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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 v6 16/19] btrfs: dedup: add an inode nodedup flag
Date: Fri,  5 Feb 2016 09:22:36 +0800	[thread overview]
Message-ID: <1454635359-10013-17-git-send-email-quwenruo@cn.fujitsu.com> (raw)
In-Reply-To: <1454635359-10013-1-git-send-email-quwenruo@cn.fujitsu.com>

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

Introduce BTRFS_INODE_NODEDUP flag, then we can explicitly disable
online data deduplication for specified files.

Signed-off-by: Wang Xiaoguang <wangxg.fnst@cn.fujitsu.com>
---
 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 8c04920..bd68b97 100644
--- a/fs/btrfs/ctree.h
+++ b/fs/btrfs/ctree.h
@@ -2401,6 +2401,7 @@ do {                                                                   \
 #define BTRFS_INODE_NOATIME		(1 << 9)
 #define BTRFS_INODE_DIRSYNC		(1 << 10)
 #define BTRFS_INODE_COMPRESS		(1 << 11)
+#define BTRFS_INODE_NODEDUP		(1 << 12)
 
 #define BTRFS_INODE_ROOT_ITEM_INIT	(1 << 31)
 
diff --git a/fs/btrfs/ioctl.c b/fs/btrfs/ioctl.c
index 2bd1a97..0dab40c 100644
--- a/fs/btrfs/ioctl.c
+++ b/fs/btrfs/ioctl.c
@@ -159,7 +159,8 @@ 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, the dedup flags and the cow
+ * flags are inherited.
  */
 void btrfs_inherit_iflags(struct inode *inode, struct inode *dir)
 {
@@ -184,6 +185,9 @@ void btrfs_inherit_iflags(struct inode *inode, struct inode *dir)
 			BTRFS_I(inode)->flags |= BTRFS_INODE_NODATASUM;
 	}
 
+	if (flags & BTRFS_INODE_NODEDUP)
+		BTRFS_I(inode)->flags |= BTRFS_INODE_NODEDUP;
+
 	btrfs_update_iflags(inode);
 }
 
-- 
2.7.0




  parent reply	other threads:[~2016-02-05  1:24 UTC|newest]

Thread overview: 20+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-02-05  1:22 [PATCH v6 00/19][For 4.6] Btrfs: Add inband (write time) de-duplication framework Qu Wenruo
2016-02-05  1:22 ` [PATCH v6 01/19] btrfs: dedup: Introduce dedup framework and its header Qu Wenruo
2016-02-05  1:22 ` [PATCH v6 02/19] btrfs: dedup: Introduce function to initialize dedup info Qu Wenruo
2016-02-05  1:22 ` [PATCH v6 03/19] btrfs: dedup: Introduce function to add hash into in-memory tree Qu Wenruo
2016-02-05  1:22 ` [PATCH v6 04/19] btrfs: dedup: Introduce function to remove hash from " Qu Wenruo
2016-02-05  1:22 ` [PATCH v6 05/19] btrfs: delayed-ref: Add support for increasing data ref under spinlock Qu Wenruo
2016-02-05  1:22 ` [PATCH v6 06/19] btrfs: dedup: Introduce function to search for an existing hash Qu Wenruo
2016-02-05  1:22 ` [PATCH v6 07/19] btrfs: dedup: Implement btrfs_dedup_calc_hash interface Qu Wenruo
2016-02-05  1:22 ` [PATCH v6 08/19] btrfs: ordered-extent: Add support for dedup Qu Wenruo
2016-02-05  1:22 ` [PATCH v6 09/19] btrfs: dedup: Inband in-memory only de-duplication implement Qu Wenruo
2016-02-05  1:22 ` [PATCH v6 10/19] btrfs: dedup: Add basic tree structure for on-disk dedup method Qu Wenruo
2016-02-05  1:22 ` [PATCH v6 11/19] btrfs: dedup: Introduce interfaces to resume and cleanup dedup info Qu Wenruo
2016-02-05  1:22 ` [PATCH v6 12/19] btrfs: dedup: Add support for on-disk hash search Qu Wenruo
2016-02-05  1:22 ` [PATCH v6 13/19] btrfs: dedup: Add support to delete hash for on-disk backend Qu Wenruo
2016-02-05  1:22 ` [PATCH v6 14/19] btrfs: dedup: Add support for adding " Qu Wenruo
2016-02-05  1:22 ` [PATCH v6 15/19] btrfs: dedup: Add ioctl for inband deduplication Qu Wenruo
2016-02-05  1:22 ` Qu Wenruo [this message]
2016-02-05  1:22 ` [PATCH v6 17/19] btrfs: dedup: add a property handler for online dedup Qu Wenruo
2016-02-05  1:22 ` [PATCH v6 18/19] btrfs: dedup: add per-file online dedup control Qu Wenruo
2016-02-05  1:22 ` [PATCH v6 19/19] btrfs: try more times to alloc metadata reserve space Qu Wenruo

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