Btrfs: free all recorded tree blocks on error

We've missed the 'free blocks' part on ENOMEM error.

Signed-off-by: Liu Bo <bo.li.liu@oracle.com>
Signed-off-by: Josef Bacik <jbacik@fusionio.com>

diff --git a/fs/btrfs/relocation.c b/fs/btrfs/relocation.c
index 0f001c14eaf4498797a190958da1a90251b9fe46..7d1654cf9d485c873fa547b3819c9060b6e4795f 100644 (file)
--- a/fs/btrfs/relocation.c
+++ b/fs/btrfs/relocation.c
@@ -2848,8 +2848,10 @@ int relocate_tree_blocks(struct btrfs_trans_handle *trans,
        int err = 0;
 
        path = btrfs_alloc_path();
-       if (!path)
-               return -ENOMEM;
+       if (!path) {
+               err = -ENOMEM;
+               goto out_path;
+       }
 
        rb_node = rb_first(blocks);
        while (rb_node) {
@@ -2888,10 +2890,11 @@ int relocate_tree_blocks(struct btrfs_trans_handle *trans,
                rb_node = rb_next(rb_node);
        }
 out:
-       free_block_list(blocks);
        err = finish_pending_nodes(trans, rc, path, err);
 
        btrfs_free_path(path);
+out_path:
+       free_block_list(blocks);
        return err;
 }