ud_syncip
(void) ud_syncip(ip, B_FREE | B_ASYNC, 0);
(void) ud_syncip(ip, B_INVAL, I_SYNC);
if (ud_syncip(ip, B_INVAL, I_SYNC) != 0) {
(void) ud_syncip(ip, B_ASYNC, I_SYNC);
(void) ud_syncip(rip, B_INVAL, I_SYNC);
error = ud_syncip(ip, 0, I_SYNC); /* Do synchronous writes */
int32_t ud_syncip(struct ud_inode *, int32_t, int32_t);