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    SubjectRe: [PATCH 2/5] writeback: dirty position control
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    On Fri, 2011-08-12 at 00:56 +0200, Peter Zijlstra wrote:
    >
    > s - x 3
    > f(x) := 1 + (-----)
    > d
    >
    btw, if you want steeper slopes for rampup and brake you can add another
    factor like:

    s - x 3
    f(x) := 1 + a(-----)
    d

    And solve the whole f(l)=0 thing again to determine d in l and a.

    For 0 < a < 1 the slopes increase.


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