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

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Message-ID: <20200205154829.wbgdp2r4gslnozpa@l29ah-x201.l29ah-x201>
Date:   Wed, 5 Feb 2020 18:48:29 +0300
From:   l29ah@...k.li
To:     Dominique Martinet <asmadeus@...ewreck.org>
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

On Wed, Feb 05, 2020 at 08:35:04AM +0100, Dominique Martinet wrote:
> Sergey Alirzaev wrote on Wed, Feb 05, 2020:
> > A user doesn't necessarily want to wait for all the requested data to
> > be available, since the waiting time is unbounded.
> 
> 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.

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