[<prev] [next>] [<thread-prev] [day] [month] [year] [list]
Date: Sun, 9 Sep 2018 12:07:14 -0700
From: Matthew Wilcox <willy@...radead.org>
To: Wang Long <wanglong19@...tuan.com>
Cc: akpm@...ux-foundation.org, zwisler@...nel.org,
linux-kernel@...r.kernel.org, jack@...e.cz, heguanjun@...tuan.com
Subject: Re: [PATCH] radix-tree: optimization for radix_tree_init_maxnodes
On Sun, Sep 09, 2018 at 09:21:00PM +0800, Wang Long wrote:
> if i == 0, height_to_maxnodes[i] = 0,
> if i >= 1, height_to_maxnodes[i] = height_to_maxnodes[i-1]
> + __maxindex(i-1) + 1.
>
> so delete height_to_maxindex and optimize the calculation of
> height_to_maxnodes array.
Thanks for your patch. Unfortunately, this entire function is scheduled
for deletion, so I won't be applying it.
If you're interested in the radix tree, I'd recommend looking at its
replacement, the XArray. The current version is at
http://git.infradead.org/users/willy/linux-dax.git/shortlog/refs/heads/xarray
but I'll be pushing another version out in the next few days.
Powered by blists - more mailing lists