NFS: Add nfs4_sequence calls for OPEN_CONFIRM

Ensure OPEN_CONFIRM is not emitted while the transport is plugged.

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

1 files changed, 12 insertions, 0 deletions

diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
index 5ad48f0ce841..0122919a311a 100644
--- a/fs/nfs/nfs4proc.c
+++ b/fs/nfs/nfs4proc.c
@@ -1610,10 +1610,20 @@ int nfs4_open_delegation_recall(struct nfs_open_context *ctx, struct nfs4_state
         return nfs4_handle_delegation_recall_error(server, state, stateid, err);
 }
 
+static void nfs4_open_confirm_prepare(struct rpc_task *task, void *calldata)
+{
+        struct nfs4_opendata *data = calldata;
+
+        nfs40_setup_sequence(data->o_arg.server, &data->o_arg.seq_args,
+                                &data->o_res.seq_res, task);
+}
+
 static void nfs4_open_confirm_done(struct rpc_task *task, void *calldata)
 {
         struct nfs4_opendata *data = calldata;
 
+        nfs40_sequence_done(task, &data->o_res.seq_res);
+
         data->rpc_status = task->tk_status;
         if (data->rpc_status == 0) {
                 nfs4_stateid_copy(&data->o_res.stateid, &data->c_res.stateid);
@@ -1642,6 +1652,7 @@ out_free:
 }
 
 static const struct rpc_call_ops nfs4_open_confirm_ops = {
+        .rpc_call_prepare = nfs4_open_confirm_prepare,
         .rpc_call_done = nfs4_open_confirm_done,
         .rpc_release = nfs4_open_confirm_release,
 };
@@ -1669,6 +1680,7 @@ static int _nfs4_proc_open_confirm(struct nfs4_opendata *data)
         };
         int status;
 
+        nfs4_init_sequence(&data->o_arg.seq_args, &data->o_res.seq_res, 1);
         kref_get(&data->kref);
         data->rpc_done = 0;
         data->rpc_status = 0;