diff --git a/fs/btrfs/tree-log.c b/fs/btrfs/tree-log.c
index 79f05bc9d6ec7f8606a7fd11083652f11a529b74..7870bdba26b7451e7fc7cb77e490dbd58d412aa7 100644
--- a/fs/btrfs/tree-log.c
+++ b/fs/btrfs/tree-log.c
@@ -2448,8 +2448,8 @@ static void wait_for_writer(struct btrfs_trans_handle *trans,
 		mutex_unlock(&root->log_mutex);
 		if (atomic_read(&root->log_writers))
 			schedule();
-		mutex_lock(&root->log_mutex);
 		finish_wait(&root->log_writer_wait, &wait);
+		mutex_lock(&root->log_mutex);
 	}
 }