Re: [PATCH 6/8] libata: adjust speed down rules

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Tejun Heo wrote:
Speed down rules were too conservative.  Adjust them a bit.

* More than 10 timeouts can't happen in 5 minutes as command timeout
  is 30secs.  Lower the limit for rule #1 to 6.

* 10 timeouts is too high for rule #3 too.  Lower it to 6.

* SATAPI can benefit from falling back to PIO too.  Allow SATAPI
  devices to fall back to PIO.
..

Mmmm...  I see two remaining problems with this:

-- bad sectors (media errors) will cause inappropriate speed-downs.
-- deliberate (or otherwise) errors via SG_IO will cause inappropriate speed-downs.

Right?
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