linux-kernel - Re: [PATCH 1/2] 9pnet: allow making incomplete read requests

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Date:   Wed, 5 Feb 2020 17:07:29 +0100
From:   Dominique Martinet <asmadeus@...ewreck.org>
To:     l29ah@...k.li
Cc:     v9fs-developer@...ts.sourceforge.net,
        Eric Van Hensbergen <ericvh@...il.com>,
        Latchesar Ionkov <lucho@...kov.net>,
        "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/2] 9pnet: allow making incomplete read requests

l29ah@...k.li wrote on Wed, Feb 05, 2020:
> On Wed, Feb 05, 2020 at 08:35:04AM +0100, Dominique Martinet wrote:
> > I'm not sure I agree on the argument there: the waiting time is
> > unbounded for a single request as well. What's your use case?
> 
> I want to interface with synthetic file systems that represent
> arbitrary data streams.
> The one where i've hit the problem is reading the log of a XMPP chat
> client that blocks if there's no new data available.

Definitely a valid use case for 9p, please rephrase your commit message
to describe the problem a bit better.

I'll wait for a v2 removing the 'total' variable from
p9_client_read_once anyway, unless you disagree.


Thanks,
-- 
Dominique