ sys_call_table:
         .long sys_pwritev
         .long sys_rt_tgsigqueueinfo     /* 335 */
         .long sys_perf_event_open
+        .long sys_setns
 
 syscall_table_size = (. - sys_call_table)
diff --git a/arch/h8300/include/asm/unistd.h b/arch/h8300/include/asm/unistd.h
index 50f2c5a36591..2c3f8e60b1e0 100644
--- a/arch/h8300/include/asm/unistd.h
+++ b/arch/h8300/include/asm/unistd.h
@@ -325,10 +325,11 @@
 #define __NR_move_pages         317
 #define __NR_getcpu             318
 #define __NR_epoll_pwait        319
+#define __NR_setns              320
 
 #ifdef __KERNEL__
 
-#define NR_syscalls 320
+#define NR_syscalls 321
 
 #define __ARCH_WANT_IPC_PARSE_VERSION
 #define __ARCH_WANT_OLD_READDIR
diff --git a/arch/h8300/kernel/syscalls.S b/arch/h8300/kernel/syscalls.S
index faefaff7d43d..f4b2e67bcc34 100644
--- a/arch/h8300/kernel/syscalls.S
+++ b/arch/h8300/kernel/syscalls.S
@@ -333,6 +333,7 @@ SYMBOL_NAME_LABEL(sys_call_table)
         .long SYMBOL_NAME(sys_ni_syscall)       /* sys_move_pages */
         .long SYMBOL_NAME(sys_getcpu)
         .long SYMBOL_NAME(sys_ni_syscall)       /* sys_epoll_pwait */
+        .long SYMBOL_NAME(sys_setns)            /* 320 */
 
         .macro  call_sp addr
         mov.l   #SYMBOL_NAME(\addr),er6
diff --git a/arch/ia64/include/asm/unistd.h b/arch/ia64/include/asm/unistd.h
index 404d037c5e10..1cf0f496f744 100644
--- a/arch/ia64/include/asm/unistd.h
+++ b/arch/ia64/include/asm/unistd.h
@@ -319,11 +319,12 @@
 #define __NR_open_by_handle_at          1327
 #define __NR_clock_adjtime              1328
 #define __NR_syncfs                     1329
+#define __NR_setns                      1330
 
 #ifdef __KERNEL__
 
 
-#define NR_syscalls                     306 /* length of syscall table */
+#define NR_syscalls                     307 /* length of syscall table */
 
 /*
  * The following defines stop scripts/checksyscalls.sh from complaining about
diff --git a/arch/ia64/kernel/entry.S b/arch/ia64/kernel/entry.S
index 6de2e23b3636..9ca80193cd4e 100644
--- a/arch/ia64/kernel/entry.S
+++ b/arch/ia64/kernel/entry.S
@@ -1775,6 +1775,7 @@ sys_call_table:
         data8 sys_open_by_handle_at
         data8 sys_clock_adjtime
         data8 sys_syncfs
+        data8 sys_setns                         // 1330
 
         .org sys_call_table + 8*NR_syscalls     // guard against failures to increase NR_syscalls
 #endif /* __IA64_ASM_PARAVIRTUALIZED_NATIVE */
diff --git a/arch/m32r/include/asm/unistd.h b/arch/m32r/include/asm/unistd.h
index c70545689da8..3e1db561aacc 100644
--- a/arch/m32r/include/asm/unistd.h
+++ b/arch/m32r/include/asm/unistd.h
@@ -330,10 +330,11 @@
 /* #define __NR_timerfd         322 removed */
 #define __NR_eventfd            323
 #define __NR_fallocate          324
+#define __NR_setns              325
 
 #ifdef __KERNEL__
 
-#define NR_syscalls 325
+#define NR_syscalls 326
 
 #define __ARCH_WANT_IPC_PARSE_VERSION
 #define __ARCH_WANT_STAT64
diff --git a/arch/m32r/kernel/syscall_table.S b/arch/m32r/kernel/syscall_table.S
index 60536e271233..528f2e6ad064 100644
--- a/arch/m32r/kernel/syscall_table.S
+++ b/arch/m32r/kernel/syscall_table.S
@@ -324,3 +324,4 @@ ENTRY(sys_call_table)
         .long sys_ni_syscall
         .long sys_eventfd
         .long sys_fallocate
+        .long sys_setns                 /* 325 */
diff --git a/arch/m68k/include/asm/unistd.h b/arch/m68k/include/asm/unistd.h
index f3b649de2a1b..43f984e93970 100644
--- a/arch/m68k/include/asm/unistd.h
+++ b/arch/m68k/include/asm/unistd.h
@@ -349,10 +349,11 @@
 #define __NR_open_by_handle_at  341
 #define __NR_clock_adjtime      342
 #define __NR_syncfs             343
+#define __NR_setns              344
 
 #ifdef __KERNEL__
 
-#define NR_syscalls             344
+#define NR_syscalls             345
 
 #define __ARCH_WANT_IPC_PARSE_VERSION
 #define __ARCH_WANT_OLD_READDIR
diff --git a/arch/m68k/kernel/syscalltable.S b/arch/m68k/kernel/syscalltable.S
index 6f7b09122a00..00d1452f9571 100644
--- a/arch/m68k/kernel/syscalltable.S
+++ b/arch/m68k/kernel/syscalltable.S
@@ -364,4 +364,5 @@ ENTRY(sys_call_table)
         .long sys_open_by_handle_at
         .long sys_clock_adjtime
         .long sys_syncfs
+        .long sys_setns
 
diff --git a/arch/microblaze/include/asm/unistd.h b/arch/microblaze/include/asm/unistd.h
index 30edd61a6b8f..7d7092b917ac 100644
--- a/arch/microblaze/include/asm/unistd.h
+++ b/arch/microblaze/include/asm/unistd.h
@@ -390,8 +390,9 @@
 #define __NR_open_by_handle_at  372
 #define __NR_clock_adjtime      373
 #define __NR_syncfs             374
+#define __NR_setns              375
 
-#define __NR_syscalls           375
+#define __NR_syscalls           376
 
 #ifdef __KERNEL__
 #ifndef __ASSEMBLY__
diff --git a/arch/microblaze/kernel/syscall_table.S b/arch/microblaze/kernel/syscall_table.S
index 85cea81d1ca1..d915a122c865 100644
--- a/arch/microblaze/kernel/syscall_table.S
+++ b/arch/microblaze/kernel/syscall_table.S
@@ -379,3 +379,4 @@ ENTRY(sys_call_table)
         .long sys_open_by_handle_at
         .long sys_clock_adjtime
         .long sys_syncfs
+        .long sys_setns                 /* 375 */
diff --git a/arch/mips/include/asm/unistd.h b/arch/mips/include/asm/unistd.h
index fa2e37ea2be1..6fcfc480e9d0 100644
--- a/arch/mips/include/asm/unistd.h
+++ b/arch/mips/include/asm/unistd.h
@@ -363,16 +363,17 @@
 #define __NR_open_by_handle_at          (__NR_Linux + 340)
 #define __NR_clock_adjtime              (__NR_Linux + 341)
 #define __NR_syncfs                     (__NR_Linux + 342)
+#define __NR_setns                      (__NR_Linux + 343)
 
 /*
  * Offset of the last Linux o32 flavoured syscall
  */
-#define __NR_Linux_syscalls             342
+#define __NR_Linux_syscalls             343
 
 #endif /* _MIPS_SIM == _MIPS_SIM_ABI32 */
 
 #define __NR_O32_Linux                  4000
-#define __NR_O32_Linux_syscalls         342
+#define __NR_O32_Linux_syscalls         343
 
 #if _MIPS_SIM == _MIPS_SIM_ABI64
 
@@ -682,16 +683,17 @@
 #define __NR_open_by_handle_at          (__NR_Linux + 299)
 #define __NR_clock_adjtime              (__NR_Linux + 300)
 #define __NR_syncfs                     (__NR_Linux + 301)
+#define __NR_setns                      (__NR_Linux + 302)
 
 /*
  * Offset of the last Linux 64-bit flavoured syscall
  */
-#define __NR_Linux_syscalls             301
+#define __NR_Linux_syscalls             302
 
 #endif /* _MIPS_SIM == _MIPS_SIM_ABI64 */
 
 #define __NR_64_Linux                   5000
-#define __NR_64_Linux_syscalls          301
+#define __NR_64_Linux_syscalls          302
 
 #if _MIPS_SIM == _MIPS_SIM_NABI32
 
@@ -1006,16 +1008,17 @@
 #define __NR_open_by_handle_at          (__NR_Linux + 304)
 #define __NR_clock_adjtime              (__NR_Linux + 305)
 #define __NR_syncfs                     (__NR_Linux + 306)
+#define __NR_setns                      (__NR_Linux + 307)
 
 /*
  * Offset of the last N32 flavoured syscall
  */
-#define __NR_Linux_syscalls             306
+#define __NR_Linux_syscalls             307
 
 #endif /* _MIPS_SIM == _MIPS_SIM_NABI32 */
 
 #define __NR_N32_Linux                  6000
-#define __NR_N32_Linux_syscalls         306
+#define __NR_N32_Linux_syscalls         307
 
 #ifdef __KERNEL__
 
diff --git a/arch/mips/kernel/scall32-o32.S b/arch/mips/kernel/scall32-o32.S
index 7a8e1dd7f6f2..99e656e425f3 100644
--- a/arch/mips/kernel/scall32-o32.S
+++ b/arch/mips/kernel/scall32-o32.S
@@ -589,6 +589,7 @@ einval:	li	v0, -ENOSYS
         sys     sys_open_by_handle_at   3       /* 4340 */
         sys     sys_clock_adjtime       2
         sys     sys_syncfs              1
+        sys     sys_setns               2
         .endm
 
         /* We pre-compute the number of _instruction_ bytes needed to
diff --git a/arch/mips/kernel/scall64-64.S b/arch/mips/kernel/scall64-64.S
index 2d31c83224f9..fb0575f47f3d 100644
--- a/arch/mips/kernel/scall64-64.S
+++ b/arch/mips/kernel/scall64-64.S
@@ -428,4 +428,5 @@ sys_call_table:
         PTR     sys_open_by_handle_at
         PTR     sys_clock_adjtime               /* 5300 */
         PTR     sys_syncfs
+        PTR     sys_setns
         .size   sys_call_table,.-sys_call_table
diff --git a/arch/mips/kernel/scall64-n32.S b/arch/mips/kernel/scall64-n32.S
index 38a0503b9a4a..4de0c5534e73 100644
--- a/arch/mips/kernel/scall64-n32.S
+++ b/arch/mips/kernel/scall64-n32.S
@@ -428,4 +428,5 @@ EXPORT(sysn32_call_table)
         PTR     sys_open_by_handle_at
         PTR     compat_sys_clock_adjtime        /* 6305 */
         PTR     sys_syncfs
+        PTR     sys_setns
         .size   sysn32_call_table,.-sysn32_call_table
diff --git a/arch/mips/kernel/scall64-o32.S b/arch/mips/kernel/scall64-o32.S
index 91ea5e4041dd..4a387de08bfa 100644
--- a/arch/mips/kernel/scall64-o32.S
+++ b/arch/mips/kernel/scall64-o32.S
@@ -546,4 +546,5 @@ sys_call_table:
         PTR     compat_sys_open_by_handle_at    /* 4340 */
         PTR     compat_sys_clock_adjtime
         PTR     sys_syncfs
+        PTR     sys_setns
         .size   sys_call_table,.-sys_call_table
diff --git a/arch/mn10300/include/asm/unistd.h b/arch/mn10300/include/asm/unistd.h
index 9d056f515929..9051f921cbc7 100644
--- a/arch/mn10300/include/asm/unistd.h
+++ b/arch/mn10300/include/asm/unistd.h
@@ -349,10 +349,11 @@
 #define __NR_rt_tgsigqueueinfo  336
 #define __NR_perf_event_open    337
 #define __NR_recvmmsg           338
+#define __NR_setns              339
 
 #ifdef __KERNEL__
 
-#define NR_syscalls 339
+#define NR_syscalls 340
 
 /*
  * specify the deprecated syscalls we want to support on this arch
diff --git a/arch/mn10300/kernel/entry.S b/arch/mn10300/kernel/entry.S
index fb93ad720b82..ae435e1d5669 100644
--- a/arch/mn10300/kernel/entry.S
+++ b/arch/mn10300/kernel/entry.S
@@ -759,6 +759,7 @@ ENTRY(sys_call_table)
         .long sys_rt_tgsigqueueinfo
         .long sys_perf_event_open
         .long sys_recvmmsg
+        .long sys_setns
 
 
 nr_syscalls=(.-sys_call_table)/4
diff --git a/arch/parisc/include/asm/unistd.h b/arch/parisc/include/asm/unistd.h
index 9cbc2c3bf630..3392de3e7be0 100644
--- a/arch/parisc/include/asm/unistd.h
+++ b/arch/parisc/include/asm/unistd.h
@@ -820,8 +820,9 @@
 #define __NR_name_to_handle_at  (__NR_Linux + 325)
 #define __NR_open_by_handle_at  (__NR_Linux + 326)
 #define __NR_syncfs             (__NR_Linux + 327)
+#define __NR_setns              (__NR_Linux + 328)
 
-#define __NR_Linux_syscalls     (__NR_syncfs + 1)
+#define __NR_Linux_syscalls     (__NR_setns + 1)
 
 
 #define __IGNORE_select         /* newselect */
diff --git a/arch/parisc/kernel/syscall_table.S b/arch/parisc/kernel/syscall_table.S
index a5b02ce4d41e..34a4f5a2fffb 100644
--- a/arch/parisc/kernel/syscall_table.S
+++ b/arch/parisc/kernel/syscall_table.S
@@ -426,6 +426,7 @@
         ENTRY_SAME(name_to_handle_at)   /* 325 */
         ENTRY_COMP(open_by_handle_at)
         ENTRY_SAME(syncfs)
+        ENTRY_SAME(setns)
 
         /* Nothing yet */
 
diff --git a/arch/powerpc/include/asm/systbl.h b/arch/powerpc/include/asm/systbl.h
index 8489d372077f..f6736b7da463 100644
--- a/arch/powerpc/include/asm/systbl.h
+++ b/arch/powerpc/include/asm/systbl.h
@@ -353,3 +353,4 @@ COMPAT_SYS_SPU(open_by_handle_at)
 COMPAT_SYS_SPU(clock_adjtime)
 SYSCALL_SPU(syncfs)
 COMPAT_SYS_SPU(sendmmsg)
+SYSCALL_SPU(setns)
diff --git a/arch/powerpc/include/asm/unistd.h b/arch/powerpc/include/asm/unistd.h
index 6d23c8193caa..b8b3f599362b 100644
--- a/arch/powerpc/include/asm/unistd.h
+++ b/arch/powerpc/include/asm/unistd.h
@@ -372,10 +372,11 @@
 #define __NR_clock_adjtime      347
 #define __NR_syncfs             348
 #define __NR_sendmmsg           349
+#define __NR_setns              350
 
 #ifdef __KERNEL__
 
-#define __NR_syscalls           350
+#define __NR_syscalls           351
 
 #define __NR__exit __NR_exit
 #define NR_syscalls     __NR_syscalls
diff --git a/arch/s390/include/asm/unistd.h b/arch/s390/include/asm/unistd.h
index 9208e69245a0..404bdb9671b4 100644
--- a/arch/s390/include/asm/unistd.h
+++ b/arch/s390/include/asm/unistd.h
@@ -276,7 +276,8 @@
 #define __NR_open_by_handle_at  336
 #define __NR_clock_adjtime      337
 #define __NR_syncfs             338
-#define NR_syscalls 339
+#define __NR_setns              339
+#define NR_syscalls 340
 
 /* 
  * There are some system calls that are not present on 64 bit, some
diff --git a/arch/s390/kernel/compat_wrapper.S b/arch/s390/kernel/compat_wrapper.S
index 1dc96ea08fa8..1f5eb789c3a7 100644
--- a/arch/s390/kernel/compat_wrapper.S
+++ b/arch/s390/kernel/compat_wrapper.S
@@ -1904,3 +1904,9 @@ compat_sys_clock_adjtime_wrapper:
 sys_syncfs_wrapper:
         lgfr    %r2,%r2                 # int
         jg      sys_syncfs
+
+        .globl  sys_setns_wrapper
+sys_setns_wrapper:
+        lgfr    %r2,%r2                 # int
+        lgfr    %r3,%r3                 # int
+        jg      sys_setns
diff --git a/arch/s390/kernel/syscalls.S b/arch/s390/kernel/syscalls.S
index 9c65fd4ddce0..6ee39ef8fe4a 100644
--- a/arch/s390/kernel/syscalls.S
+++ b/arch/s390/kernel/syscalls.S
@@ -347,3 +347,4 @@ SYSCALL(sys_name_to_handle_at,sys_name_to_handle_at,sys_name_to_handle_at_wrappe
 SYSCALL(sys_open_by_handle_at,sys_open_by_handle_at,compat_sys_open_by_handle_at_wrapper)
 SYSCALL(sys_clock_adjtime,sys_clock_adjtime,compat_sys_clock_adjtime_wrapper)
 SYSCALL(sys_syncfs,sys_syncfs,sys_syncfs_wrapper)
+SYSCALL(sys_setns,sys_setns,sys_setns_wrapper)
diff --git a/arch/sh/include/asm/unistd_32.h b/arch/sh/include/asm/unistd_32.h
index bb7d2702c2c9..3432008d2888 100644
--- a/arch/sh/include/asm/unistd_32.h
+++ b/arch/sh/include/asm/unistd_32.h
@@ -374,8 +374,9 @@
 #define __NR_clock_adjtime      361
 #define __NR_syncfs             362
 #define __NR_sendmmsg           363
+#define __NR_setns              364
 
-#define NR_syscalls 364
+#define NR_syscalls 365
 
 #ifdef __KERNEL__
 
diff --git a/arch/sh/include/asm/unistd_64.h b/arch/sh/include/asm/unistd_64.h
index 46327cea1e5c..ec9898665f23 100644
--- a/arch/sh/include/asm/unistd_64.h
+++ b/arch/sh/include/asm/unistd_64.h
@@ -395,10 +395,11 @@
 #define __NR_clock_adjtime      372
 #define __NR_syncfs             373
 #define __NR_sendmmsg           374
+#define __NR_setns              375
 
 #ifdef __KERNEL__
 
-#define NR_syscalls 375
+#define NR_syscalls 376
 
 #define __ARCH_WANT_IPC_PARSE_VERSION
 #define __ARCH_WANT_OLD_READDIR
diff --git a/arch/sh/kernel/syscalls_32.S b/arch/sh/kernel/syscalls_32.S
index 7c486f3e3a3c..39b051de4c7c 100644
--- a/arch/sh/kernel/syscalls_32.S
+++ b/arch/sh/kernel/syscalls_32.S
@@ -381,3 +381,4 @@ ENTRY(sys_call_table)
         .long sys_clock_adjtime
         .long sys_syncfs
         .long sys_sendmmsg
+        .long sys_setns
diff --git a/arch/sh/kernel/syscalls_64.S b/arch/sh/kernel/syscalls_64.S
index ba1a737afe80..089c4d825d08 100644
--- a/arch/sh/kernel/syscalls_64.S
+++ b/arch/sh/kernel/syscalls_64.S
@@ -401,3 +401,4 @@ sys_call_table:
         .long sys_clock_adjtime
         .long sys_syncfs
         .long sys_sendmmsg
+        .long sys_setns                 /* 375 */
diff --git a/arch/sparc/include/asm/unistd.h b/arch/sparc/include/asm/unistd.h
index c5387ed0add8..6260d5deeabc 100644
--- a/arch/sparc/include/asm/unistd.h
+++ b/arch/sparc/include/asm/unistd.h
@@ -405,8 +405,9 @@
 #define __NR_clock_adjtime      334
 #define __NR_syncfs             335
 #define __NR_sendmmsg           336
+#define __NR_setns              337
 
-#define NR_syscalls             337
+#define NR_syscalls             338
 
 #ifdef __32bit_syscall_numbers__
 /* Sparc 32-bit only has the "setresuid32", "getresuid32" variants,
diff --git a/arch/sparc/kernel/systbls_32.S b/arch/sparc/kernel/systbls_32.S
index 332c83ff7701..6e492d59f6b1 100644
--- a/arch/sparc/kernel/systbls_32.S
+++ b/arch/sparc/kernel/systbls_32.S
@@ -84,4 +84,4 @@ sys_call_table:
 /*320*/ .long sys_dup3, sys_pipe2, sys_inotify_init1, sys_accept4, sys_preadv
 /*325*/ .long sys_pwritev, sys_rt_tgsigqueueinfo, sys_perf_event_open, sys_recvmmsg, sys_fanotify_init
 /*330*/ .long sys_fanotify_mark, sys_prlimit64, sys_name_to_handle_at, sys_open_by_handle_at, sys_clock_adjtime
-/*335*/ .long sys_syncfs, sys_sendmmsg
+/*335*/ .long sys_syncfs, sys_sendmmsg, sys_setns
diff --git a/arch/sparc/kernel/systbls_64.S b/arch/sparc/kernel/systbls_64.S
index 43887ca0be0e..f566518483b5 100644
--- a/arch/sparc/kernel/systbls_64.S
+++ b/arch/sparc/kernel/systbls_64.S
@@ -85,7 +85,7 @@ sys_call_table32:
 /*320*/ .word sys_dup3, sys_pipe2, sys_inotify_init1, sys_accept4, compat_sys_preadv
         .word compat_sys_pwritev, compat_sys_rt_tgsigqueueinfo, sys_perf_event_open, compat_sys_recvmmsg, sys_fanotify_init
 /*330*/ .word sys32_fanotify_mark, sys_prlimit64, sys_name_to_handle_at, compat_sys_open_by_handle_at, compat_sys_clock_adjtime
-        .word sys_syncfs, compat_sys_sendmmsg
+        .word sys_syncfs, compat_sys_sendmmsg, sys_setns
 
 #endif /* CONFIG_COMPAT */
 
@@ -162,4 +162,4 @@ sys_call_table:
 /*320*/ .word sys_dup3, sys_pipe2, sys_inotify_init1, sys_accept4, sys_preadv
         .word sys_pwritev, sys_rt_tgsigqueueinfo, sys_perf_event_open, sys_recvmmsg, sys_fanotify_init
 /*330*/ .word sys_fanotify_mark, sys_prlimit64, sys_name_to_handle_at, sys_open_by_handle_at, sys_clock_adjtime
-        .word sys_syncfs, sys_sendmmsg
+        .word sys_syncfs, sys_sendmmsg, sys_setns
diff --git a/arch/x86/ia32/ia32entry.S b/arch/x86/ia32/ia32entry.S
index 95f5826be458..c1870dddd322 100644
--- a/arch/x86/ia32/ia32entry.S
+++ b/arch/x86/ia32/ia32entry.S
@@ -849,4 +849,5 @@ ia32_sys_call_table:
         .quad compat_sys_clock_adjtime
         .quad sys_syncfs
         .quad compat_sys_sendmmsg       /* 345 */
+        .quad sys_setns
 ia32_syscall_end:
diff --git a/arch/x86/include/asm/unistd_32.h b/arch/x86/include/asm/unistd_32.h
index fb6a625c99bf..593485b38ab3 100644
--- a/arch/x86/include/asm/unistd_32.h
+++ b/arch/x86/include/asm/unistd_32.h
@@ -351,10 +351,11 @@
 #define __NR_clock_adjtime      343
 #define __NR_syncfs             344
 #define __NR_sendmmsg           345
+#define __NR_setns              346
 
 #ifdef __KERNEL__
 
-#define NR_syscalls 346
+#define NR_syscalls 347
 
 #define __ARCH_WANT_IPC_PARSE_VERSION
 #define __ARCH_WANT_OLD_READDIR
diff --git a/arch/x86/include/asm/unistd_64.h b/arch/x86/include/asm/unistd_64.h
index 79f90eb15aad..705bf139288c 100644
--- a/arch/x86/include/asm/unistd_64.h
+++ b/arch/x86/include/asm/unistd_64.h
@@ -679,6 +679,8 @@ __SYSCALL(__NR_clock_adjtime, sys_clock_adjtime)
 __SYSCALL(__NR_syncfs, sys_syncfs)
 #define __NR_sendmmsg                           307
 __SYSCALL(__NR_sendmmsg, sys_sendmmsg)
+#define __NR_setns                              308
+__SYSCALL(__NR_setns, sys_setns)
 
 #ifndef __NO_STUBS
 #define __ARCH_WANT_OLD_READDIR
diff --git a/arch/x86/kernel/syscall_table_32.S b/arch/x86/kernel/syscall_table_32.S
index 32cbffb0c494..fbb0a045a1a2 100644
--- a/arch/x86/kernel/syscall_table_32.S
+++ b/arch/x86/kernel/syscall_table_32.S
@@ -345,3 +345,4 @@ ENTRY(sys_call_table)
         .long sys_clock_adjtime
         .long sys_syncfs
         .long sys_sendmmsg              /* 345 */
+        .long sys_setns
diff --git a/arch/xtensa/include/asm/unistd.h b/arch/xtensa/include/asm/unistd.h
index 528042c2951e..a6f934f37f1a 100644
--- a/arch/xtensa/include/asm/unistd.h
+++ b/arch/xtensa/include/asm/unistd.h
@@ -683,8 +683,10 @@ __SYSCALL(305, sys_ni_syscall, 0)
 __SYSCALL(306, sys_eventfd, 1)
 #define __NR_recvmmsg                           307
 __SYSCALL(307, sys_recvmmsg, 5)
+#define __NR_setns                              308
+__SYSCALL(308, sys_setns, 2)
 
-#define __NR_syscall_count                      308
+#define __NR_syscall_count                      309
 
 /*
  * sysxtensa syscall handler