MT_MATAMAP
if (ul->un_debug & MT_MATAMAP)
ASSERT(((ul->un_debug & (MT_TRANSACT|MT_MATAMAP)) == 0) ||
ASSERT(((ul->un_debug & (MT_TRANSACT|MT_MATAMAP)) == 0) ||
(ufsvfsp->vfs_log->un_debug & MT_MATAMAP))