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    SubjectRe: Proposal for "proper" durable fsync() and fdatasync()
    On Tue, 26 Feb 2008 07:26:50 +0000 Jamie Lokier <jamie@shareable.org> wrote:

    > (It would be nicer if sync_file_range()
    > took a vector of ranges for better elevator scheduling, but let's
    > ignore that :-)

    Two passes:

    Pass 1: shove each of the segments into the queue with
    SYNC_FILE_RANGE_WAIT_BEFORE|SYNC_FILE_RANGE_WRITE

    Pass 2: wait for them all to complete and return accumulated result
    with SYNC_FILE_RANGE_WAIT_AFTER




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