From patchwork Thu Sep 1 00:31:04 2011 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Darrick J. Wong" X-Patchwork-Id: 112757 Return-Path: X-Original-To: patchwork-incoming@ozlabs.org Delivered-To: patchwork-incoming@ozlabs.org Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id E4C3BB6F68 for ; Thu, 1 Sep 2011 10:36:14 +1000 (EST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757184Ab1IAAbQ (ORCPT ); Wed, 31 Aug 2011 20:31:16 -0400 Received: from e7.ny.us.ibm.com ([32.97.182.137]:59821 "EHLO e7.ny.us.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756999Ab1IAAbO (ORCPT ); Wed, 31 Aug 2011 20:31:14 -0400 Received: from d01relay06.pok.ibm.com (d01relay06.pok.ibm.com [9.56.227.116]) by e7.ny.us.ibm.com (8.14.4/8.13.1) with ESMTP id p7VNBAJW025870; Wed, 31 Aug 2011 19:11:10 -0400 Received: from d01av02.pok.ibm.com (d01av02.pok.ibm.com [9.56.224.216]) by d01relay06.pok.ibm.com (8.13.8/8.13.8/NCO v10.0) with ESMTP id p810VD7Y1126636; Wed, 31 Aug 2011 20:31:13 -0400 Received: from d01av02.pok.ibm.com (loopback [127.0.0.1]) by d01av02.pok.ibm.com (8.14.4/8.13.1/NCO v10.0 AVout) with ESMTP id p810V7On011661; Wed, 31 Aug 2011 21:31:13 -0300 Received: from elm3c44.beaverton.ibm.com ([9.47.69.44]) by d01av02.pok.ibm.com (8.14.4/8.13.1/NCO v10.0 AVin) with ESMTP id p810V4SS011487; Wed, 31 Aug 2011 21:31:04 -0300 Subject: [PATCH 05/16] ext4: Create a rocompat flag for extended metadata checksumming To: Andreas Dilger , Theodore Tso , "Darrick J. Wong" From: "Darrick J. Wong" Cc: Sunil Mushran , Amir Goldstein , linux-kernel , Andi Kleen , Mingming Cao , Joel Becker , linux-fsdevel , linux-ext4@vger.kernel.org, Coly Li Date: Wed, 31 Aug 2011 17:31:04 -0700 Message-ID: <20110901003104.31048.86177.stgit@elm3c44.beaverton.ibm.com> In-Reply-To: <20110901003030.31048.99467.stgit@elm3c44.beaverton.ibm.com> References: <20110901003030.31048.99467.stgit@elm3c44.beaverton.ibm.com> User-Agent: StGit/0.15 MIME-Version: 1.0 Sender: linux-ext4-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-ext4@vger.kernel.org This patch introduces a rocompat feature flag to signal the presence of checksums for metadata blocks. It also pulls in CRC32c since we'll be using that for the new checksums. Signed-off-by: Darrick J. Wong --- fs/ext4/Kconfig | 1 + fs/ext4/ext4.h | 4 +++- 2 files changed, 4 insertions(+), 1 deletions(-) -- To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html diff --git a/fs/ext4/Kconfig b/fs/ext4/Kconfig index 9ed1bb1..97f4a7d 100644 --- a/fs/ext4/Kconfig +++ b/fs/ext4/Kconfig @@ -2,6 +2,7 @@ config EXT4_FS tristate "The Extended 4 (ext4) filesystem" select JBD2 select CRC16 + select LIBCRC32C help This is the next generation of the ext3 filesystem. diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h index ecb86c2..f79ddac 100644 --- a/fs/ext4/ext4.h +++ b/fs/ext4/ext4.h @@ -1359,6 +1359,7 @@ static inline void ext4_clear_state_flags(struct ext4_inode_info *ei) #define EXT4_FEATURE_RO_COMPAT_DIR_NLINK 0x0020 #define EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE 0x0040 #define EXT4_FEATURE_RO_COMPAT_QUOTA 0x0100 +#define EXT4_FEATURE_RO_COMPAT_METADATA_CSUM 0x0400 #define EXT4_FEATURE_INCOMPAT_COMPRESSION 0x0001 #define EXT4_FEATURE_INCOMPAT_FILETYPE 0x0002 @@ -1401,7 +1402,8 @@ static inline void ext4_clear_state_flags(struct ext4_inode_info *ei) EXT4_FEATURE_RO_COMPAT_DIR_NLINK | \ EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE | \ EXT4_FEATURE_RO_COMPAT_BTREE_DIR |\ - EXT4_FEATURE_RO_COMPAT_HUGE_FILE) + EXT4_FEATURE_RO_COMPAT_HUGE_FILE |\ + EXT4_FEATURE_RO_COMPAT_METADATA_CSUM) /* * Default values for user and/or group using reserved blocks