From patchwork Wed Aug 24 02:24:43 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Darrick J. Wong" X-Patchwork-Id: 9296713 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 95455607D0 for ; Wed, 24 Aug 2016 02:24:53 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 7E20822376 for ; Wed, 24 Aug 2016 02:24:53 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 72AB128DBF; Wed, 24 Aug 2016 02:24:53 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-4.2 required=2.0 tests=BAYES_00, RCVD_IN_DNSWL_MED, UNPARSEABLE_RELAY autolearn=ham version=3.3.1 Received: from oss.sgi.com (oss.sgi.com [192.48.182.195]) (using TLSv1 with cipher DHE-RSA-CAMELLIA256-SHA (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id E2CA222376 for ; Wed, 24 Aug 2016 02:24:52 +0000 (UTC) Received: from oss.sgi.com (localhost [IPv6:::1]) by oss.sgi.com (Postfix) with ESMTP id DAAD77CAF; Tue, 23 Aug 2016 21:24:51 -0500 (CDT) X-Original-To: xfs@oss.sgi.com Delivered-To: xfs@oss.sgi.com Received: from relay.sgi.com (relay3.corp.sgi.com [198.149.34.15]) by oss.sgi.com (Postfix) with ESMTP id 312F57CA1 for ; Tue, 23 Aug 2016 21:24:50 -0500 (CDT) Received: from cuda.sgi.com (cuda2.sgi.com [192.48.176.25]) by relay3.corp.sgi.com (Postfix) with ESMTP id 990F2AC005 for ; Tue, 23 Aug 2016 19:24:49 -0700 (PDT) X-ASG-Debug-ID: 1472005487-0bf57b5312158f30001-NocioJ Received: from userp1040.oracle.com (userp1040.oracle.com [156.151.31.81]) by cuda.sgi.com with ESMTP id Q9RTlJSlGMzUEWVP (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NO) for ; Tue, 23 Aug 2016 19:24:48 -0700 (PDT) X-Barracuda-Envelope-From: darrick.wong@oracle.com X-Barracuda-Effective-Source-IP: userp1040.oracle.com[156.151.31.81] X-Barracuda-Apparent-Source-IP: 156.151.31.81 Received: from aserv0021.oracle.com (aserv0021.oracle.com [141.146.126.233]) by userp1040.oracle.com (Sentrion-MTA-4.3.2/Sentrion-MTA-4.3.2) with ESMTP id u7O2OkcN023509 (version=TLSv1 cipher=DHE-RSA-AES256-SHA bits=256 verify=OK); Wed, 24 Aug 2016 02:24:46 GMT Received: from userv0121.oracle.com (userv0121.oracle.com [156.151.31.72]) by aserv0021.oracle.com (8.13.8/8.13.8) with ESMTP id u7O2OjEQ010432 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=OK); Wed, 24 Aug 2016 02:24:45 GMT Received: from abhmp0017.oracle.com (abhmp0017.oracle.com [141.146.116.23]) by userv0121.oracle.com (8.13.8/8.13.8) with ESMTP id u7O2OjUx017766; Wed, 24 Aug 2016 02:24:45 GMT Received: from localhost (/24.21.211.40) by default (Oracle Beehive Gateway v4.0) with ESMTP ; Tue, 23 Aug 2016 19:24:44 -0700 Subject: [PATCH 3/7] xfs: simple btree query range should look right if LE lookup fails From: "Darrick J. Wong" X-ASG-Orig-Subj: [PATCH 3/7] xfs: simple btree query range should look right if LE lookup fails To: david@fromorbit.com, darrick.wong@oracle.com Date: Tue, 23 Aug 2016 19:24:43 -0700 Message-ID: <147200548364.15538.8448801693088924431.stgit@birch.djwong.org> In-Reply-To: <147200546481.15538.12724000421579716885.stgit@birch.djwong.org> References: <147200546481.15538.12724000421579716885.stgit@birch.djwong.org> User-Agent: StGit/0.17.1-dirty MIME-Version: 1.0 X-Source-IP: aserv0021.oracle.com [141.146.126.233] X-Barracuda-Connect: userp1040.oracle.com[156.151.31.81] X-Barracuda-Start-Time: 1472005487 X-Barracuda-Encrypted: ECDHE-RSA-AES256-GCM-SHA384 X-Barracuda-URL: https://192.48.176.25:443/cgi-mod/mark.cgi X-Barracuda-Scan-Msg-Size: 951 X-Virus-Scanned: by bsmtpd at sgi.com X-Barracuda-BRTS-Status: 1 X-Barracuda-Spam-Score: 0.00 X-Barracuda-Spam-Status: No, SCORE=0.00 using per-user scores of TAG_LEVEL=1000.0 QUARANTINE_LEVEL=1000.0 KILL_LEVEL=2.7 tests=BSF_SC0_MISMATCH_TO, UNPARSEABLE_RELAY X-Barracuda-Spam-Report: Code version 3.2, rules version 3.2.3.32271 Rule breakdown below pts rule name description ---- ---------------------- -------------------------------------------------- 0.00 BSF_SC0_MISMATCH_TO Envelope rcpt doesn't match header 0.00 UNPARSEABLE_RELAY Informational: message has unparseable relay lines Cc: linux-xfs@vger.kernel.org, xfs@oss.sgi.com X-BeenThere: xfs@oss.sgi.com X-Mailman-Version: 2.1.14 Precedence: list List-Id: XFS Filesystem from SGI List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: xfs-bounces@oss.sgi.com Sender: xfs-bounces@oss.sgi.com X-Virus-Scanned: ClamAV using ClamSMTP If the initial LOOKUP_LE in the simple query range fails to find anything, we should attempt to increment the btree cursor to see if there actually /are/ records for what we're trying to find. Without this patch, a bnobt range query of (0, $agsize) returns no results because the leftmost record never has a startblock of zero. Signed-off-by: Darrick J. Wong Reviewed-by: Christoph Hellwig --- libxfs/xfs_btree.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/libxfs/xfs_btree.c b/libxfs/xfs_btree.c index b69c8d2..8e928ea 100644 --- a/libxfs/xfs_btree.c +++ b/libxfs/xfs_btree.c @@ -4558,6 +4558,13 @@ xfs_btree_simple_query_range( if (error) goto out; + /* Nothing? See if there's anything to the right. */ + if (!stat) { + error = xfs_btree_increment(cur, 0, &stat); + if (error) + goto out; + } + while (stat) { /* Find the record. */ error = xfs_btree_get_rec(cur, &recp, &stat);