From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: 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) 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 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> In-Reply-To: <20181026201943.24131-1-stefanrin@gmail.com> References: <20181026201943.24131-1-stefanrin@gmail.com> Sender: linux-xfs-owner@vger.kernel.org List-ID: List-Id: xfs To: linux-xfs@vger.kernel.org --- 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; -- 2.14.5