[PATCH] ipc: delete "nr_ipc_ns"

[Alexey Dobriyan]

Write-only variable.

Signed-off-by: Alexey Dobriyan <adobri...@gmail.com>
---

 include/linux/ipc_namespace.h |    2 --
 ipc/msgutil.c                 |    2 --
 ipc/namespace.c               |    2 --
 3 files changed, 6 deletions(-)

--- a/include/linux/ipc_namespace.h
+++ b/include/linux/ipc_namespace.h
@@ -63,8 +63,6 @@ struct ipc_namespace {
 };
 
 extern struct ipc_namespace init_ipc_ns;
-extern atomic_t nr_ipc_ns;
-
 extern spinlock_t mq_lock;
 
 #ifdef CONFIG_SYSVIPC
--- a/ipc/msgutil.c
+++ b/ipc/msgutil.c
@@ -37,8 +37,6 @@ struct ipc_namespace init_ipc_ns = {
 #endif
 };
 
-atomic_t nr_ipc_ns = ATOMIC_INIT(1);
-
 struct msg_msgseg {
        struct msg_msgseg *next;
        /* the next part of the message follows immediately */
--- a/ipc/namespace.c
+++ b/ipc/namespace.c
@@ -40,7 +40,6 @@ static struct ipc_namespace *create_ipc_ns(struct 
user_namespace *user_ns,
                kfree(ns);
                return ERR_PTR(err);
        }
-       atomic_inc(&nr_ipc_ns);
 
        sem_init_ns(ns);
        msg_init_ns(ns);
@@ -95,7 +94,6 @@ static void free_ipc_ns(struct ipc_namespace *ns)
        sem_exit_ns(ns);
        msg_exit_ns(ns);
        shm_exit_ns(ns);
-       atomic_dec(&nr_ipc_ns);
 
        put_user_ns(ns->user_ns);
        ns_free_inum(&ns->ns);