void dsl_pool_config_enter(dsl_pool_t *dp, void *tag);
void dsl_pool_config_exit(dsl_pool_t *dp, void *tag);
boolean_t dsl_pool_config_held(dsl_pool_t *dp);
+boolean_t dsl_pool_config_held_writer(dsl_pool_t *dp);
taskq_t *dsl_pool_iput_taskq(dsl_pool_t *dp);