diff options
Diffstat (limited to 'drivers/md/md-cluster.c')
| -rw-r--r-- | drivers/md/md-cluster.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/drivers/md/md-cluster.c b/drivers/md/md-cluster.c index 11f1e91d387d..896279988dfd 100644 --- a/drivers/md/md-cluster.c +++ b/drivers/md/md-cluster.c @@ -549,8 +549,13 @@ static void process_metadata_update(struct mddev *mddev, struct cluster_msg *msg dlm_lock_sync(cinfo->no_new_dev_lockres, DLM_LOCK_CR); - /* daemaon thread must exist */ thread = rcu_dereference_protected(mddev->thread, true); + if (!thread) { + pr_warn("md-cluster: Received metadata update but MD thread is not ready\n"); + dlm_unlock_sync(cinfo->no_new_dev_lockres); + return; + } + wait_event(thread->wqueue, (got_lock = mddev_trylock(mddev)) || test_bit(MD_CLUSTER_HOLDING_MUTEX_FOR_RECVD, &cinfo->state)); |