Btrfs: add balance progress reporting

Signed-off-by: Ilya Dryomov <idryomov@gmail.com>

1 files changed, 3 insertions, 0 deletions

diff --git a/fs/btrfs/volumes.h b/fs/btrfs/volumes.h
index caa9abd218ef..6faec9dd1f93 100644
--- a/fs/btrfs/volumes.h
+++ b/fs/btrfs/volumes.h
@@ -218,6 +218,7 @@ struct map_lookup {
 #define BTRFS_BALANCE_ARGS_SOFT         (1ULL << 9)
 
 struct btrfs_balance_args;
+struct btrfs_balance_progress;
 struct btrfs_balance_control {
         struct btrfs_fs_info *fs_info;
 
@@ -226,6 +227,8 @@ struct btrfs_balance_control {
         struct btrfs_balance_args sys;
 
         u64 flags;
+
+        struct btrfs_balance_progress stat;
 };
 
 int btrfs_account_dev_extents_size(struct btrfs_device *device, u64 start,