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    SubjectRe: [PATCH 3/3] fs/sysv: stop using write_super and s_dirt
    > drity and then setting the s_dirt flag. And when 'write_super()' is executed to
    > handle the s_dirt flag, we just update the timestamp and again mark the
    > superblock buffer as dirty. Seems pointless.

    It's the way sysv itself does stuff. The timestamp on v7/sys3/sys5
    reflects the clock on the box. A lot of ancient boxes with no decent
    hardware clocks used to reset the system time off the root fs superblock
    on a loss of power.

    Alan


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