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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 11457a2..61767f1 100644
--- a/drivers/md/md.c
+++ b/drivers/md/md.c
@@ -1652,6 +1652,8 @@ static void md_update_sb(mddev_t * mddev, int force_change)
int sync_req;
int nospares = 0;
+ if (mddev->external)
+ return;
repeat:
spin_lock_irq(&mddev->write_lock);
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