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-rw-r--r--include/linux/ipc_namespace.h1
-rw-r--r--ipc/namespace.c48
2 files changed, 24 insertions, 25 deletions
diff --git a/include/linux/ipc_namespace.h b/include/linux/ipc_namespace.h
index 3bf40e246a8..804e4e4a2b6 100644
--- a/include/linux/ipc_namespace.h
+++ b/include/linux/ipc_namespace.h
@@ -94,7 +94,6 @@ static inline int mq_init_ns(struct ipc_namespace *ns) { return 0; }
#endif
#if defined(CONFIG_IPC_NS)
-extern void free_ipc_ns(struct ipc_namespace *ns);
extern struct ipc_namespace *copy_ipcs(unsigned long flags,
struct ipc_namespace *ns);
extern void free_ipcs(struct ipc_namespace *ns, struct ipc_ids *ids,
diff --git a/ipc/namespace.c b/ipc/namespace.c
index 231ee5359ab..a1094ff0bef 100644
--- a/ipc/namespace.c
+++ b/ipc/namespace.c
@@ -83,6 +83,30 @@ void free_ipcs(struct ipc_namespace *ns, struct ipc_ids *ids,
up_write(&ids->rw_mutex);
}
+static void free_ipc_ns(struct ipc_namespace *ns)
+{
+ /*
+ * Unregistering the hotplug notifier at the beginning guarantees
+ * that the ipc namespace won't be freed while we are inside the
+ * callback routine. Since the blocking_notifier_chain_XXX routines
+ * hold a rw lock on the notifier list, unregister_ipcns_notifier()
+ * won't take the rw lock before blocking_notifier_call_chain() has
+ * released the rd lock.
+ */
+ unregister_ipcns_notifier(ns);
+ sem_exit_ns(ns);
+ msg_exit_ns(ns);
+ shm_exit_ns(ns);
+ kfree(ns);
+ atomic_dec(&nr_ipc_ns);
+
+ /*
+ * Do the ipcns removal notification after decrementing nr_ipc_ns in
+ * order to have a correct value when recomputing msgmni.
+ */
+ ipcns_notify(IPCNS_REMOVED);
+}
+
/*
* put_ipc_ns - drop a reference to an ipc namespace.
* @ns: the namespace to put
@@ -108,27 +132,3 @@ void put_ipc_ns(struct ipc_namespace *ns)
free_ipc_ns(ns);
}
}
-
-void free_ipc_ns(struct ipc_namespace *ns)
-{
- /*
- * Unregistering the hotplug notifier at the beginning guarantees
- * that the ipc namespace won't be freed while we are inside the
- * callback routine. Since the blocking_notifier_chain_XXX routines
- * hold a rw lock on the notifier list, unregister_ipcns_notifier()
- * won't take the rw lock before blocking_notifier_call_chain() has
- * released the rd lock.
- */
- unregister_ipcns_notifier(ns);
- sem_exit_ns(ns);
- msg_exit_ns(ns);
- shm_exit_ns(ns);
- kfree(ns);
- atomic_dec(&nr_ipc_ns);
-
- /*
- * Do the ipcns removal notification after decrementing nr_ipc_ns in
- * order to have a correct value when recomputing msgmni.
- */
- ipcns_notify(IPCNS_REMOVED);
-}