linux-kernel - Re: [PATCH net] tcp: Export tcp_write_queue

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Message-Id: <20200730.143226.1527353835656521105.davem@davemloft.net>
Date:   Thu, 30 Jul 2020 14:32:26 -0700 (PDT)
From:   David Miller <davem@...emloft.net>
To:     f.fainelli@...il.com
Cc:     edumazet@...gle.com, netdev@...r.kernel.org, kuznet@....inr.ac.ru,
        yoshfuji@...ux-ipv6.org, kuba@...nel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH net] tcp: Export tcp_write_queue_purge()

From: Florian Fainelli <f.fainelli@...il.com>
Date: Thu, 30 Jul 2020 14:23:50 -0700

> On 7/30/20 2:16 PM, Eric Dumazet wrote:
>> On Thu, Jul 30, 2020 at 2:07 PM Florian Fainelli <f.fainelli@...il.com> wrote:
>> Hmmm.... which module would need this exactly ?
> 
> None in tree unfortunately, and I doubt it would be published one day.
> For consistency one could argue that given it used to be accessible, and
> other symbols within net/ipv4/tcp.c are also exported, so this should
> one be. Not going to hold that line of argumentation more than in this
> email, if you object to it, that would be completely fine with me.
> 
>> 
>> How come it took 3 years to discover this issue ?
> 
> We just upgraded our downstream kernel from 4.9 to 5.4 and this is why
> it took so long.

We really can't do this, sorry.