1 files changed, 1 insertions, 0 deletions

diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c
index 0e294cfaa60c..6290cf41d647 100644
--- a/fs/btrfs/extent-tree.c
+++ b/fs/btrfs/extent-tree.c
@@ -2650,6 +2650,7 @@ int btrfs_drop_snapshot(struct btrfs_trans_handle *trans, struct btrfs_root
                 }
         }
         while(1) {
+                atomic_inc(&root->fs_info->throttle_gen);
                 wret = walk_down_tree(trans, root, path, &level);
                 if (wret > 0)
                         break;