Re: [RFC PATCH] ulist: generic data structure to build unique lists

From: Arne Jansen
Date: Tue Nov 01 2011 - 03:37:16 EST


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On 12.10.2011 01:37, Andrew Morton wrote:
>
> Generally, I really do ask that you provide us a complete description
> of what this utility is supposed to do. Once that is understood we can
> then start to determine why none of the existing container helpers were
> suitable, and were not capable of being modified to be suitable.

Thanks for your kind comments. I sent an updated version to the list
accordingly. Please let me know if the documentation is good enough
and shows the purpose clearly.

>
> For example, from a quick squint at the code I'm wondering why
> flex_array was unsuitable.
>

ulist is currently implemented as an array, but this is not the way
to go to scale to larger lists. I'd rather switch to using rbtrees
over a certain threshold and will do so as soon as we settle on
putting it in lib/ instead of burying it inside fs/btrfs.

- -Arne
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