MNT_LOCK_READONLY
flags |= MNT_LOCK_READONLY;
if ((fl & MNT_LOCK_READONLY) &&
mnt_flags |= MNT_LOCK_READONLY;
if ((mnt_flags & MNT_LOCK_READONLY) &&
*new_mnt_flags |= mnt_flags & (MNT_LOCK_READONLY | \