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

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Message-Id: <20181102.233357.1129560140046922258.davem@davemloft.net>
Date:   Fri, 02 Nov 2018 23:33:57 -0700 (PDT)
From:   David Miller <davem@...emloft.net>
To:     malat@...ian.org
Cc:     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>

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.