From: Trond Myklebust <trond.myklebust@primarydata.com>
Date: Fri, 28 Apr 2017 13:25:34 -0400
Subject: [PATCH] pNFS: Allow multiple connections to the DS
Patch-mainline: Submitted, linux-nfs@vger.kernel.org
References: fate#322786

If the user specifies -onconn=<number> mount option, and the transport
protocol is TCP, then set up <number> connections to the pNFS data server
as well. The connections will all go to the same IP address.

Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
Acked-by: NeilBrown <neilb@suse.com>

---
 fs/nfs/nfs3client.c |    3 +++
 fs/nfs/nfs4client.c |    3 +++
 2 files changed, 6 insertions(+)

--- a/fs/nfs/nfs3client.c
+++ b/fs/nfs/nfs3client.c
@@ -100,6 +100,9 @@ struct nfs_client *nfs3_set_ds_client(st
 		return ERR_PTR(-EINVAL);
 	cl_init.hostname = buf;
 
+	if (mds_clp->cl_nconnect > 1 && ds_proto == XPRT_TRANSPORT_TCP)
+		cl_init.nconnect = mds_clp->cl_nconnect;
+
 	if (mds_srv->flags & NFS_MOUNT_NORESVPORT)
 		set_bit(NFS_CS_NORESVPORT, &cl_init.init_flags);
 
--- a/fs/nfs/nfs4client.c
+++ b/fs/nfs/nfs4client.c
@@ -911,6 +911,9 @@ struct nfs_client *nfs4_set_ds_client(st
 		return ERR_PTR(-EINVAL);
 	cl_init.hostname = buf;
 
+	if (mds_clp->cl_nconnect > 1 && ds_proto == XPRT_TRANSPORT_TCP)
+		cl_init.nconnect = mds_clp->cl_nconnect;
+
 	if (mds_srv->flags & NFS_MOUNT_NORESVPORT)
 		__set_bit(NFS_CS_NORESVPORT, &cl_init.init_flags);