Re: [2.5] DAC960

From: Jens Axboe (
Date: Fri Sep 20 2002 - 01:20:13 EST

On Thu, Sep 19 2002, Dave Olien wrote:
> Daniel
> Here's my latest progress on my changes to the DAC960 driver.
> I spent Tuesday banging my head trying to figure out why data blocks
> written to disk to SOMETIMES were read back with DIFFERENT data.
> On wednesday, I changed from using Linux 2.5.34 to using Linux 2.5.36.
> My bad data problem went away with that change. There must have been
> an important change in the 2.5.36 BIO code.

Neither 2.5.35 nor 2.5.36 has any critical bio fixes, so I would look
into this a bit more if I were you. Only if you were using
bio_kmap_irq() would there be something to look for, but DAC960 is not.
That was 2.5.35. 2.5.36 just starts sizing bio_vec pools based on free
memory, no bug fixes. Likewise in the block layer, I'm not seeing

Jens Axboe

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