linux-kernel - RE: Generic B-tree implementation

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Message-ID: <JCEPIPKHCJGDMPOHDOIGCELEDFAA.gary@intrepid.com>
Date:	Tue, 18 Jul 2006 08:00:25 -0700
From:	"Gary Funck" <gary@...repid.com>
To:	"Linux Kernel Mailing List" <linux-kernel@...r.kernel.org>
Cc:	"Vishal Patil" <vishpat@...il.com>
Subject: RE: Generic B-tree implementation

Vishal Patil wrote:
> I said B-Tree and not binary tree, please read the explaination about
> B-tree at http://en.wikipedia.org/wiki/B-tree. Also I am aware of AVL
> trees.
> 
> I never claimed that my implementation is better or anything like
> that. I posted the code so that someone in need of the data structure
> might use it. Also I would be willing them to help with their project.

My reason for pointing out the other data strucutres is to note that there
might be search tree representations that are more appropriate for
implementation inside the kernel, and to perhaps encourage you to have
a look at implementing them as well.  Red-black trees in particular have
the property that they're reasonably well-balanced, and that the balancing
algorithm makes use of local information.  That means that the kernel might
be able to limit the level of locking required to update the tree.

I liked your B-tree implementation, and have saved a copy.  Too bad there
isn't the C/C++ equivalent of CPAN (comp.unix.sources is so passe`).  Your
B-tree implementation would make a nice addition to an archive of
handy C algorithm implementations.
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