namespaces: add the NAMESPACES config option

The option is selectable if EMBEDDED is chosen only.  When the EMBEDDED is off
namespaces will be on.

Signed-off-by: Pavel Emelyanov <xemul@openvz.org>
Acked-by: Serge Hallyn <serue@us.ibm.com>
Cc: Cedric Le Goater <clg@fr.ibm.com>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Cc: Herbert Poetzl <herbert@13thfloor.at>
Cc: Kirill Korotaev <dev@sw.ru>
Cc: Sukadev Bhattiprolu <sukadev@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 9 insertions, 0 deletions

diff --git a/init/Kconfig b/init/Kconfig
index 95ac2657b0f4..7654207961a2 100644
--- a/init/Kconfig
+++ b/init/Kconfig
@@ -420,6 +420,15 @@ config RELAY
 
           If unsure, say N.
 
+config NAMESPACES
+        bool "Namespaces support" if EMBEDDED
+        default !EMBEDDED
+        help
+          Provides the way to make tasks work with different objects using
+          the same id. For example same IPC id may refer to different objects
+          or same user id or pid may refer to different tasks when used in
+          different namespaces.
+
 config BLK_DEV_INITRD
         bool "Initial RAM filesystem and RAM disk (initramfs/initrd) support"
         depends on BROKEN || !FRV