Merge branch 'for-linus' of git://git.monstr.eu/linux-2.6-microblaze

[linux-2.6.git] / ipc / namespace.c

diff --git a/ipc/namespace.c b/ipc/namespace.c
index a56fc598a8071e7ca5c784e35d22c40f00d5e1f7..a1094ff0befa2775c5e9023c44c1520ff813ad04 100644 (file)
--- a/ipc/namespace.c
+++ b/ipc/namespace.c
@@ -14,7 +14,7 @@
 
 #include "util.h"
 
-static struct ipc_namespace *clone_ipc_ns(struct ipc_namespace *old_ns)
+static struct ipc_namespace *create_ipc_ns(void)
 {
        struct ipc_namespace *ns;
        int err;
@@ -48,14 +48,9 @@ static struct ipc_namespace *clone_ipc_ns(struct ipc_namespace *old_ns)
 
 struct ipc_namespace *copy_ipcs(unsigned long flags, struct ipc_namespace *ns)
 {
-       struct ipc_namespace *new_ns;
-
        if (!(flags & CLONE_NEWIPC))
                return get_ipc_ns(ns);
-
-       new_ns = clone_ipc_ns(ns);
-
-       return new_ns;
+       return create_ipc_ns();
 }
 
 /*
@@ -88,6 +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
@@ -113,27 +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);
-}