xfs: XFS_TRANS_SWAPEXT is not a valid flag for xfs_trans_commit

XFS_TRANS_SWAPEXT is a transaction type, not a flag for xfs_trans_commit, so
don't pass it in xfs_swap_extents.
Signed-off-by: NChristoph Hellwig <hch@lst.de>
Signed-off-by: NAlex Elder <aelder@sgi.com>

fs/xfs/xfs_dfrag.c

@@ -438,7 +438,7 @@ xfs_swap_extents(
 	if (mp->m_flags & XFS_MOUNT_WSYNC)
 		xfs_trans_set_sync(tp);
 
-	error = xfs_trans_commit(tp, XFS_TRANS_SWAPEXT);
+	error = xfs_trans_commit(tp, 0);
 
 	trace_xfs_swap_extent_after(ip, 0);
 	trace_xfs_swap_extent_after(tip, 1);