ISYNC
{ "SYNC", ISYNC, ISYNC },
issync = ((ip->i_flag & ISYNC) != 0);
ip->i_flag |= ISYNC;
if ((ip->i_flag & ISYNC) != 0) {
ip->i_flag &= ~(INOACC | ISYNC);
issync = ((ip->i_flag & ISYNC) != 0);
if (!rewrite && (ip->i_flag & ISYNC)) {
if ((ip->i_flag & ISYNC) != 0) {
ip->i_flag &= ~(INOACC | ISYNC);
ip->i_flag |= ISYNC;