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Thu, 18 Feb 2021 16:45:36 +0000 From: Allison Henderson To: linux-xfs@vger.kernel.org Subject: [PATCH v15 11/37] xfsprogs: Check for extent overflow when swapping extents Date: Thu, 18 Feb 2021 09:44:46 -0700 Message-Id: <20210218164512.4659-12-allison.henderson@oracle.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20210218164512.4659-1-allison.henderson@oracle.com> References: <20210218164512.4659-1-allison.henderson@oracle.com> Content-Type: text/plain X-Originating-IP: [67.1.223.248] X-ClientProxiedBy: BYAPR11CA0088.namprd11.prod.outlook.com (2603:10b6:a03:f4::29) To BY5PR10MB4306.namprd10.prod.outlook.com (2603:10b6:a03:211::7) MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 Received: from localhost.localdomain (67.1.223.248) by BYAPR11CA0088.namprd11.prod.outlook.com (2603:10b6:a03:f4::29) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3868.27 via Frontend Transport; Thu, 18 Feb 2021 16:45:35 +0000 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: b8a13f60-583f-4a5a-f13c-08d8d42c9d72 X-MS-TrafficTypeDiagnostic: BY5PR10MB4290: X-Microsoft-Antispam-PRVS: X-MS-Oob-TLC-OOBClassifiers: OLM:221; 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Reviewed-by: Darrick J. Wong Reviewed-by: Allison Henderson Signed-off-by: Chandan Babu R Signed-off-by: Darrick J. Wong Signed-off-by: Allison Henderson --- libxfs/xfs_inode_fork.h | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/libxfs/xfs_inode_fork.h b/libxfs/xfs_inode_fork.h index c8f279e..9e2137c 100644 --- a/libxfs/xfs_inode_fork.h +++ b/libxfs/xfs_inode_fork.h @@ -89,6 +89,13 @@ struct xfs_ifork { #define XFS_IEXT_REFLINK_END_COW_CNT (2) /* + * Removing an initial range of source/donor file's extent and adding a new + * extent (from donor/source file) in its place will cause extent count to + * increase by 1. + */ +#define XFS_IEXT_SWAP_RMAP_CNT (1) + +/* * Fork handling. */ -- 2.7.4