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From:   NeilBrown <neilb@suse.com>
To:     Olga Kornievskaia <aglo@umich.edu>,
        Chuck Lever <chuck.lever@oracle.com>,
        Schumaker Anna <Anna.Schumaker@netapp.com>,
        Trond Myklebust <trondmy@hammerspace.com>
Date:   Thu, 30 May 2019 10:41:28 +1000
Subject: [PATCH 8/9] pNFS: Allow multiple connections to the DS
Cc:     linux-nfs@vger.kernel.org
Message-ID: <155917688885.3988.14415976491019492843.stgit@noble.brown>
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From: Trond Myklebust <trond.myklebust@primarydata.com>

If the user specifies -onconnect=<number> mount option, 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>
Signed-off-by: NeilBrown <neilb@suse.com>
---
 fs/nfs/nfs3client.c |    1 +
 fs/nfs/nfs4client.c |    3 +++
 2 files changed, 4 insertions(+)

diff --git a/fs/nfs/nfs3client.c b/fs/nfs/nfs3client.c
index fb0c425b5d45..c6987077ad15 100644
--- a/fs/nfs/nfs3client.c
+++ b/fs/nfs/nfs3client.c
@@ -93,6 +93,7 @@ struct nfs_client *nfs3_set_ds_client(struct nfs_server *mds_srv,
 		.net = mds_clp->cl_net,
 		.timeparms = &ds_timeout,
 		.cred = mds_srv->cred,
+		.nconnect = mds_clp->cl_nconnect,
 	};
 	struct nfs_client *clp;
 	char buf[INET6_ADDRSTRLEN + 1];
diff --git a/fs/nfs/nfs4client.c b/fs/nfs/nfs4client.c
index 401a76290e55..0b15ee54b13c 100644
--- a/fs/nfs/nfs4client.c
+++ b/fs/nfs/nfs4client.c
@@ -943,6 +943,9 @@ struct nfs_client *nfs4_set_ds_client(struct nfs_server *mds_srv,
 		return ERR_PTR(-EINVAL);
 	cl_init.hostname = buf;
 
+	if (mds_clp->cl_nconnect > 1)
+		cl_init.nconnect = mds_clp->cl_nconnect;
+
 	if (mds_srv->flags & NFS_MOUNT_NORESVPORT)
 		__set_bit(NFS_CS_NORESVPORT, &cl_init.init_flags);