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    SubjectRe: [PATCH 01/75] net: add APIs for manipulating skb page fragments.
    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." ?
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