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NFS4: Avoid migration loops
If a server returns itself as a location while migrating, the client may end up getting stuck attempting to migrate twice to the same server. Catch this by checking if the nfs_client found is the same as the existing client. For the other two callers to nfs4_set_client, the nfs_client will always be ERR_PTR(-EINVAL). Signed-off-by: Benjamin Coddington <bcodding@redhat.com> Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
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@ -817,6 +817,11 @@ static int nfs4_set_client(struct nfs_server *server,
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goto error;
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}
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if (server->nfs_client == clp) {
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error = -ELOOP;
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goto error;
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}
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/*
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* Query for the lease time on clientid setup or renewal
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*
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