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SubjectRe: Silicon Image 3112A SATA trouble
On Sun, Nov 30 2003, Jeff Garzik wrote:
> Jens Axboe wrote:
> >>Well, the constraint we must satisfy is
> >>
> >> sector_count % 15 != 1
> >
> >
> > (sector_count % 15 != 1) && (sector_count != 1)
> >
> >to be more precise :)
>
>
> Thanks for the clarification, I did not know that.
>
> Avoiding sector_count==1 requires additional code :( Valid requests
> might be a single sector. With page-based blkdevs requests smaller than
> a page would certainly be infrequent, but are still possible, with bsg
> for example...

You misread it... sector_count == 1 is fine, sector_count % 15 == 1 is
ok when sector_count is 1 (it would have to be, or sector_count == 1
would not be ok :)

--
Jens Axboe

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