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From: Qu Wenruo <quwenruo@cn.fujitsu.com>
To: <linux-btrfs@vger.kernel.org>
Cc: Wang Xiaoguang <wangxg.fnst@cn.fujitsu.com>
Subject: [PATCH v4 18/18] btrfs: dedup: add per-file online dedup control
Date: Thu, 14 Jan 2016 13:57:34 +0800	[thread overview]
Message-ID: <1452751054-2365-19-git-send-email-quwenruo@cn.fujitsu.com> (raw)
In-Reply-To: <1452751054-2365-1-git-send-email-quwenruo@cn.fujitsu.com>

From: Wang Xiaoguang <wangxg.fnst@cn.fujitsu.com>

Introduce inode_need_dedup() to implement per-file online dedup control.

Signed-off-by: Wang Xiaoguang <wangxg.fnst@cn.fujitsu.com>
---
 fs/btrfs/inode.c | 19 ++++++++++++++++---
 1 file changed, 16 insertions(+), 3 deletions(-)

diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index 5a49afa..6d2f068 100644
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -672,6 +672,21 @@ static void free_async_extent_pages(struct async_extent *async_extent)
 	async_extent->pages = NULL;
 }
 
+static inline int inode_need_dedup(struct inode *inode)
+{
+	struct btrfs_root *root = BTRFS_I(inode)->root;
+	struct btrfs_dedup_info *dedup_info = root->fs_info->dedup_info;
+
+	if (!dedup_info)
+		return 0;
+
+	if (BTRFS_I(inode)->flags & BTRFS_INODE_NODEDUP)
+		return 0;
+
+	return 1;
+}
+
+
 static int submit_dedup_extent(struct inode *inode, u64 start,
 			       unsigned long len, u64 disk_start, int dedup)
 {
@@ -1794,8 +1809,6 @@ static int run_delalloc_range(struct inode *inode, struct page *locked_page,
 {
 	int ret;
 	int force_cow = need_force_cow(inode, start, end);
-	struct btrfs_root *root = BTRFS_I(inode)->root;
-	struct btrfs_dedup_info *dedup_info = root->fs_info->dedup_info;
 
 	if (BTRFS_I(inode)->flags & BTRFS_INODE_NODATACOW && !force_cow) {
 		ret = run_delalloc_nocow(inode, locked_page, start, end,
@@ -1803,7 +1816,7 @@ 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(inode)) {
 		ret = cow_file_range(inode, locked_page, start, end,
 				      page_started, nr_written, 1);
 	} else {
-- 
2.7.0




      parent reply	other threads:[~2016-01-14  6:00 UTC|newest]

Thread overview: 35+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-01-14  5:57 [PATCH v4 00/14][For 4.6] Btrfs: Add inband (write time) de-duplication framework Qu Wenruo
2016-01-14  5:57 ` [PATCH v4 01/18] btrfs: dedup: Introduce dedup framework and its header Qu Wenruo
2016-01-14  5:57 ` [PATCH v4 02/18] btrfs: dedup: Introduce function to initialize dedup info Qu Wenruo
2016-01-14 21:33   ` kbuild test robot
2016-01-14  5:57 ` [PATCH v4 03/18] btrfs: dedup: Introduce function to add hash into in-memory tree Qu Wenruo
2016-01-14  5:57 ` [PATCH v4 04/18] btrfs: dedup: Introduce function to remove hash from " Qu Wenruo
2016-01-14  5:57 ` [PATCH v4 05/18] btrfs: delayed-ref: Add support for atomic increasing extent ref Qu Wenruo
2016-01-14  9:56   ` Filipe Manana
2016-01-15  1:16     ` Qu Wenruo
2016-01-20  3:25       ` Qu Wenruo
2016-01-14  5:57 ` [PATCH v4 06/18] btrfs: dedup: Introduce function to search for an existing hash Qu Wenruo
2016-01-14  5:57 ` [PATCH v4 07/18] btrfs: dedup: Implement btrfs_dedup_calc_hash interface Qu Wenruo
2016-01-14 10:08   ` Filipe Manana
2016-01-15  1:41     ` Qu Wenruo
2016-01-14  5:57 ` [PATCH v4 08/18] btrfs: ordered-extent: Add support for dedup Qu Wenruo
2016-01-14  5:57 ` [PATCH v4 09/18] btrfs: dedup: Inband in-memory only de-duplication implement Qu Wenruo
2016-01-14  5:57 ` [PATCH v4 10/18] btrfs: dedup: Add basic tree structure for on-disk dedup method Qu Wenruo
2016-01-14  5:57 ` [PATCH v4 11/18] btrfs: dedup: Introduce interfaces to resume and cleanup dedup info Qu Wenruo
2016-01-14  5:57 ` [PATCH v4 12/18] btrfs: dedup: Add support for on-disk hash search Qu Wenruo
2016-01-14  5:57 ` [PATCH v4 13/18] btrfs: dedup: Add support to delete hash for on-disk backend Qu Wenruo
2016-01-14 10:19   ` Filipe Manana
2016-01-15  1:43     ` Qu Wenruo
2016-01-14  5:57 ` [PATCH v4 14/18] btrfs: dedup: Add support for adding " Qu Wenruo
2016-01-14  5:57 ` [PATCH v4 15/18] btrfs: dedup: Add ioctl for inband deduplication Qu Wenruo
2016-01-14  5:57 ` [PATCH v4 16/18] btrfs: dedup: add an inode nodedup flag Qu Wenruo
2016-01-14  5:57 ` [PATCH v4 17/18] btrfs: dedup: add a property handler for online dedup Qu Wenruo
2016-01-14  9:56   ` Filipe Manana
2016-01-14 19:04     ` Darrick J. Wong
2016-01-15  1:37     ` Qu Wenruo
2016-01-15  9:19       ` Filipe Manana
2016-01-15  9:33         ` Qu Wenruo
2016-01-15 12:36         ` Duncan
2016-01-15 15:22           ` Filipe Manana
2016-01-16  2:53             ` Duncan
2016-01-14  5:57 ` Qu Wenruo [this message]

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