From patchwork Tue Oct 23 09:41:41 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Su Yue X-Patchwork-Id: 10652875 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 7B36914BD for ; Tue, 23 Oct 2018 09:34:46 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 5D04728FF5 for ; Tue, 23 Oct 2018 09:34:46 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 515C22901D; Tue, 23 Oct 2018 09:34:46 +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=-7.9 required=2.0 tests=BAYES_00,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 02F5328F29 for ; Tue, 23 Oct 2018 09:34:46 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728606AbeJWR5T (ORCPT ); Tue, 23 Oct 2018 13:57:19 -0400 Received: from mail.cn.fujitsu.com ([183.91.158.132]:2023 "EHLO heian.cn.fujitsu.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1728020AbeJWR5T (ORCPT ); Tue, 23 Oct 2018 13:57:19 -0400 X-IronPort-AV: E=Sophos;i="5.43,368,1503331200"; d="scan'208";a="46602834" Received: from unknown (HELO cn.fujitsu.com) ([10.167.33.5]) by heian.cn.fujitsu.com with ESMTP; 23 Oct 2018 17:34:43 +0800 Received: from G08CNEXCHPEKD01.g08.fujitsu.local (unknown [10.167.33.80]) by cn.fujitsu.com (Postfix) with ESMTP id B0F9E4B6EDAD for ; Tue, 23 Oct 2018 17:34:39 +0800 (CST) Received: from archlinux.g08.fujitsu.local (10.167.226.24) by G08CNEXCHPEKD01.g08.fujitsu.local (10.167.33.89) with Microsoft SMTP Server (TLS) id 14.3.408.0; Tue, 23 Oct 2018 17:34:45 +0800 From: Su Yue To: CC: Subject: [PATCH 07/13] btrfs-progs: lowmem: delete unaligned bytes extent data under repair Date: Tue, 23 Oct 2018 17:41:41 +0800 Message-ID: <20181023094147.7906-8-suy.fnst@cn.fujitsu.com> X-Mailer: git-send-email 2.19.1 In-Reply-To: <20181023094147.7906-1-suy.fnst@cn.fujitsu.com> References: <20181023094147.7906-1-suy.fnst@cn.fujitsu.com> MIME-Version: 1.0 X-Originating-IP: [10.167.226.24] X-yoursite-MailScanner-ID: B0F9E4B6EDAD.AE90F X-yoursite-MailScanner: Found to be clean X-yoursite-MailScanner-From: suy.fnst@cn.fujitsu.com Sender: linux-btrfs-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-btrfs@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP If found a extent data item has unaligned part, lowmem repair just deletes it. Signed-off-by: Su Yue Reviewed-by: Qu Wenruo --- check/mode-lowmem.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/check/mode-lowmem.c b/check/mode-lowmem.c index 3c9ecff7e498..5381096fa8b2 100644 --- a/check/mode-lowmem.c +++ b/check/mode-lowmem.c @@ -2972,6 +2972,7 @@ out: } /* + * If @err contains BYTES_UNALIGNED then delete the extent data item. * If @err contains BACKREF_MISSING then add extent of the * file_extent_data_item. * @@ -3023,6 +3024,13 @@ static int repair_extent_data_item(struct btrfs_root *root, else parent = 0; + if (err & BYTES_UNALIGNED) { + ret = delete_item(root, pathp); + if (!ret) + err = 0; + goto out; + } + /* now repair only adds backref */ if ((err & BACKREF_MISSING) == 0) return err;