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From: "Steve Wise" <swise@opengridcomputing.com>
To: "'Chuck Lever'" <chuck.lever@oracle.com>, <linux-rdma@vger.kernel.org>,
        <linux-nfs@vger.kernel.org>
References: <20160411200323.20531.8893.stgit@manet.1015granger.net> <20160411201050.20531.53651.stgit@manet.1015granger.net>
In-Reply-To: <20160411201050.20531.53651.stgit@manet.1015granger.net>
Subject: RE: [PATCH v1 05/18] xprtrdma: Avoid using Write list for small NFS READ requests
Date: Mon, 11 Apr 2016 15:35:35 -0500
Message-ID: <033901d19431$b3725d20$1a571760$@opengridcomputing.com>
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> Avoid the latency and interrupt overhead of registering a Write
> chunk when handling NFS READ requests of a few hundred bytes or
> less.
> 
> This change does not interoperate with Linux NFS/RDMA servers
> that do not have commit 9d11b51ce7c1 ('svcrdma: Fix send_reply()
> scatter/gather set-up').
> 
> $ git describe 9d11b51ce7c1
> v4.2-rc3-10-g9d11b51
>

Hey Chuck,

Is there any way to avoid breaking interoperability with older servers?

Steve