1 files changed, 2 insertions, 0 deletions

diff --git a/fs/btrfs/transaction.c b/fs/btrfs/transaction.c
index 614903f5c884..a3205808ab2b 100644
--- a/fs/btrfs/transaction.c
+++ b/fs/btrfs/transaction.c
@@ -699,7 +699,9 @@ int btrfs_commit_transaction(struct btrfs_trans_handle *trans,
         BUG_ON(ret);
 
         cur_trans = root->fs_info->running_transaction;
+        spin_lock(&root->fs_info->new_trans_lock);
         root->fs_info->running_transaction = NULL;
+        spin_unlock(&root->fs_info->new_trans_lock);
         btrfs_set_super_generation(&root->fs_info->super_copy,
                                    cur_trans->transid);
         btrfs_set_super_root(&root->fs_info->super_copy,