metaslab_class_throttle_reserve
boolean_t metaslab_class_throttle_reserve(metaslab_class_t *, int, int,
VERIFY(metaslab_class_throttle_reserve(mc, gbh_copies - copies,
VERIFY(metaslab_class_throttle_reserve(mc,
if (!metaslab_class_throttle_reserve(zio->io_metaslab_class,
VERIFY(metaslab_class_throttle_reserve(mc,