linux-kernel - Re: [PATCH 1/4] inet: Add skb_copy_datagram

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Message-ID: <20141104145222.GF7996@ZenIV.linux.org.uk>
Date:	Tue, 4 Nov 2014 14:52:22 +0000
From:	Al Viro <viro@...IV.linux.org.uk>
To:	Herbert Xu <herbert@...dor.apana.org.au>
Cc:	"David S. Miller" <davem@...emloft.net>, netdev@...r.kernel.org,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Benjamin LaHaise <bcrl@...ck.org>
Subject: Re: [PATCH 1/4] inet: Add skb_copy_datagram_iter

On Tue, Nov 04, 2014 at 10:44:16PM +0800, Herbert Xu wrote:
> On Tue, Nov 04, 2014 at 02:35:36PM +0000, Al Viro wrote:
> > On Tue, Nov 04, 2014 at 02:32:00PM +0000, Al Viro wrote:
> >
> > > Too noisy, IMO.  How about skb_copy_datagram_msg() first?  The fewer
> > > places have to even think of iovec or iov_iter, the better...
> > 
> > PS: "too noisy" is about turning every callsite of skb_copy_datagram_iovec
> > into that of skb_copy_datagram_iter; the helper itself is just fine.
> 
> Hmm if that is your concern then I don't see how skb_copy_datagram_msg
> changes things as you'd still have to convert every existing caller
> of skb_copy_datagram_iovec.  Colour me confused.

Fewer places having to even think of iovec/iov_iter...
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