md: Notify sysfs when RAID1/5/10 disk is In_sync.

When RAID1 is done syncing disks, it'll update the state
of synced rdevs to In_sync. But it neglected to notify
sysfs that the attribute changed. So any programs that
are waiting for an rdev's state to change will not be
woken.

(raid5/raid10 added by neilb)

Signed-off-by: Adrian Drzewiecki <adriand@vmware.com>
Signed-off-by: NeilBrown <neilb@suse.de>

3 files changed, 3 insertions, 0 deletions

diff --git a/drivers/md/raid1.c b/drivers/md/raid1.c
index 73cc74ffc26b..0e1abf1bb38e 100644
--- a/drivers/md/raid1.c
+++ b/drivers/md/raid1.c
@@ -1135,6 +1135,7 @@ static int raid1_spare_active(mddev_t *mddev)
                         spin_lock_irqsave(&conf->device_lock, flags);
                         mddev->degraded--;
                         spin_unlock_irqrestore(&conf->device_lock, flags);
+                        sysfs_notify_dirent(rdev->sysfs_state);
                 }
         }
 
diff --git a/drivers/md/raid10.c b/drivers/md/raid10.c
index a88aeb5198c7..76d1fc9c65ba 100644
--- a/drivers/md/raid10.c
+++ b/drivers/md/raid10.c
@@ -1130,6 +1130,7 @@ static int raid10_spare_active(mddev_t *mddev)
                         spin_lock_irqsave(&conf->device_lock, flags);
                         mddev->degraded--;
                         spin_unlock_irqrestore(&conf->device_lock, flags);
+                        sysfs_notify_dirent(tmp->rdev->sysfs_state);
                 }
         }
 
diff --git a/drivers/md/raid5.c b/drivers/md/raid5.c
index 866d4b5a144c..7865dd090bde 100644
--- a/drivers/md/raid5.c
+++ b/drivers/md/raid5.c
@@ -5341,6 +5341,7 @@ static int raid5_spare_active(mddev_t *mddev)
                         spin_lock_irqsave(&conf->device_lock, flags);
                         mddev->degraded--;
                         spin_unlock_irqrestore(&conf->device_lock, flags);
+                        sysfs_notify_dirent(tmp->rdev->sysfs_state);
                 }
         }
         print_raid5_conf(conf);