From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from cn.fujitsu.com ([222.73.24.84]:7891 "EHLO song.cn.fujitsu.com" rhost-flags-OK-FAIL-OK-OK) by vger.kernel.org with ESMTP id S1751342AbcBBDH5 (ORCPT ); Mon, 1 Feb 2016 22:07:57 -0500 From: Qu Wenruo To: linux-btrfs@vger.kernel.org Cc: Wang Xiaoguang Subject: [PATCH v5 18/19] btrfs: dedup: add per-file online dedup control Date: Tue, 2 Feb 2016 11:05:50 +0800 Message-Id: <1454382351-31775-19-git-send-email-quwenruo@cn.fujitsu.com> In-Reply-To: <1454382351-31775-1-git-send-email-quwenruo@cn.fujitsu.com> References: <1454382351-31775-1-git-send-email-quwenruo@cn.fujitsu.com> MIME-Version: 1.0 Sender: linux-btrfs-owner@vger.kernel.org List-ID: From: Wang Xiaoguang Introduce inode_need_dedup() to implement per-file online dedup control. Signed-off-by: Wang Xiaoguang --- fs/btrfs/inode.c | 15 ++++++++++++++- 1 file changed, 14 insertions(+), 1 deletion(-) diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c index 1e27a71..1973f86 100644 --- a/fs/btrfs/inode.c +++ b/fs/btrfs/inode.c @@ -676,6 +676,18 @@ static void free_async_extent_pages(struct async_extent *async_extent) async_extent->pages = NULL; } +static inline int inode_need_dedup(struct btrfs_dedup_info *dedup_info, + struct inode *inode) +{ + if (!dedup_info) + return 0; + + if (BTRFS_I(inode)->flags & BTRFS_INODE_NODEDUP) + return 0; + + return 1; +} + /* * phase two of compressed writeback. This is the ordered portion * of the code, which only gets called in the order the work was @@ -1634,7 +1646,8 @@ static int run_delalloc_range(struct inode *inode, struct page *locked_page, } else if (BTRFS_I(inode)->flags & BTRFS_INODE_PREALLOC && !force_cow) { ret = run_delalloc_nocow(inode, locked_page, start, end, page_started, 0, nr_written); - } else if (!inode_need_compress(inode) && !dedup_info) { + } else if (!inode_need_compress(inode) && + !inode_need_dedup(dedup_info, inode)) { ret = cow_file_range(inode, locked_page, start, end, page_started, nr_written, 1, NULL); } else { -- 2.7.0