linux-kernel - Re: [PATCH 04/10] kill dev

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Message-ID: <20180122164730.GD27216@lst.de>
Date:   Mon, 22 Jan 2018 17:47:30 +0100
From:   Christoph Hellwig <hch@....de>
To:     Al Viro <viro@...IV.linux.org.uk>
Cc:     netdev@...r.kernel.org, "David S. Miller" <davem@...emloft.net>,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        linux-kernel@...r.kernel.org, Christoph Hellwig <hch@....de>
Subject: Re: [PATCH 04/10] kill dev_ifsioc()

On Thu, Jan 18, 2018 at 07:37:49PM +0000, Al Viro wrote:
> From: Al Viro <viro@...iv.linux.org.uk>
> 
> it's been equivalent to sock_do_ioctl() since 2009...
> 
> Signed-off-by: Al Viro <viro@...iv.linux.org.uk>

Note that we have two different dev_ifsioc() defintions, which
is a little weird.

But the net/socket.c one does indeed seem superflous as there is no
point in doing the compat_alloc_user_space / copy_in_user as far
as I can tell.  compat_ifreq differs from ifreq in the size of
ifru_data, but it seems none of these ioctls actually use it.

A better changelog would be nice, though.