[PATCH] md: send online/offline uevents when an md array starts/stops

This allows udev to do something intelligent when an array becomes
available.

Acked-by: Greg KH <greg@kroah.com>
Signed-off-by: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 2 insertions, 0 deletions

diff --git a/drivers/md/md.c b/drivers/md/md.c
index 50ab4a936e30..d11135604403 100644
--- a/drivers/md/md.c
+++ b/drivers/md/md.c
@@ -3200,6 +3200,7 @@ static int do_md_run(mddev_t * mddev)
 
         mddev->changed = 1;
         md_new_event(mddev);
+        kobject_uevent(&mddev->gendisk->kobj, KOBJ_ONLINE);
         return 0;
 }
 
@@ -3313,6 +3314,7 @@ static int do_md_stop(mddev_t * mddev, int mode)
 
                         module_put(mddev->pers->owner);
                         mddev->pers = NULL;
+                        kobject_uevent(&mddev->gendisk->kobj, KOBJ_OFFLINE);
                         if (mddev->ro)
                                 mddev->ro = 0;
                 }