NFSv.2/pnfs Add a LAYOUTSTATS rpc function

[firefly-linux-kernel-4.4.55.git] / fs / nfs / nfs42proc.c

diff --git a/fs/nfs/nfs42proc.c b/fs/nfs/nfs42proc.c
index 3a9e75235f30e60e5a4ae974864c63fb003b969d..ac929685350b9285cb4600667c9c9aa976cc53b4 100644 (file)
--- a/fs/nfs/nfs42proc.c
+++ b/fs/nfs/nfs42proc.c
@@ -165,3 +165,30 @@ loff_t nfs42_proc_llseek(struct file *filep, loff_t offset, int whence)
 
        return vfs_setpos(filep, res.sr_offset, inode->i_sb->s_maxbytes);
 }
+
+static const struct rpc_call_ops nfs42_layoutstat_ops = {
+};
+
+int nfs42_proc_layoutstats_generic(struct nfs_server *server,
+                                  struct nfs42_layoutstat_data *data)
+{
+       struct rpc_message msg = {
+               .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_LAYOUTSTATS],
+               .rpc_argp = &data->args,
+               .rpc_resp = &data->res,
+       };
+       struct rpc_task_setup task_setup = {
+               .rpc_client = server->client,
+               .rpc_message = &msg,
+               .callback_ops = &nfs42_layoutstat_ops,
+               .callback_data = data,
+               .flags = RPC_TASK_ASYNC,
+       };
+       struct rpc_task *task;
+
+       nfs4_init_sequence(&data->args.seq_args, &data->res.seq_res, 0);
+       task = rpc_run_task(&task_setup);
+       if (IS_ERR(task))
+               return PTR_ERR(task);
+       return 0;
+}