From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from cn.fujitsu.com ([59.151.112.132]:51945 "EHLO heian.cn.fujitsu.com" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S1753695AbbLROMl (ORCPT ); Fri, 18 Dec 2015 09:12:41 -0500 Received: from G08CNEXCHPEKD01.g08.fujitsu.local (unknown [10.167.33.80]) by cn.fujitsu.com (Postfix) with ESMTP id 1F9B34092563 for ; Fri, 18 Dec 2015 22:12:13 +0800 (CST) From: Zhao Lei To: CC: Zhao Lei Subject: [PATCH 3/3] btrfs: Add missed segment checking in reada_find_zone Date: Fri, 18 Dec 2015 22:10:21 +0800 Message-ID: <9df6577e7e2660fc61483b9fdf96aa51f81e8a10.1450447809.git.zhaolei@cn.fujitsu.com> In-Reply-To: References: MIME-Version: 1.0 Content-Type: text/plain Sender: linux-btrfs-owner@vger.kernel.org List-ID: In rechecking zone-in-tree, we still need to check zone include our logical address. Signed-off-by: Zhao Lei --- fs/btrfs/reada.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/fs/btrfs/reada.c b/fs/btrfs/reada.c index d8116fe..c65b42f 100644 --- a/fs/btrfs/reada.c +++ b/fs/btrfs/reada.c @@ -303,8 +303,10 @@ static struct reada_zone *reada_find_zone(struct btrfs_fs_info *fs_info, kfree(zone); ret = radix_tree_gang_lookup(&dev->reada_zones, (void **)&zone, logical >> PAGE_CACHE_SHIFT, 1); - if (ret == 1) + if (ret == 1 && logical >= zone->start && logical <= zone->end) kref_get(&zone->refcnt); + else + zone = NULL; } spin_unlock(&fs_info->reada_lock); -- 1.8.5.1