From: Wang Xiaoguang <wangxg.f...@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.f...@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 -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html