linux-kernel - Re: [PATCH] net: move ‘__zerocopy_sg_from_iter’ prototype to header file <linux/skbuff.h>

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Date:   Mon, 5 Nov 2018 21:20:30 +0100
From:   Mathieu Malaterre <malat@...ian.org>
To:     "David S. Miller" <davem@...emloft.net>
Cc:     LKML <linux-kernel@...r.kernel.org>, netdev@...r.kernel.org
Subject: Re: [PATCH] net: move ‘__zerocopy_sg_from_iter’ prototype to header file <linux/skbuff.h>

On Sat, Nov 3, 2018 at 7:34 AM David Miller <davem@...emloft.net> wrote:
>
> From: Mathieu Malaterre <malat@...ian.org>
> Date: Wed, 31 Oct 2018 12:34:59 +0100
>
> > This makes it clear the function is part of the API. Also this will
> > remove a warning triggered at W=1:
> >
> >   net/core/datagram.c:581:5: warning: no previous prototype for ‘__zerocopy_sg_from_iter’ [-Wmissing-prototypes]
> >
> > Signed-off-by: Mathieu Malaterre <malat@...ian.org>
>
> It's not part of the "API", and it shouldn't even be exported to
> modules.
>
> Only net/core/skbuff.c calls it, and that is never modular.

OK. I got confused with the EXPORT_SYMBOL(). I'll re-send moving
__zerocopy_sg_from_iter to skbuff.c.

Thanks