hash cache tuning

[Robert Collins]

On Wed, 2007-08-22 at 15:33 +1000, Andrew Bennetts wrote:
> Robert Collins wrote:
> [...]
> > So I think there are two approaches; one is to probe for whether a stat
> > is re-readable accurately, another is to allow users to specify how
> > general they want the working tree to be.
> 
> I think you can't reliably determine timestamp resolution by stat(2)ing:
> http://www.kerneltraffic.org/kernel-traffic/kt20040605_260.html
> 
> I'm not sure if that's changed in current linux kernels, but even if it has,
> there are presumably still early 2.6 kernels in the wild with this behaviour.

Darn.

-Rob
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