linux-kernel - Re: [PATCH 01/75] net: add APIs for manipulating skb page fragments.

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Message-ID: <1314220141.17978.693.camel@dagon.hellion.org.uk>
Date:	Wed, 24 Aug 2011 22:09:01 +0100
From:	Ian Campbell <Ian.Campbell@...citrix.com>
To:	Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>
CC:	"netdev@...r.kernel.org" <netdev@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"David S. Miller" <davem@...emloft.net>,
	Eric Dumazet <eric.dumazet@...il.com>,
	Michał Mirosław <mirq-linux@...e.qmqm.pl>
Subject: Re: [PATCH 01/75] net: add APIs for manipulating skb page
 fragments.

On Wed, 2011-08-24 at 19:21 +0100, Konrad Rzeszutek Wilk wrote:
> On Fri, Aug 19, 2011 at 02:26:33PM +0100, Ian Campbell wrote:
> > The primary aim is to add skb_frag_(ref|unref) in order to remove the use of
> > bare get/put_page on SKB pages fragments and to isolate users from subsequent
> > changes to the skb_frag_t data structure.
> > 
> > Also included are helper APIs for passing a paged fragment to kmap and
> > dma_map_page since I was seeing the same pattern a lot. A helper for
> > pci_map_page is ommitted due to Michał Mirosław's recommendation that users
> > should transition to pci_map_page instead.
> 
> You mean "transition to dma_map_page instead." ?

That's right, oops.

Ian.


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