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    Subject[PATCH 4.14 05/41] btrfs: define SUPER_FLAG_METADUMP_V2
    Date
    4.14-stable review patch.  If anyone has any objections, please let me know.

    ------------------

    From: Anand Jain <Anand.Jain@oracle.com>

    commit e2731e55884f2138a252b0a3d7b24d57e49c3c59 upstream.

    btrfs-progs uses super flag bit BTRFS_SUPER_FLAG_METADUMP_V2 (1ULL << 34).
    So just define that in kernel so that we know its been used.

    Signed-off-by: Anand Jain <anand.jain@oracle.com>
    Reviewed-by: David Sterba <dsterba@suse.com>
    Signed-off-by: David Sterba <dsterba@suse.com>
    Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

    ---
    fs/btrfs/disk-io.c | 3 ++-
    include/uapi/linux/btrfs_tree.h | 1 +
    2 files changed, 3 insertions(+), 1 deletion(-)

    --- a/fs/btrfs/disk-io.c
    +++ b/fs/btrfs/disk-io.c
    @@ -59,7 +59,8 @@
    BTRFS_HEADER_FLAG_RELOC |\
    BTRFS_SUPER_FLAG_ERROR |\
    BTRFS_SUPER_FLAG_SEEDING |\
    - BTRFS_SUPER_FLAG_METADUMP)
    + BTRFS_SUPER_FLAG_METADUMP |\
    + BTRFS_SUPER_FLAG_METADUMP_V2)

    static const struct extent_io_ops btree_extent_io_ops;
    static void end_workqueue_fn(struct btrfs_work *work);
    --- a/include/uapi/linux/btrfs_tree.h
    +++ b/include/uapi/linux/btrfs_tree.h
    @@ -456,6 +456,7 @@ struct btrfs_free_space_header {

    #define BTRFS_SUPER_FLAG_SEEDING (1ULL << 32)
    #define BTRFS_SUPER_FLAG_METADUMP (1ULL << 33)
    +#define BTRFS_SUPER_FLAG_METADUMP_V2 (1ULL << 34)


    /*

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