SUNRPC: Make create_client() take a reference to the rpciod workqueue

Ensures that an rpc_client always has the possibility to send asynchronous
RPC calls.

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

1 files changed, 7 insertions, 0 deletions

diff --git a/net/sunrpc/clnt.c b/net/sunrpc/clnt.c
index 78bbb359281d..fe838e996ee3 100644
--- a/net/sunrpc/clnt.c
+++ b/net/sunrpc/clnt.c
@@ -111,6 +111,9 @@ static struct rpc_clnt * rpc_new_client(struct rpc_xprt *xprt, char *servname, s
         dprintk("RPC:       creating %s client for %s (xprt %p)\n",
                         program->name, servname, xprt);
 
+        err = rpciod_up();
+        if (err)
+                goto out_no_rpciod;
         err = -EINVAL;
         if (!xprt)
                 goto out_no_xprt;
@@ -191,6 +194,8 @@ out_no_stats:
 out_err:
         xprt_put(xprt);
 out_no_xprt:
+        rpciod_down();
+out_no_rpciod:
         return ERR_PTR(err);
 }
 
@@ -287,6 +292,7 @@ rpc_clone_client(struct rpc_clnt *clnt)
         xprt_get(clnt->cl_xprt);
         kref_get(&clnt->cl_kref);
         rpc_register_client(new);
+        rpciod_up();
         return new;
 out_no_path:
         rpc_free_iostats(new->cl_metrics);
@@ -344,6 +350,7 @@ out_free:
         rpc_free_iostats(clnt->cl_metrics);
         clnt->cl_metrics = NULL;
         xprt_put(clnt->cl_xprt);
+        rpciod_down();
         kfree(clnt);
 }