releases/4.9.108/btrfs-define-super_flag_metadump_v2.patch

   1 From e2731e55884f2138a252b0a3d7b24d57e49c3c59 Mon Sep 17 00:00:00 2001
   2 From: Anand Jain <Anand.Jain@oracle.com>
   3 Date: Tue, 9 Jan 2018 09:05:41 +0800
   4 Subject: btrfs: define SUPER_FLAG_METADUMP_V2
   5
   6 From: Anand Jain <Anand.Jain@oracle.com>
   7
   8 commit e2731e55884f2138a252b0a3d7b24d57e49c3c59 upstream.
   9
  10 btrfs-progs uses super flag bit BTRFS_SUPER_FLAG_METADUMP_V2 (1ULL << 34).
  11 So just define that in kernel so that we know its been used.
  12
  13 Signed-off-by: Anand Jain <anand.jain@oracle.com>
  14 Reviewed-by: David Sterba <dsterba@suse.com>
  15 Signed-off-by: David Sterba <dsterba@suse.com>
  16 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
  17
  18 ---
  19  fs/btrfs/disk-io.c              |    3 ++-
  20  include/uapi/linux/btrfs_tree.h |    1 +
  21  2 files changed, 3 insertions(+), 1 deletion(-)
  22
  23 --- a/fs/btrfs/disk-io.c
  24 +++ b/fs/btrfs/disk-io.c
  25 @@ -59,7 +59,8 @@
  26                                  BTRFS_HEADER_FLAG_RELOC |\
  27                                  BTRFS_SUPER_FLAG_ERROR |\
  28                                  BTRFS_SUPER_FLAG_SEEDING |\
  29 -                                BTRFS_SUPER_FLAG_METADUMP)
  30 +                                BTRFS_SUPER_FLAG_METADUMP |\
  31 +                                BTRFS_SUPER_FLAG_METADUMP_V2)
  32
  33  static const struct extent_io_ops btree_extent_io_ops;
  34  static void end_workqueue_fn(struct btrfs_work *work);
  35 --- a/include/uapi/linux/btrfs_tree.h
  36 +++ b/include/uapi/linux/btrfs_tree.h
  37 @@ -452,6 +452,7 @@ struct btrfs_free_space_header {
  38
  39  #define BTRFS_SUPER_FLAG_SEEDING       (1ULL << 32)
  40  #define BTRFS_SUPER_FLAG_METADUMP      (1ULL << 33)
  41 +#define BTRFS_SUPER_FLAG_METADUMP_V2   (1ULL << 34)
  42
  43
  44  /*