md: do not count blocked devices as spares

remove_and_add_spares() assumes that failed devices have been hot-removed
from the array.  Removal is skipped in the 'blocked' case so do not count a
device in this state as 'spare'.

Signed-off-by: Dan Williams <dan.j.williams@intel.com>

1 files changed, 2 insertions, 1 deletions

diff --git a/drivers/md/md.c b/drivers/md/md.c
index 0f1b8309642..c7aae66c6f9 100644
--- a/drivers/md/md.c
+++ b/drivers/md/md.c
@@ -5996,7 +5996,8 @@ static int remove_and_add_spares(mddev_t *mddev)
         if (mddev->degraded) {
                 rdev_for_each(rdev, rtmp, mddev) {
                         if (rdev->raid_disk >= 0 &&
-                            !test_bit(In_sync, &rdev->flags))
+                            !test_bit(In_sync, &rdev->flags) &&
+                            !test_bit(Blocked, &rdev->flags))
                                 spares++;
                         if (rdev->raid_disk < 0
                             && !test_bit(Faulty, &rdev->flags)) {