SUNRPC: Add refcounting to the struct rpc_xprt
In a subsequent patch, this will allow the portmapper to take a reference
to the rpc_xprt for which it is updating the port number, fixing an Oops.
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
diff --git a/net/sunrpc/clnt.c b/net/sunrpc/clnt.c
index ceadb72..084a0ad 100644
--- a/net/sunrpc/clnt.c
+++ b/net/sunrpc/clnt.c
@@ -177,7 +177,7 @@
kfree(clnt->cl_server);
kfree(clnt);
out_err:
- xprt_destroy(xprt);
+ xprt_put(xprt);
out_no_xprt:
return ERR_PTR(err);
}
@@ -261,6 +261,7 @@
atomic_set(&new->cl_users, 0);
new->cl_parent = clnt;
atomic_inc(&clnt->cl_count);
+ new->cl_xprt = xprt_get(clnt->cl_xprt);
/* Turn off autobind on clones */
new->cl_autobind = 0;
new->cl_oneshot = 0;
@@ -337,15 +338,12 @@
rpc_rmdir(clnt->cl_dentry);
rpc_put_mount();
}
- if (clnt->cl_xprt) {
- xprt_destroy(clnt->cl_xprt);
- clnt->cl_xprt = NULL;
- }
if (clnt->cl_server != clnt->cl_inline_name)
kfree(clnt->cl_server);
out_free:
rpc_free_iostats(clnt->cl_metrics);
clnt->cl_metrics = NULL;
+ xprt_put(clnt->cl_xprt);
kfree(clnt);
return 0;
}