remove CONFIG_UTS_NS and CONFIG_IPC_NS

CONFIG_UTS_NS and CONFIG_IPC_NS have very little value as they only
deactivate the unshare of the uts and ipc namespaces and do not improve
performance.

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

1 files changed, 1 insertions, 4 deletions

diff --git a/kernel/utsname_sysctl.c b/kernel/utsname_sysctl.c
index f22b9dbd2a9c..c76c06466bfd 100644
--- a/kernel/utsname_sysctl.c
+++ b/kernel/utsname_sysctl.c
@@ -18,10 +18,7 @@
 static void *get_uts(ctl_table *table, int write)
 {
         char *which = table->data;
-#ifdef CONFIG_UTS_NS
-        struct uts_namespace *uts_ns = current->nsproxy->uts_ns;
-        which = (which - (char *)&init_uts_ns) + (char *)uts_ns;
-#endif
+
         if (!write)
                 down_read(&uts_sem);
         else