linux-kernel - Re: [PATCH 2/2] vhost: vringh: Remove unused functions

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Message-ID: <aFC0obkaXV8ercyI@gallifrey>
Date: Tue, 17 Jun 2025 00:19:45 +0000
From: "Dr. David Alan Gilbert" <linux@...blig.org>
To: Simon Horman <horms@...nel.org>
Cc: mst@...hat.com, jasowang@...hat.com, eperezma@...hat.com,
	xuanzhuo@...ux.alibaba.com, kvm@...r.kernel.org,
	virtualization@...ts.linux.dev, netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/2] vhost: vringh: Remove unused functions

* Simon Horman (horms@...nel.org) wrote:
> On Sat, Jun 14, 2025 at 12:07:31AM +0100, linux@...blig.org wrote:
> > From: "Dr. David Alan Gilbert" <linux@...blig.org>
> > 
> > The functions:
> >   vringh_abandon_kern()
> >   vringh_abandon_user()
> >   vringh_iov_pull_kern() and
> >   vringh_iov_push_kern()
> > were all added in 2013 by
> > commit f87d0fbb5798 ("vringh: host-side implementation of virtio rings.")
> > but have remained unused.
> > 
> > Remove them.
> > 
> > Signed-off-by: Dr. David Alan Gilbert <linux@...blig.org>
> 
> Hi David,
> 
> With this patch (set) applied vlang flags the following.
> So I guess that xfer_kern can be removed too.
> 
>   .../vringh.c:887:19: warning: unused function 'xfer_kern' [-Wunused-function]
>     887 | static inline int xfer_kern(const struct vringh *vrh, void *src,
>         |                   ^~~~~~~~~
>   .../vringh.c:894:19: warning: unused function 'kern_xfer' [-Wunused-function]
>     894 | static inline int kern_xfer(const struct vringh *vrh, void *dst,
>         |                   ^~~~~~~~~
> 
> Otherwise this looks good to me.

V2 sent, see thread starting 20250617001838.114457-1-linux@...blig.org
I checked, gcc doesn't warn me on these!

Dave

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