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    SubjectRe: [patch] block highmem zero-bounce #17
    On Fri, Oct 19 2001, Andreas Schwab wrote:
    > using a private struct. Why did you switch to struct scatterlist in the
    > first place??

    BTW, let me expand on this one. The sg_list change was dropped, davem
    and I decided to evolve the current scatterlist in two steps:

    - add ->page and ->offset and have the PCI DMA mapping interface use
    that if available. This step has already been taken with the pci64

    - Remove ->address completely. This step must be taken to ensure that
    drivers will be highmem safe. Period. Don't know when we will do this

    Jens Axboe

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