From: Huang Shijie <shijie8@gmail.com>
Date: Tue, 16 Jun 2009 22:33:42 +0000 (-0700)
Subject: lib: do code optimization for radix_tree_lookup() and radix_tree_lookup_slot()
X-Git-Tag: v2.6.31-rc1~299^2~65
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=b72b71c6cb6ecc564d4d5f9c512a7df269837846;p=pandora-kernel.git

lib: do code optimization for radix_tree_lookup() and radix_tree_lookup_slot()

radix_tree_lookup() and radix_tree_lookup_slot() have much the
same code except for the return value.

Introduce radix_tree_lookup_element() to do the real work.

/*
 * is_slot == 1 : search for the slot.
 * is_slot == 0 : search for the node.
 */
static void * radix_tree_lookup_element(struct radix_tree_root *root,
					unsigned long index, int is_slot);

Signed-off-by: Huang Shijie <shijie8@gmail.com>
Cc: Nick Piggin <nickpiggin@yahoo.com.au>
Cc: Christoph Lameter <cl@linux-foundation.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

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