md: Disable bad blocks and v0.90 metadata.

v0.90 metadata cannot record bad blocks, so when loading metadata
for such a device, set shift to -1.

Signed-off-by: NeilBrown <neilb@suse.de>

1 files changed, 4 insertions, 0 deletions

diff --git a/drivers/md/md.c b/drivers/md/md.c
index e2ec8bd0fb94..7ae3c5a18001 100644
--- a/drivers/md/md.c
+++ b/drivers/md/md.c
@@ -1058,6 +1058,7 @@ static int super_90_load(mdk_rdev_t *rdev, mdk_rdev_t *refdev, int minor_version
         rdev->preferred_minor = sb->md_minor;
         rdev->data_offset = 0;
         rdev->sb_size = MD_SB_BYTES;
+        rdev->badblocks.shift = -1;
 
         if (sb->level == LEVEL_MULTIPATH)
                 rdev->desc_nr = -1;
@@ -3004,6 +3005,9 @@ static mdk_rdev_t *md_import_device(dev_t newdev, int super_format, int super_mi
                         goto abort_free;
                 }
         }
+        if (super_format == -1)
+                /* hot-add for 0.90, or non-persistent: so no badblocks */
+                rdev->badblocks.shift = -1;
 
         return rdev;