Btrfs: fix memory leak in btrfs_ioctl_start_sync()

Call btrfs_end_transaction() if btrfs_commit_transaction_async() fails.

Signed-off-by: Tsutomu Itoh <t-itoh@jp.fujitsu.com>
Signed-off-by: Chris Mason <chris.mason@oracle.com>

1 files changed, 3 insertions, 1 deletions

diff --git a/fs/btrfs/ioctl.c b/fs/btrfs/ioctl.c
index 6b70e0e2bd1e..255c7c5279c4 100644
--- a/fs/btrfs/ioctl.c
+++ b/fs/btrfs/ioctl.c
@@ -2436,8 +2436,10 @@ static noinline long btrfs_ioctl_start_sync(struct file *file, void __user *argp
                 return PTR_ERR(trans);
         transid = trans->transid;
         ret = btrfs_commit_transaction_async(trans, root, 0);
-        if (ret)
+        if (ret) {
+                btrfs_end_transaction(trans, root);
                 return ret;
+        }
 
         if (argp)
                 if (copy_to_user(argp, &transid, sizeof(transid)))