diff --git a/fs/btrfs/tree-log.c b/fs/btrfs/tree-log.c
index 6c8297bcfeb7..188e6f79ab4e 100644
--- a/fs/btrfs/tree-log.c
+++ b/fs/btrfs/tree-log.c
@@ -188,10 +188,6 @@ static int join_running_log_trans(struct btrfs_root *root)
 {
 	int ret = -ENOENT;
 
-	smp_mb();
-	if (!root->log_root)
-		return -ENOENT;
-
 	mutex_lock(&root->log_mutex);
 	if (root->log_root) {
 		ret = 0;