TDBF_PFSYNC
KASSERT(ISSET(tdb->tdb_flags, TDBF_PFSYNC));
CLR(tdb->tdb_flags, TDBF_PFSYNC);
KASSERT(ISSET(tdb->tdb_flags, TDBF_PFSYNC));
CLR(tdb->tdb_flags, TDBF_PFSYNC);
if (!ISSET(tdb->tdb_flags, TDBF_PFSYNC)) {
SET(tdb->tdb_flags, TDBF_PFSYNC);
if (ISSET(tdb->tdb_flags, TDBF_PFSYNC)) {
CLR(tdb->tdb_flags, TDBF_PFSYNC);
while (ISSET(tdb->tdb_flags, TDBF_PFSYNC)) {