From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from cn.fujitsu.com ([222.73.24.84]:47035 "EHLO song.cn.fujitsu.com" rhost-flags-OK-FAIL-OK-OK) by vger.kernel.org with ESMTP id S1758099AbcCVBiv (ORCPT ); Mon, 21 Mar 2016 21:38:51 -0400 From: Qu Wenruo To: linux-btrfs@vger.kernel.org Cc: Wang Xiaoguang Subject: [PATCH v8 16/27] btrfs: dedupe: add an inode nodedupe flag Date: Tue, 22 Mar 2016 09:35:41 +0800 Message-Id: <1458610552-9845-17-git-send-email-quwenruo@cn.fujitsu.com> In-Reply-To: <1458610552-9845-1-git-send-email-quwenruo@cn.fujitsu.com> References: <1458610552-9845-1-git-send-email-quwenruo@cn.fujitsu.com> MIME-Version: 1.0 Sender: linux-btrfs-owner@vger.kernel.org List-ID: From: Wang Xiaoguang Introduce BTRFS_INODE_NODEDUP flag, then we can explicitly disable online data dedupelication for specified files. Signed-off-by: Wang Xiaoguang --- fs/btrfs/ctree.h | 1 + fs/btrfs/ioctl.c | 6 +++++- 2 files changed, 6 insertions(+), 1 deletion(-) diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h index bed9273..b19c1f1 100644 --- a/fs/btrfs/ctree.h +++ b/fs/btrfs/ctree.h @@ -2428,6 +2428,7 @@ do { \ #define BTRFS_INODE_NOATIME (1 << 9) #define BTRFS_INODE_DIRSYNC (1 << 10) #define BTRFS_INODE_COMPRESS (1 << 11) +#define BTRFS_INODE_NODEDUPE (1 << 12) #define BTRFS_INODE_ROOT_ITEM_INIT (1 << 31) diff --git a/fs/btrfs/ioctl.c b/fs/btrfs/ioctl.c index 49bca5f..3c226b0 100644 --- a/fs/btrfs/ioctl.c +++ b/fs/btrfs/ioctl.c @@ -161,7 +161,8 @@ void btrfs_update_iflags(struct inode *inode) /* * Inherit flags from the parent inode. * - * Currently only the compression flags and the cow flags are inherited. + * Currently only the compression flags, dedupe flags and the cow flags + * are inherited. */ void btrfs_inherit_iflags(struct inode *inode, struct inode *dir) { @@ -186,6 +187,9 @@ void btrfs_inherit_iflags(struct inode *inode, struct inode *dir) BTRFS_I(inode)->flags |= BTRFS_INODE_NODATASUM; } + if (flags & BTRFS_INODE_NODEDUPE) + BTRFS_I(inode)->flags |= BTRFS_INODE_NODEDUPE; + btrfs_update_iflags(inode); } -- 2.7.3