IN_HASHED
KKASSERT((ip->i_flag & IN_HASHED) == 0);
ip->i_flag |= IN_HASHED;
if (ip->i_flag & IN_HASHED) {
ip->i_flag &= ~IN_HASHED;
ip->i_flag |= IN_HASHED;
if (ip->i_flag & IN_HASHED) {
ip->i_flag &= ~IN_HASHED;
KKASSERT((ip->i_flag & IN_HASHED) == 0);
ip->i_flag |= IN_HASHED;
if (ip->i_flag & IN_HASHED) {
ip->i_flag &= ~IN_HASHED;
if (flag & IN_HASHED)