NFSD/SUNRPC: Check rpc_xprt out of xs_setup_bc_tcp

Besides checking rpc_xprt out of xs_setup_bc_tcp,
increase it's reference (it's important).

Signed-off-by: Kinglong Mee <kinglongmee@gmail.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>

1 files changed, 0 insertions, 9 deletions

diff --git a/net/sunrpc/xprtsock.c b/net/sunrpc/xprtsock.c
index 63ae657f255b..1335239217cd 100644
--- a/net/sunrpc/xprtsock.c
+++ b/net/sunrpc/xprtsock.c
@@ -2923,15 +2923,6 @@ static struct rpc_xprt *xs_setup_bc_tcp(struct xprt_create *args)
         struct svc_sock *bc_sock;
         struct rpc_xprt *ret;
 
-        if (args->bc_xprt->xpt_bc_xprt) {
-                /*
-                 * This server connection already has a backchannel
-                 * transport; we can't create a new one, as we wouldn't
-                 * be able to match replies based on xid any more.  So,
-                 * reuse the already-existing one:
-                 */
-                 return args->bc_xprt->xpt_bc_xprt;
-        }
         xprt = xs_setup_xprt(args, xprt_tcp_slot_table_entries,
                         xprt_tcp_slot_table_entries);
         if (IS_ERR(xprt))