nfs41 delegreturn sequence setup done support

Separate delegreturn calls from nfs41: sequence setup/done support

Implement the delegreturn rpc_call_prepare method for
asynchronuos nfs rpcs, call nfs41_setup_sequence from
respective rpc_call_validate_args methods.

Call nfs4_sequence_done from respective rpc_call_done methods.

Note that we need to pass a pointer to the nfs_server in calls data
for passing on to nfs4_sequence_done.

Signed-off-by: Andy Adamson<andros@netapp.com>
Signed-off-by: Benny Halevy <bhalevy@panasas.com>
[pnfs: client data server write validate and release]
Signed-off-by: Andy Adamson<andros@umich.edu>
Signed-off-by: Benny Halevy <bhalevy@panasas.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
index fbd6274..dc0feb5 100644 (file)
--- a/fs/nfs/nfs4proc.c
+++ b/fs/nfs/nfs4proc.c
@@ -3360,6 +3360,10 @@ struct nfs4_delegreturndata {
 static void nfs4_delegreturn_done(struct rpc_task *task, void *calldata)
 {
        struct nfs4_delegreturndata *data = calldata;
+
+       nfs4_sequence_done_free_slot(data->res.server, &data->res.seq_res,
+                                    task->tk_status);
+
        data->rpc_status = task->tk_status;
        if (data->rpc_status == 0)
                renew_lease(data->res.server, data->timestamp);
@@ -3370,7 +3374,25 @@ static void nfs4_delegreturn_release(void *calldata)
        kfree(calldata);
 }
 
+#if defined(CONFIG_NFS_V4_1)
+static void nfs4_delegreturn_prepare(struct rpc_task *task, void *data)
+{
+       struct nfs4_delegreturndata *d_data;
+
+       d_data = (struct nfs4_delegreturndata *)data;
+
+       if (nfs4_setup_sequence(d_data->res.server->nfs_client,
+                               &d_data->args.seq_args,
+                               &d_data->res.seq_res, 1, task))
+               return;
+       rpc_call_start(task);
+}
+#endif /* CONFIG_NFS_V4_1 */
+
 static const struct rpc_call_ops nfs4_delegreturn_ops = {
+#if defined(CONFIG_NFS_V4_1)
+       .rpc_call_prepare = nfs4_delegreturn_prepare,
+#endif /* CONFIG_NFS_V4_1 */
        .rpc_call_done = nfs4_delegreturn_done,
        .rpc_release = nfs4_delegreturn_release,
 };
@@ -3392,7 +3414,7 @@ static int _nfs4_proc_delegreturn(struct inode *inode, struct rpc_cred *cred, co
        };
        int status = 0;
 
-       data = kmalloc(sizeof(*data), GFP_KERNEL);
+       data = kzalloc(sizeof(*data), GFP_KERNEL);
        if (data == NULL)
                return -ENOMEM;
        data->args.fhandle = &data->fh;