md-cluster: discard unused sb_mutex.

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

diff --git a/drivers/md/md-cluster.c b/drivers/md/md-cluster.c
index f42162c49e3bdc0a6bde8c4d36456294e6b77e3d..02a0fb2e8441a5624948657237d314adcd447355 100644 (file)
--- a/drivers/md/md-cluster.c
+++ b/drivers/md/md-cluster.c
@@ -54,7 +54,6 @@ struct md_cluster_info {
        dlm_lockspace_t *lockspace;
        int slot_number;
        struct completion completion;
-       struct mutex sb_mutex;
        struct dlm_lock_resource *bitmap_lockres;
        struct dlm_lock_resource *resync_lockres;
        struct list_head suspend_list;
@@ -709,7 +708,6 @@ static int join(struct mddev *mddev, int nodes)
        init_completion(&cinfo->completion);
        set_bit(MD_CLUSTER_BEGIN_JOIN_CLUSTER, &cinfo->state);
 
-       mutex_init(&cinfo->sb_mutex);
        mddev->cluster_info = cinfo;
 
        memset(str, 0, 64);