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    SubjectRe: [PATCH 3/4] Change dmapool free block management
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    From: Matthew Wilcox <willy@linux.intel.com>
    Date: Wed, 26 Sep 2007 15:01:18 -0400

    > Also add documentation for how dma pools work, move the header above the
    > includes, add my copyright, add the original author's copyright, add a
    > GPL v2 licence to the file and fix the includes.
    >
    > Signed-off-by: Matthew Wilcox <willy@linux.intel.com>

    Correct or not, you need to describe how you are changing the
    free block management, why that transformation is valid and
    worthwhile, etc.

    I can see that you're getting rid of a bitmap and replacing it
    with the dma_page->in_use et al. stuff, but you need to describe
    that in detail.
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