diff --git a/fs/btrfs/tree-log.c b/fs/btrfs/tree-log.c
index 9ab05ebd8854d927d36586538ecf4f96b1e3dc1d..6ea7df1beee20113e7a1ef372ab62e0bf86f55b4 100644
--- a/fs/btrfs/tree-log.c
+++ b/fs/btrfs/tree-log.c
@@ -4415,14 +4415,12 @@ static int btrfs_log_changed_extents(struct btrfs_trans_handle *trans,
 	struct extent_map *em, *n;
 	struct list_head extents;
 	struct extent_map_tree *tree = &inode->extent_tree;
-	u64 test_gen;
 	int ret = 0;
 	int num = 0;
 
 	INIT_LIST_HEAD(&extents);
 
 	write_lock(&tree->lock);
-	test_gen = root->fs_info->last_trans_committed;
 
 	list_for_each_entry_safe(em, n, &tree->modified_extents, list) {
 		list_del_init(&em->list);
@@ -4438,7 +4436,7 @@ static int btrfs_log_changed_extents(struct btrfs_trans_handle *trans,
 			goto process;
 		}
 
-		if (em->generation <= test_gen)
+		if (em->generation < trans->transid)
 			continue;
 
 		/* We log prealloc extents beyond eof later. */