Re: [PATCH 3/5] libata: Implement disk shock protection support

[Pavel Machek]

On Tue 2008-08-05 17:14:02, Eric Piel wrote:
> Theodore Tso schreef:
>> The real right answer though is to buy one of the laptop drives (such
>> as the Seagate Momentus 7200.2 or 7200.3) which has the anti-shock
>> detection built directly into the hard drive.  That way you don't have
>> to have a daemon that sits in the OS waking up the CPU some 20 to 30
>> times a second and burning up your battery even when the laptop is
>> idle.
> Well, it's not always _that_ bad. For instance, the accelerometer in the HP 
> laptops (lis3lv02dl) can monitor free-falls by itself. When the laptop 
> starts falling, it generates one interrupt.

I was told that "when it starts falling" is too late.

Thinkpads at least tried to detect the movement before fall: before
notebook falls off table, it is very likely to tilt a lot.
									Pavel
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