On Tue, Nov 06, 2018 at 02:41:10PM +0800, Lu Fengqi wrote:
> From: Wang Xiaoguang <wangxg.fnst@xxxxxxxxxxxxxx>
>
> Introduce the header for btrfs in-band(write time) de-duplication
> framework and needed header.
>
> The new de-duplication framework is going to support 2 different dedupe
> methods and 1 dedupe hash.
>
> Signed-off-by: Qu Wenruo <quwenruo@xxxxxxxxxxxxxx>
> Signed-off-by: Wang Xiaoguang <wangxg.fnst@xxxxxxxxxxxxxx>
> Signed-off-by: Lu Fengqi <lufq.fnst@xxxxxxxxxxxxxx>
> ---
> fs/btrfs/ctree.h | 7 ++
> fs/btrfs/dedupe.h | 128 ++++++++++++++++++++++++++++++++++++-
> fs/btrfs/disk-io.c | 1 +
> include/uapi/linux/btrfs.h | 34 ++++++++++
> 4 files changed, 168 insertions(+), 2 deletions(-)
>
> diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h
> index 80953528572d..910050d904ef 100644
> --- a/fs/btrfs/ctree.h
> +++ b/fs/btrfs/ctree.h
> @@ -1118,6 +1118,13 @@ struct btrfs_fs_info {
> spinlock_t ref_verify_lock;
> struct rb_root block_tree;
> #endif
> +
> + /*
> + * Inband de-duplication related structures
> + */
> + unsigned long dedupe_enabled:1;
Please use a BTRFS_FS_ flag for this. Thanks,
Josef
