From patchwork Fri Oct 26 20:19:42 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Stefan Ring X-Patchwork-Id: 10657879 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 2496A180E for ; Fri, 26 Oct 2018 20:20:19 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 9B4422CA67 for ; Fri, 26 Oct 2018 20:20:16 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 8F8512CA6F; Fri, 26 Oct 2018 20:20:16 +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=-8.0 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FROM,MAILING_LIST_MULTI,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 436F32CA67 for ; Fri, 26 Oct 2018 20:20:16 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1725965AbeJ0E6k (ORCPT ); Sat, 27 Oct 2018 00:58:40 -0400 Received: from mail-wm1-f51.google.com ([209.85.128.51]:53355 "EHLO mail-wm1-f51.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727636AbeJ0E6k (ORCPT ); Sat, 27 Oct 2018 00:58:40 -0400 Received: by mail-wm1-f51.google.com with SMTP id l26-v6so2620702wmh.3 for ; Fri, 26 Oct 2018 13:20:14 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:subject:date:message-id:in-reply-to:references; bh=T61thV06kE9575nDpO1UH+33zrbvpCm1oqtPuxSzXnU=; b=k2MdicMIJ4J6SHhs6w0vsnMyrRufstvTB1glwEN2sh1dRdwrOMvSYVJ2bVz3ja9h+b +1r1NMqw5/5zR698vDoNqcfnDaYg3kawkOS9MA/NsqI1CGdWuDfMEZyQuKJHiV1oOwSA lt5pLjBcPC8PhWzfIGnp7MXarycNqVrsZ7a8ke5u/YFbfIVlGcDkdbI8TIrAamPPzaE6 5QGJbgLW4sNaFxIT9KikYMOAxJP5T6+h2pC2JxHsNqAnceM8VqLDB/Zd7HTyfOCG+3W/ ERPnAiLUnTGZfcD5Zj2PIfVwJq93PNg9o0DcUC3lm90Qbvqt1YCxGBSuwXpyso0QY88V BotQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:subject:date:message-id:in-reply-to :references; bh=T61thV06kE9575nDpO1UH+33zrbvpCm1oqtPuxSzXnU=; b=kxvmV3lb6nc8SRBgj9du/g6JfkL3eeCTUH/+xo/8VehSBPjp1WGUm9WNJA+J4OAoFH xcsvt9xeciZNYmMdMfPWpvTip1+SiDwuDfqHueWObx11BLh/edWY9kbBZYSyHgTWhAK9 fX3aL/S/cHc0UXJgu8gur7KM68qO7DWPVKKy3tqBj7EHek+KLs2d7ObGPUu9r0HMNfrt 2T7G2XFe8YZ3AEju29ezVePANf4LkiCJrMyXrApRpwpcfrdRvo+6nk7xRanUO21KoahO yBk4hWIEQYMl3ielMpHOyhXlAL5njDxVxaEnHgxJPTFnQzxPb8z5dBEH4/MKlR42c9YM VZtQ== X-Gm-Message-State: AGRZ1gI+tM/EIy9svTYszuMN46+d9Q9URhCgHlX5nxBqhuXdr67DE+wc C+RcJ4R568enmAFVk0MYPSD7ljKo X-Google-Smtp-Source: AJdET5eYVi1tSr6PuYNlfDzeUwcYliIOf4q5/99pY/EOmKgmlhAR6+4GJtqdg9JkzLl785uYuXrMcg== X-Received: by 2002:a1c:2dc5:: with SMTP id t188-v6mr6254329wmt.94.1540585213563; Fri, 26 Oct 2018 13:20:13 -0700 (PDT) Received: from dyn.cm.kabsi.at (h081217199198.dyn.cm.kabsi.at. [81.217.199.198]) by smtp.gmail.com with ESMTPSA id 193-v6sm7669219wmj.21.2018.10.26.13.20.12 for (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Fri, 26 Oct 2018 13:20:12 -0700 (PDT) From: Stefan Ring To: linux-xfs@vger.kernel.org Subject: [PATCH 4/5] xfs_metadump: Zap unused space in inode btrees Date: Fri, 26 Oct 2018 22:19:42 +0200 Message-Id: <20181026201943.24131-5-stefanrin@gmail.com> X-Mailer: git-send-email 2.14.5 In-Reply-To: <20181026201943.24131-1-stefanrin@gmail.com> References: <20181026201943.24131-1-stefanrin@gmail.com> Sender: linux-xfs-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-xfs@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP --- db/metadump.c | 13 +++++++++++++ 1 file changed, 13 insertions(+) diff --git a/db/metadump.c b/db/metadump.c index a4867783..39183fb7 100644 --- a/db/metadump.c +++ b/db/metadump.c @@ -2173,6 +2173,19 @@ process_btinode( } pp = XFS_BMDR_PTR_ADDR(dib, 1, maxrecs); + + if (zero_stale_data) { + char *top; + + /* Unused btree key space */ + top = (char*)XFS_BMDR_KEY_ADDR(dib, nrecs + 1); + memset(top, 'a', (char*)pp - top); + + /* Unused btree ptr space */ + top = (char*)&pp[nrecs]; + memset(top, 'b', (char*)dib + XFS_DFORK_SIZE(dip, mp, whichfork) - top); + } + for (i = 0; i < nrecs; i++) { xfs_agnumber_t ag; xfs_agblock_t bno;