Btrfs: fix memory leak in start_transaction()

yoshinorisano · chrismason-xx · commit 6e8df2ae89ab · 2011-04-05T01:19:43.000-04:00
Free btrfs_trans_handle when join_transaction() fails
in start_transaction()

Signed-off-by: Yoshinori Sano &lt;yoshinori.sano@gmail.com&gt;
Signed-off-by: Chris Mason &lt;chris.mason@oracle.com&gt;
diff --git a/fs/btrfs/transaction.c b/fs/btrfs/transaction.c
@@ -197,6 +197,7 @@ static struct btrfs_trans_handle *start_transaction(struct btrfs_root *root,
 
 	ret = join_transaction(root);
 	if (ret < 0) {
+		kmem_cache_free(btrfs_trans_handle_cachep, h);
 		if (type != TRANS_JOIN_NOLOCK)
 			mutex_unlock(&root->fs_info->trans_mutex);
 		return ERR_PTR(ret);
