btrfs: use btrfs_put_fs_root to free roots always

If we are going to track leaked roots we need to free them all the same
way, so don't kfree() roots directly, use btrfs_put_fs_root.
Reviewed-by: NNikolay Borisov <nborisov@suse.com>
Signed-off-by: NJosef Bacik <josef@toxicpanda.com>
Reviewed-by: NDavid Sterba <dsterba@suse.com>
Signed-off-by: NDavid Sterba <dsterba@suse.com>

fs/btrfs/disk-io.c

@@ -1297,7 +1297,7 @@ struct btrfs_root *btrfs_create_tree(struct btrfs_trans_handle *trans,
 		free_extent_buffer(root->commit_root);
 		free_extent_buffer(leaf);
 	}
-	kfree(root);
+	btrfs_put_fs_root(root);
 
 	return ERR_PTR(ret);
 }
@@ -1328,7 +1328,7 @@ static struct btrfs_root *alloc_log_tree(struct btrfs_trans_handle *trans,
 	leaf = btrfs_alloc_tree_block(trans, root, 0, BTRFS_TREE_LOG_OBJECTID,
 			NULL, 0, 0, 0);
 	if (IS_ERR(leaf)) {
-		kfree(root);
+		btrfs_put_fs_root(root);
 		return ERR_CAST(leaf);
 	}
 
@@ -1431,7 +1431,7 @@ struct btrfs_root *btrfs_read_tree_root(struct btrfs_root *tree_root,
 	return root;
 
 find_fail:
-	kfree(root);
+	btrfs_put_fs_root(root);
 alloc_fail:
 	root = ERR_PTR(ret);
 	goto out;
@@ -1527,17 +1527,17 @@ void btrfs_free_fs_info(struct btrfs_fs_info *fs_info)
 {
 	kfree(fs_info->balance_ctl);
 	kfree(fs_info->delayed_root);
-	kfree(fs_info->extent_root);
-	kfree(fs_info->tree_root);
-	kfree(fs_info->chunk_root);
-	kfree(fs_info->dev_root);
-	kfree(fs_info->csum_root);
-	kfree(fs_info->quota_root);
-	kfree(fs_info->uuid_root);
-	kfree(fs_info->free_space_root);
+	btrfs_put_fs_root(fs_info->extent_root);
+	btrfs_put_fs_root(fs_info->tree_root);
+	btrfs_put_fs_root(fs_info->chunk_root);
+	btrfs_put_fs_root(fs_info->dev_root);
+	btrfs_put_fs_root(fs_info->csum_root);
+	btrfs_put_fs_root(fs_info->quota_root);
+	btrfs_put_fs_root(fs_info->uuid_root);
+	btrfs_put_fs_root(fs_info->free_space_root);
+	btrfs_put_fs_root(fs_info->fs_root);
 	kfree(fs_info->super_copy);
 	kfree(fs_info->super_for_commit);
-	btrfs_put_fs_root(fs_info->fs_root);
 	kvfree(fs_info);
 }
 
@@ -2223,12 +2223,12 @@ static int btrfs_replay_log(struct btrfs_fs_info *fs_info,
 	if (IS_ERR(log_tree_root->node)) {
 		btrfs_warn(fs_info, "failed to read log tree");
 		ret = PTR_ERR(log_tree_root->node);
-		kfree(log_tree_root);
+		btrfs_put_fs_root(log_tree_root);
 		return ret;
 	} else if (!extent_buffer_uptodate(log_tree_root->node)) {
 		btrfs_err(fs_info, "failed to read log tree");
 		free_extent_buffer(log_tree_root->node);
-		kfree(log_tree_root);
+		btrfs_put_fs_root(log_tree_root);
 		return -EIO;
 	}
 	/* returns with log_tree_root freed on success */
@@ -2237,7 +2237,7 @@ static int btrfs_replay_log(struct btrfs_fs_info *fs_info,
 		btrfs_handle_fs_error(fs_info, ret,
 				      "Failed to recover log tree");
 		free_extent_buffer(log_tree_root->node);
-		kfree(log_tree_root);
+		btrfs_put_fs_root(log_tree_root);
 		return ret;
 	}
 

fs/btrfs/free-space-tree.c

@@ -1253,7 +1253,7 @@ int btrfs_clear_free_space_tree(struct btrfs_fs_info *fs_info)
 
 	free_extent_buffer(free_space_root->node);
 	free_extent_buffer(free_space_root->commit_root);
-	kfree(free_space_root);
+	btrfs_put_fs_root(free_space_root);
 
 	return btrfs_commit_transaction(trans);
 

fs/btrfs/qgroup.c

@@ -1040,7 +1040,7 @@ int btrfs_quota_enable(struct btrfs_fs_info *fs_info)
 	if (ret) {
 		free_extent_buffer(quota_root->node);
 		free_extent_buffer(quota_root->commit_root);
-		kfree(quota_root);
+		btrfs_put_fs_root(quota_root);
 	}
 out:
 	if (ret) {
@@ -1106,7 +1106,7 @@ int btrfs_quota_disable(struct btrfs_fs_info *fs_info)
 
 	free_extent_buffer(quota_root->node);
 	free_extent_buffer(quota_root->commit_root);
-	kfree(quota_root);
+	btrfs_put_fs_root(quota_root);
 
 end_trans:
 	ret = btrfs_end_transaction(trans);

fs/btrfs/tests/btrfs-tests.c

@@ -227,7 +227,7 @@ void btrfs_free_dummy_root(struct btrfs_root *root)
 		/* One for allocate_extent_buffer */
 		free_extent_buffer(root->node);
 	}
-	kfree(root);
+	btrfs_put_fs_root(root);
 }
 
 struct btrfs_block_group *

fs/btrfs/tree-log.c

@@ -3289,7 +3289,7 @@ static void free_log_tree(struct btrfs_trans_handle *trans,
 	clear_extent_bits(&log->dirty_log_pages, 0, (u64)-1,
 			  EXTENT_DIRTY | EXTENT_NEW | EXTENT_NEED_WAIT);
 	free_extent_buffer(log->node);
-	kfree(log);
+	btrfs_put_fs_root(log);
 }
 
 /*
@@ -6187,7 +6187,7 @@ int btrfs_recover_log_trees(struct btrfs_root *log_root_tree)
 							log->node->len);
 			free_extent_buffer(log->node);
 			free_extent_buffer(log->commit_root);
-			kfree(log);
+			btrfs_put_fs_root(log);
 
 			if (!ret)
 				goto next;
@@ -6226,7 +6226,7 @@ int btrfs_recover_log_trees(struct btrfs_root *log_root_tree)
 		btrfs_put_fs_root(wc.replay_dest);
 		free_extent_buffer(log->node);
 		free_extent_buffer(log->commit_root);
-		kfree(log);
+		btrfs_put_fs_root(log);
 
 		if (ret)
 			goto error;
@@ -6260,7 +6260,7 @@ int btrfs_recover_log_trees(struct btrfs_root *log_root_tree)
 	free_extent_buffer(log_root_tree->node);
 	log_root_tree->log_root = NULL;
 	clear_bit(BTRFS_FS_LOG_RECOVERING, &fs_info->flags);
-	kfree(log_root_tree);
+	btrfs_put_fs_root(log_root_tree);
 
 	return 0;
 error: