Re: [patch 1/2] ufd v1 - unsequential O(1) fdmap core

[Ingo Molnar]

* Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> wrote:

> I must say that it's not really clear to me why this fdmap thing was 
> created.  Exactly what problem is it solving, and what properties is 
> it designed to have?
> 
> Could not a (prehaps suitably modified) IDR tree have adequately 
> provided those properties?
> 
> I'm sure it's good stuff, but the patches were presented as if we all 
> know what they're for.  But I don't.  Maybe I was asleep at the time.

i think this sums it up:

 http://www.uwsg.iu.edu/hypermail/linux/kernel/0705.3/2490.html

and some more, with a benchmark as well:

 http://linux.derkeiler.com/Mailing-Lists/Kernel/2007-05/msg13685.html

( blame Google for picking up two different lkml archives for the two
  searches i did :-)

	Ingo
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