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-rw-r--r--drivers/md/md.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/md/md.c b/drivers/md/md.c
index f27e8f644df..8c1f7954882 100644
--- a/drivers/md/md.c
+++ b/drivers/md/md.c
@@ -2303,6 +2303,8 @@ static int add_new_disk(mddev_t * mddev, mdu_disk_info_t *info)
else
rdev->in_sync = 0;
+ rdev->sb_size = MD_SB_BYTES;
+
if (info->state & (1<<MD_DISK_WRITEMOSTLY))
set_bit(WriteMostly, &rdev->flags);