module: add MODULE_STATE_LIVE notify

Add a module notifier call which notifies that the state of a module
changes from MODULE_STATE_COMING to MODULE_STATE_LIVE.

Signed-off-by: Masami Hiramatsu <mhiramat@redhat.com>
Cc: Ananth N Mavinakayanahalli <ananth@in.ibm.com>
Cc: Anil S Keshavamurthy <anil.s.keshavamurthy@intel.com>
Acked-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/kernel/module.c b/kernel/module.c
index cc79c94..496dcb5 100644 (file)
--- a/kernel/module.c
+++ b/kernel/module.c
@@ -2352,6 +2352,8 @@ sys_init_module(void __user *umod,
        /* Now it's a first class citizen!  Wake up anyone waiting for it. */
        mod->state = MODULE_STATE_LIVE;
        wake_up(&module_wq);
+       blocking_notifier_call_chain(&module_notify_list,
+                                    MODULE_STATE_LIVE, mod);
 
        mutex_lock(&module_mutex);
        /* Drop initial reference. */