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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 v5 18/19] btrfs: dedup: add per-file online dedup control
Date: Tue,  2 Feb 2016 11:05:50 +0800	[thread overview]
Message-ID: <1454382351-31775-19-git-send-email-quwenruo@cn.fujitsu.com> (raw)
In-Reply-To: <1454382351-31775-1-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 | 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




  parent reply	other threads:[~2016-02-02  3:07 UTC|newest]

Thread overview: 20+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-02-02  3:05 [PATCH v5 00/19][For 4.6] Btrfs: Add inband (write time) de-duplication framework Qu Wenruo
2016-02-02  3:05 ` [PATCH v5 01/19] btrfs: dedup: Introduce dedup framework and its header Qu Wenruo
2016-02-02  3:05 ` [PATCH v5 02/19] btrfs: dedup: Introduce function to initialize dedup info Qu Wenruo
2016-02-02  3:05 ` [PATCH v5 03/19] btrfs: dedup: Introduce function to add hash into in-memory tree Qu Wenruo
2016-02-02  3:05 ` [PATCH v5 04/19] btrfs: dedup: Introduce function to remove hash from " Qu Wenruo
2016-02-02  3:05 ` [PATCH v5 05/19] btrfs: delayed-ref: Add support for increasing data ref under spinlock Qu Wenruo
2016-02-02  3:05 ` [PATCH v5 06/19] btrfs: dedup: Introduce function to search for an existing hash Qu Wenruo
2016-02-02  3:05 ` [PATCH v5 07/19] btrfs: dedup: Implement btrfs_dedup_calc_hash interface Qu Wenruo
2016-02-02  3:05 ` [PATCH v5 08/19] btrfs: ordered-extent: Add support for dedup Qu Wenruo
2016-02-02  3:05 ` [PATCH v5 09/19] btrfs: dedup: Inband in-memory only de-duplication implement Qu Wenruo
2016-02-02  3:05 ` [PATCH v5 10/19] btrfs: dedup: Add basic tree structure for on-disk dedup method Qu Wenruo
2016-02-02  3:05 ` [PATCH v5 11/19] btrfs: dedup: Introduce interfaces to resume and cleanup dedup info Qu Wenruo
2016-02-02  3:05 ` [PATCH v5 12/19] btrfs: dedup: Add support for on-disk hash search Qu Wenruo
2016-02-02  3:05 ` [PATCH v5 13/19] btrfs: dedup: Add support to delete hash for on-disk backend Qu Wenruo
2016-02-02  3:05 ` [PATCH v5 14/19] btrfs: dedup: Add support for adding " Qu Wenruo
2016-02-02  3:05 ` [PATCH v5 15/19] btrfs: dedup: Add ioctl for inband deduplication Qu Wenruo
2016-02-02  3:05 ` [PATCH v5 16/19] btrfs: dedup: add an inode nodedup flag Qu Wenruo
2016-02-02  3:05 ` [PATCH v5 17/19] btrfs: dedup: add a property handler for online dedup Qu Wenruo
2016-02-02  3:05 ` Qu Wenruo [this message]
2016-02-02  3:05 ` [PATCH v5 19/19] btrfs: try more times to alloc metadata reserve space Qu Wenruo

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