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    SubjectRe: [PATCH 0/8] v5 De-couple sysfs memory directories from memory sections
    On Thu, 2010-08-12 at 12:08 -0700, Andrew Morton wrote:
    > > This set of patches allows for each directory created in sysfs
    > > to cover more than one memory section. The default behavior for
    > > sysfs directory creation is the same, in that each directory
    > > represents a single memory section. A new file 'end_phys_index'
    > > in each directory contains the physical_id of the last memory
    > > section covered by the directory so that users can easily
    > > determine the memory section range of a directory.
    > What you're proposing appears to be a non-back-compatible
    > userspace-visible change. This is a big issue!

    Nathan, one thought to get around this at the moment would be to bump up
    the size that we export in /sys/devices/system/memory/block_size_bytes.
    I think you have already done most of the hard work to accomplish

    You can still add the end_phys_index stuff. But, for now, it would
    always be equal to start_phys_index.

    -- Dave

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