1 files changed, 5 insertions, 0 deletions

diff --git a/drivers/md/md.c b/drivers/md/md.c
index 8cc4bbcf9bf8..06f6e81f1516 100644
--- a/drivers/md/md.c
+++ b/drivers/md/md.c
@@ -8694,6 +8694,11 @@ static void check_sb_changes(struct mddev *mddev, struct md_rdev *rdev)
                                 ret = remove_and_add_spares(mddev, rdev2);
                                 pr_info("Activated spare: %s\n",
                                                 bdevname(rdev2->bdev,b));
+                                /* wakeup mddev->thread here, so array could
+                                 * perform resync with the new activated disk */
+                                set_bit(MD_RECOVERY_NEEDED, &mddev->recovery);
+                                md_wakeup_thread(mddev->thread);
+
                         }
                         /* device faulty
                          * We just want to do the minimum to mark the disk