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    SubjectRe : Re : sparsemem usage
    Alan Cox wrote:
    > Mapping out parts of a section is quite normal - think about the 640K to
    > 1Mb hole in PC memory space.

    OK. But I'm still worry. Please consider the following code

    for (...; ...; ...) {
    if (pfn_valid(i))

    In that case num_physpages won't store an accurate value. Still it will be
    used by the kernel to make some statistic assumptions on other kernel
    data structure sizes.


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