Re: [PATCH] dcache: faster dentry_cmp()

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On Wed, Feb 15, 2012 at 01:45:27AM +0300, Alexey Dobriyan wrote:
> 1) consistently use "unsigned int" for dentry name length,
> 2) reuse subtraction result for return value, exact value doesn't matter
>    because function is only used in boolean context,
> 3) use *p++ idiom for even better code.
> 
> All of this results in performance speedup of "git diff"
> which is way out of statistical error (0.4% vs 0.15% of 3 sigma):

Would you have any interest to port this patch on top of
Linus' latest changes there? 0.4% increase is nothing to
sneeze at. There may be some improvements with the
DCACHE_WORD_ACCESS code too.
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