md: Using poll /proc/mdstat can monitor the events of adding a spare disks
Signed-off-by: majianpeng <majianpeng@gmail.com>
Signed-off-by: NeilBrown <neilb@suse.de>
diff --git a/drivers/md/md.c b/drivers/md/md.c
index 9160463..734bc09 100644
--- a/drivers/md/md.c
+++ b/drivers/md/md.c
@@ -5274,6 +5274,8 @@
if (mddev->degraded)
set_bit(MD_RECOVERY_RECOVER, &mddev->recovery);
set_bit(MD_RECOVERY_NEEDED, &mddev->recovery);
+ if (!err)
+ md_new_event(mddev);
md_wakeup_thread(mddev->thread);
return err;
}