linux-kernel - Re: [PATCH 6/7] radixtree: introduce radix_tree_scan

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Date:	Sat, 21 Jul 2007 14:36:29 +0800
From:	Fengguang Wu <wfg@...l.ustc.edu.cn>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	linux-kernel@...r.kernel.org, Nick Piggin <nickpiggin@...oo.com.au>
Subject: Re: [PATCH 6/7] radixtree: introduce radix_tree_scan_hole()

On Fri, Jul 20, 2007 at 10:48:59PM -0700, Andrew Morton wrote:
> On Sat, 21 Jul 2007 12:43:06 +0800 Fengguang Wu <wfg@...l.ustc.edu.cn> wrote:
> 
> > Introduce radix_tree_scan_hole(root, index, max_scan) to scan radix tree
> > for the first hole. It will be used in interleaved readahead.
> 
> If you're ever feeling fantastically bored, please consider updating the
> userspace radix-tree test harness for this?  Cook up a couple of testcases
> for the new functionality?

Thanks for the reminding.  I'd add some test cases if I'm to optimize it.

But this _dumb_ scan function is obviously correct(and won't be too slow on
1M readahead).  In fact it is pretty suitable for testing the optimized one ;)

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