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    SubjectRe: Silicon Image 3112A SATA trouble
    On Sun, Nov 30, 2003 at 06:10:06PM +0100, Jens Axboe wrote:

    > On Sun, Nov 30 2003, Jeff Garzik wrote:
    > > Bartlomiej Zolnierkiewicz wrote:
    > > >On Sunday 30 of November 2003 17:51, Jens Axboe wrote:
    > > >>>Tangent: My non-pessimistic fix will involve submitting a single sector
    > > >>>DMA r/w taskfile manually, then proceeding with the remaining sectors in
    > > >>>another r/w taskfile. This doubles the interrupts on the affected
    > > >>>chipset/drive combos, but still allows large requests. I'm not terribly
    > > >>
    > > >>Or split the request 50/50.
    > > >
    > > >
    > > >We can't - hardware will lock up.
    > >
    > > Well, the constraint we must satisfy is
    > >
    > > sector_count % 15 != 1
    >
    > (sector_count % 15 != 1) && (sector_count != 1)
    >
    > to be more precise :)

    I think you wanted to say:

    (sector_count % 15 != 1) || (sector_count == 1)

    --
    Vojtech Pavlik
    SuSE Labs, SuSE CR
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