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>

1 files changed, 2 insertions, 0 deletions

diff --git a/kernel/module.c b/kernel/module.c
index cc79c942c572..496dcb57b608 100644
--- 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. */