MC_JOURNAL_WWAIT
if (jo->flags & MC_JOURNAL_WWAIT) {
jo->flags &= ~MC_JOURNAL_WWAIT; /* XXX hysteresis */
if (jo->flags & MC_JOURNAL_WWAIT) {
jo->flags &= ~MC_JOURNAL_WWAIT; /* XXX hysteresis */
if (jo->flags & MC_JOURNAL_WWAIT) {
jo->flags &= ~MC_JOURNAL_WWAIT; /* XXX hysteresis */
if ((avail < (jo->fifo.size >> 1)) || (jo->flags & MC_JOURNAL_WWAIT))
jo->flags |= MC_JOURNAL_WWAIT;