From patchwork Thu Jul 21 04:59:37 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: 9240893 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 9314260756 for ; Thu, 21 Jul 2016 05:00:29 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 899A7205AA for ; Thu, 21 Jul 2016 05:00:29 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 7E3E327C38; Thu, 21 Jul 2016 05:00:29 +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=unavailable 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 E0BBD205AA for ; Thu, 21 Jul 2016 05:00:28 +0000 (UTC) Received: from oss.sgi.com (localhost [IPv6:::1]) by oss.sgi.com (Postfix) with ESMTP id DD9B37D32; Wed, 20 Jul 2016 23:59:47 -0500 (CDT) X-Original-To: xfs@oss.sgi.com Delivered-To: xfs@oss.sgi.com Received: from relay.sgi.com (relay2.corp.sgi.com [137.38.102.29]) by oss.sgi.com (Postfix) with ESMTP id 5E19F7D2D for ; Wed, 20 Jul 2016 23:59:45 -0500 (CDT) Received: from cuda.sgi.com (cuda3.sgi.com [192.48.176.15]) by relay2.corp.sgi.com (Postfix) with ESMTP id 3092A304043 for ; Wed, 20 Jul 2016 21:59:45 -0700 (PDT) X-ASG-Debug-ID: 1469077183-04cb6c03691a330001-NocioJ Received: from userp1040.oracle.com (userp1040.oracle.com [156.151.31.81]) by cuda.sgi.com with ESMTP id HBuJ45aFamrbDgfK (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NO) for ; Wed, 20 Jul 2016 21:59:43 -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 userv0021.oracle.com (userv0021.oracle.com [156.151.31.71]) by userp1040.oracle.com (Sentrion-MTA-4.3.2/Sentrion-MTA-4.3.2) with ESMTP id u6L4xfWE023740 (version=TLSv1 cipher=DHE-RSA-AES256-SHA bits=256 verify=OK); Thu, 21 Jul 2016 04:59:41 GMT Received: from aserv0122.oracle.com (aserv0122.oracle.com [141.146.126.236]) by userv0021.oracle.com (8.13.8/8.13.8) with ESMTP id u6L4xeRU009722 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=OK); Thu, 21 Jul 2016 04:59:41 GMT Received: from abhmp0016.oracle.com (abhmp0016.oracle.com [141.146.116.22]) by aserv0122.oracle.com (8.13.8/8.13.8) with ESMTP id u6L4xcRk026551; Thu, 21 Jul 2016 04:59:39 GMT Received: from localhost (/24.21.211.40) by default (Oracle Beehive Gateway v4.0) with ESMTP ; Wed, 20 Jul 2016 21:59:38 -0700 Subject: [PATCH 32/47] xfs: teach rmapbt to support interval queries From: "Darrick J. Wong" X-ASG-Orig-Subj: [PATCH 32/47] xfs: teach rmapbt to support interval queries To: david@fromorbit.com, darrick.wong@oracle.com Date: Wed, 20 Jul 2016 21:59:37 -0700 Message-ID: <146907717693.25461.18075011178601243719.stgit@birch.djwong.org> In-Reply-To: <146907695530.25461.3225785294902719773.stgit@birch.djwong.org> References: <146907695530.25461.3225785294902719773.stgit@birch.djwong.org> User-Agent: StGit/0.17.1-dirty MIME-Version: 1.0 X-Source-IP: userv0021.oracle.com [156.151.31.71] X-Barracuda-Connect: userp1040.oracle.com[156.151.31.81] X-Barracuda-Start-Time: 1469077183 X-Barracuda-Encrypted: ECDHE-RSA-AES256-GCM-SHA384 X-Barracuda-URL: https://192.48.176.15:443/cgi-mod/mark.cgi X-Barracuda-Scan-Msg-Size: 2455 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 3.2.3.31417 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-fsdevel@vger.kernel.org, vishal.l.verma@intel.com, bfoster@redhat.com, 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 Now that the generic btree code supports querying all records within a range of keys, use that functionality to allow us to ask for all the extents mapped to a range of physical blocks. v2: Move unwritten bit to rm_offset. Signed-off-by: Darrick J. Wong --- fs/xfs/libxfs/xfs_rmap.c | 43 +++++++++++++++++++++++++++++++++++++++++++ fs/xfs/libxfs/xfs_rmap.h | 9 +++++++++ 2 files changed, 52 insertions(+) diff --git a/fs/xfs/libxfs/xfs_rmap.c b/fs/xfs/libxfs/xfs_rmap.c index ce29d6b..6638bc7 100644 --- a/fs/xfs/libxfs/xfs_rmap.c +++ b/fs/xfs/libxfs/xfs_rmap.c @@ -183,3 +183,46 @@ out_error: trace_xfs_rmap_map_error(mp, agno, error, _RET_IP_); return error; } + +struct xfs_rmap_query_range_info { + xfs_rmap_query_range_fn fn; + void *priv; +}; + +/* Format btree record and pass to our callback. */ +STATIC int +xfs_rmap_query_range_helper( + struct xfs_btree_cur *cur, + union xfs_btree_rec *rec, + void *priv) +{ + struct xfs_rmap_query_range_info *query = priv; + struct xfs_rmap_irec irec; + int error; + + error = xfs_rmap_btrec_to_irec(rec, &irec); + if (error) + return error; + return query->fn(cur, &irec, query->priv); +} + +/* Find all rmaps between two keys. */ +int +xfs_rmap_query_range( + struct xfs_btree_cur *cur, + struct xfs_rmap_irec *low_rec, + struct xfs_rmap_irec *high_rec, + xfs_rmap_query_range_fn fn, + void *priv) +{ + union xfs_btree_irec low_brec; + union xfs_btree_irec high_brec; + struct xfs_rmap_query_range_info query; + + low_brec.r = *low_rec; + high_brec.r = *high_rec; + query.priv = priv; + query.fn = fn; + return xfs_btree_query_range(cur, &low_brec, &high_brec, + xfs_rmap_query_range_helper, &query); +} diff --git a/fs/xfs/libxfs/xfs_rmap.h b/fs/xfs/libxfs/xfs_rmap.h index aa39a2a..34c811a 100644 --- a/fs/xfs/libxfs/xfs_rmap.h +++ b/fs/xfs/libxfs/xfs_rmap.h @@ -151,4 +151,13 @@ int xfs_rmap_lookup_eq(struct xfs_btree_cur *cur, xfs_agblock_t bno, int xfs_rmap_get_rec(struct xfs_btree_cur *cur, struct xfs_rmap_irec *irec, int *stat); +typedef int (*xfs_rmap_query_range_fn)( + struct xfs_btree_cur *cur, + struct xfs_rmap_irec *rec, + void *priv); + +int xfs_rmap_query_range(struct xfs_btree_cur *cur, + struct xfs_rmap_irec *low_rec, struct xfs_rmap_irec *high_rec, + xfs_rmap_query_range_fn fn, void *priv); + #endif /* __XFS_RMAP_H__ */