From patchwork Tue Dec 15 06:54:13 2009 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Miao Xie X-Patchwork-Id: 67534 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by demeter.kernel.org (8.14.2/8.14.2) with ESMTP id nBF6nmq2002929 for ; Tue, 15 Dec 2009 06:49:48 GMT Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753450AbZLOGtq (ORCPT ); Tue, 15 Dec 2009 01:49:46 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753462AbZLOGtq (ORCPT ); Tue, 15 Dec 2009 01:49:46 -0500 Received: from cn.fujitsu.com ([222.73.24.84]:54787 "EHLO song.cn.fujitsu.com" rhost-flags-OK-FAIL-OK-OK) by vger.kernel.org with ESMTP id S1752337AbZLOGtp (ORCPT ); Tue, 15 Dec 2009 01:49:45 -0500 Received: from tang.cn.fujitsu.com (tang.cn.fujitsu.com [10.167.250.3]) by song.cn.fujitsu.com (Postfix) with ESMTP id 590D917008D; Tue, 15 Dec 2009 14:49:44 +0800 (CST) Received: from fnst.cn.fujitsu.com (tang.cn.fujitsu.com [127.0.0.1]) by tang.cn.fujitsu.com (8.14.3/8.13.1) with ESMTP id nBF6mL2q018544; Tue, 15 Dec 2009 14:48:21 +0800 Received: from [127.0.0.1] (unknown [10.167.141.211]) by fnst.cn.fujitsu.com (Postfix) with ESMTPA id 558A4D430D; Tue, 15 Dec 2009 14:50:03 +0800 (CST) Message-ID: <4B273295.6000605@cn.fujitsu.com> Date: Tue, 15 Dec 2009 14:54:13 +0800 From: Miao Xie Reply-To: miaox@cn.fujitsu.com User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; zh-CN; rv:1.9.1.5) Gecko/20091204 Thunderbird/3.0 MIME-Version: 1.0 To: Chris Mason CC: Linux Btrfs Subject: [PATCH 2/4] btrfs: cleanup the code in lookup_extent_mapping() Sender: linux-btrfs-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-btrfs@vger.kernel.org diff --git a/fs/btrfs/extent_map.c b/fs/btrfs/extent_map.c index 16744f4..ef49e31 100644 --- a/fs/btrfs/extent_map.c +++ b/fs/btrfs/extent_map.c @@ -330,11 +330,6 @@ struct extent_map *lookup_extent_mapping(struct extent_map_tree *tree, u64 end = range_end(start, len); rb_node = __tree_search(&tree->map, start, &prev, &next); - if (!rb_node && prev) { - em = rb_entry(prev, struct extent_map, rb_node); - if (end > em->start && start < extent_map_end(em)) - goto found; - } if (!rb_node && next) { em = rb_entry(next, struct extent_map, rb_node); if (end > em->start && start < extent_map_end(em))