1#val_type uint64_t
2BTRFS_FEATURE_INCOMPAT_MIXED_BACKREF    (1ULL << 0)
3BTRFS_FEATURE_INCOMPAT_DEFAULT_SUBVOL   (1ULL << 1)
4BTRFS_FEATURE_INCOMPAT_MIXED_GROUPS     (1ULL << 2)
5BTRFS_FEATURE_INCOMPAT_COMPRESS_LZO     (1ULL << 3)
6BTRFS_FEATURE_INCOMPAT_COMPRESS_LZOv2   (1ULL << 4)
7BTRFS_FEATURE_INCOMPAT_BIG_METADATA     (1ULL << 5)
8BTRFS_FEATURE_INCOMPAT_EXTENDED_IREF    (1ULL << 6)
9BTRFS_FEATURE_INCOMPAT_RAID56           (1ULL << 7)
10BTRFS_FEATURE_INCOMPAT_SKINNY_METADATA  (1ULL << 8)
11BTRFS_FEATURE_INCOMPAT_NO_HOLES         (1ULL << 9)
12