From: Christoph Lameter <clameter@engr.sgi.com>
Date: Tue, 6 Sep 2005 22:16:46 +0000 (-0700)
Subject: [PATCH] radix-tree: Remove unnecessary indirections and clean up code
X-Git-Tag: v2.6.14-rc1~720
X-Git-Url: https://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=201b6264ff3865090747f58f48e087c3a35e0dbc;p=pandora-kernel.git

[PATCH] radix-tree: Remove unnecessary indirections and clean up code

- There is frequent use of indirections in the radix code. This patch
  removes those indirections, makes the code more readable and allows
  the compilers to generate better code.

- Removing indirections allows the removal of several casts.

- Removing indirections allows the reduction of the radix_tree_path
  size from 3 to 2 words.

- Use pathp-> consistently.

- Remove unnecessary tmp variable in radix_tree_insert

- Separate the upper layer processing from the lowest layer in __lookup()
  in order to make it easier to understand what is going on and allow
  compilers to generate better code for the loop.

Signed-off-by: Christoph Lameter <clameter@sgi.com>
Cc: Nick Piggin <nickpiggin@yahoo.com.au>
Cc: James Bottomley <James.Bottomley@steeleye.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---

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