netdev - Re: [PATCH net-next] netlink: Add nla_memdup() to wrap kmemdup() use on nlattr

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Date:   Wed, 26 Oct 2016 12:18:47 +0200
From:   Johannes Berg <johannes@...solutions.net>
To:     Thomas Graf <tgraf@...g.ch>
Cc:     davem@...emloft.net, daniel@...earbox.net, netdev@...r.kernel.org,
        linux-wireless@...r.kernel.org
Subject: Re: [PATCH net-next] netlink: Add nla_memdup() to wrap kmemdup()
 use on nlattr

On Wed, 2016-10-26 at 11:52 +0200, Thomas Graf wrote:
> On 10/26/16 at 10:59am, Johannes Berg wrote:
> > 
> > 
> > > 
> > >  /**
> > > + * nla_memdup - duplicate attribute memory (kmemdup)
> > > + * @src: netlink attribute to duplicate from
> > > + * @gfp: GFP mask
> > 
> > Actually, is there any point in passing a GFP mask? None of the
> > current
> > users need it, and it seems fairly unlikely to be needed since this
> > is
> > typically used on the netlink input path, where you surely
> > shouldn't
> > need GFP_ATOMIC or so?
> 
> I'm fine either way. I didn't want to make assumptions which need
> later changes. It's not hurting either and the function prototype
> is very small.

Yeah, I don't really care much - just wondered.

johannes