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>

5 files changed, 6 insertions, 25 deletions

diff --git a/ipc/msg.c b/ipc/msg.c
index a388824740e7..cbd27e519943 100644
--- a/ipc/msg.c
+++ b/ipc/msg.c
@@ -87,7 +87,7 @@ static int newque (struct ipc_namespace *ns, key_t key, int msgflg);
 static int sysvipc_msg_proc_show(struct seq_file *s, void *it);
 #endif
 
-static void __ipc_init __msg_init_ns(struct ipc_namespace *ns, struct ipc_ids *ids)
+static void __msg_init_ns(struct ipc_namespace *ns, struct ipc_ids *ids)
 {
         ns->ids[IPC_MSG_IDS] = ids;
         ns->msg_ctlmax = MSGMAX;
@@ -96,7 +96,6 @@ static void __ipc_init __msg_init_ns(struct ipc_namespace *ns, struct ipc_ids *i
         ipc_init_ids(ids, ns->msg_ctlmni);
 }
 
-#ifdef CONFIG_IPC_NS
 int msg_init_ns(struct ipc_namespace *ns)
 {
         struct ipc_ids *ids;
@@ -128,7 +127,6 @@ void msg_exit_ns(struct ipc_namespace *ns)
         kfree(ns->ids[IPC_MSG_IDS]);
         ns->ids[IPC_MSG_IDS] = NULL;
 }
-#endif
 
 void __init msg_init(void)
 {
diff --git a/ipc/sem.c b/ipc/sem.c
index 9964b2224c70..89bfdffb38d8 100644
--- a/ipc/sem.c
+++ b/ipc/sem.c
@@ -121,7 +121,7 @@ static int sysvipc_sem_proc_show(struct seq_file *s, void *it);
 #define sc_semopm       sem_ctls[2]
 #define sc_semmni       sem_ctls[3]
 
-static void __ipc_init __sem_init_ns(struct ipc_namespace *ns, struct ipc_ids *ids)
+static void __sem_init_ns(struct ipc_namespace *ns, struct ipc_ids *ids)
 {
         ns->ids[IPC_SEM_IDS] = ids;
         ns->sc_semmsl = SEMMSL;
@@ -132,7 +132,6 @@ static void __ipc_init __sem_init_ns(struct ipc_namespace *ns, struct ipc_ids *i
         ipc_init_ids(ids, ns->sc_semmni);
 }
 
-#ifdef CONFIG_IPC_NS
 int sem_init_ns(struct ipc_namespace *ns)
 {
         struct ipc_ids *ids;
@@ -164,7 +163,6 @@ void sem_exit_ns(struct ipc_namespace *ns)
         kfree(ns->ids[IPC_SEM_IDS]);
         ns->ids[IPC_SEM_IDS] = NULL;
 }
-#endif
 
 void __init sem_init (void)
 {
diff --git a/ipc/shm.c b/ipc/shm.c
index 0852f206d895..242c3f66493a 100644
--- a/ipc/shm.c
+++ b/ipc/shm.c
@@ -77,7 +77,7 @@ static void shm_destroy (struct ipc_namespace *ns, struct shmid_kernel *shp);
 static int sysvipc_shm_proc_show(struct seq_file *s, void *it);
 #endif
 
-static void __ipc_init __shm_init_ns(struct ipc_namespace *ns, struct ipc_ids *ids)
+static void __shm_init_ns(struct ipc_namespace *ns, struct ipc_ids *ids)
 {
         ns->ids[IPC_SHM_IDS] = ids;
         ns->shm_ctlmax = SHMMAX;
@@ -98,7 +98,6 @@ static void do_shm_rmid(struct ipc_namespace *ns, struct shmid_kernel *shp)
                 shm_destroy(ns, shp);
 }
 
-#ifdef CONFIG_IPC_NS
 int shm_init_ns(struct ipc_namespace *ns)
 {
         struct ipc_ids *ids;
@@ -130,7 +129,6 @@ void shm_exit_ns(struct ipc_namespace *ns)
         kfree(ns->ids[IPC_SHM_IDS]);
         ns->ids[IPC_SHM_IDS] = NULL;
 }
-#endif
 
 void __init shm_init (void)
 {
diff --git a/ipc/util.c b/ipc/util.c
index 7536a7292d48..44e5135aee47 100644
--- a/ipc/util.c
+++ b/ipc/util.c
@@ -50,7 +50,6 @@ struct ipc_namespace init_ipc_ns = {
         },
 };
 
-#ifdef CONFIG_IPC_NS
 static struct ipc_namespace *clone_ipc_ns(struct ipc_namespace *old_ns)
 {
         int err;
@@ -110,14 +109,6 @@ void free_ipc_ns(struct kref *kref)
         shm_exit_ns(ns);
         kfree(ns);
 }
-#else
-struct ipc_namespace *copy_ipcs(unsigned long flags, struct ipc_namespace *ns)
-{
-        if (flags & CLONE_NEWIPC)
-                return ERR_PTR(-EINVAL);
-        return ns;
-}
-#endif
 
 /**
  *      ipc_init        -       initialise IPC subsystem
@@ -145,7 +136,7 @@ __initcall(ipc_init);
  *      array itself. 
  */
  
-void __ipc_init ipc_init_ids(struct ipc_ids* ids, int size)
+void ipc_init_ids(struct ipc_ids* ids, int size)
 {
         int i;
 
diff --git a/ipc/util.h b/ipc/util.h
index e3aa2c5c97dc..333e891bcaca 100644
--- a/ipc/util.h
+++ b/ipc/util.h
@@ -41,12 +41,8 @@ struct ipc_ids {
 };
 
 struct seq_file;
-#ifdef CONFIG_IPC_NS
-#define __ipc_init
-#else
-#define __ipc_init      __init
-#endif
-void __ipc_init ipc_init_ids(struct ipc_ids *ids, int size);
+
+void ipc_init_ids(struct ipc_ids *ids, int size);
 #ifdef CONFIG_PROC_FS
 void __init ipc_init_proc_interface(const char *path, const char *header,
                 int ids, int (*show)(struct seq_file *, void *));