SUNRPC: rpcauth_create needs to know about rpc_clnt clone status

Ensure that we set rpc_clnt->cl_parent before calling rpc_client_register
so that rpcauth_create can find any existing RPCSEC_GSS caches for this
transport.

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

diff --git a/net/sunrpc/clnt.c b/net/sunrpc/clnt.c
index af3f0cf7e278b8714116ad21c334e53dc0b1cc99..8572d3270783c97a4db1e3b2e33c49745374404d 100644 (file)
--- a/net/sunrpc/clnt.c
+++ b/net/sunrpc/clnt.c
@@ -313,7 +313,9 @@ out:
        return err;
 }
 
-static struct rpc_clnt * rpc_new_client(const struct rpc_create_args *args, struct rpc_xprt *xprt)
+static struct rpc_clnt * rpc_new_client(const struct rpc_create_args *args,
+               struct rpc_xprt *xprt,
+               struct rpc_clnt *parent)
 {
        const struct rpc_program *program = args->program;
        const struct rpc_version *version;
@@ -339,7 +341,7 @@ static struct rpc_clnt * rpc_new_client(const struct rpc_create_args *args, stru
        clnt = kzalloc(sizeof(*clnt), GFP_KERNEL);
        if (!clnt)
                goto out_err;
-       clnt->cl_parent = clnt;
+       clnt->cl_parent = parent ? : clnt;
 
        rcu_assign_pointer(clnt->cl_xprt, xprt);
        clnt->cl_procinfo = version->procs;
@@ -377,6 +379,8 @@ static struct rpc_clnt * rpc_new_client(const struct rpc_create_args *args, stru
        err = rpc_client_register(args, clnt);
        if (err)
                goto out_no_path;
+       if (parent)
+               atomic_inc(&parent->cl_count);
        return clnt;
 
 out_no_path:
@@ -467,7 +471,7 @@ struct rpc_clnt *rpc_create(struct rpc_create_args *args)
        if (args->flags & RPC_CLNT_CREATE_NONPRIVPORT)
                xprt->resvport = 0;
 
-       clnt = rpc_new_client(args, xprt);
+       clnt = rpc_new_client(args, xprt, NULL);
        if (IS_ERR(clnt))
                return clnt;
 
@@ -514,15 +518,12 @@ static struct rpc_clnt *__rpc_clone_client(struct rpc_create_args *args,
                goto out_err;
        args->servername = xprt->servername;
 
-       new = rpc_new_client(args, xprt);
+       new = rpc_new_client(args, xprt, clnt);
        if (IS_ERR(new)) {
                err = PTR_ERR(new);
                goto out_err;
        }
 
-       atomic_inc(&clnt->cl_count);
-       new->cl_parent = clnt;
-
        /* Turn off autobind on clones */
        new->cl_autobind = 0;
        new->cl_softrtry = clnt->cl_softrtry;