spa_feature_incr
spa_feature_incr(spa, SPA_FEATURE_EMPTY_BPOBJ, tx);
spa_feature_incr(dmu_objset_spa(mos),
spa_feature_incr(dp->dp_spa, SPA_FEATURE_BOOKMARKS, tx);
spa_feature_incr(dp->dp_spa,
spa_feature_incr(spa, SPA_FEATURE_OBSOLETE_COUNTS, tx);
spa_feature_incr(spa, f, tx);
spa_feature_incr(dp->dp_spa, SPA_FEATURE_ASYNC_DESTROY,
spa_feature_incr(spa, SPA_FEATURE_FS_SS_LIMIT, tx);
spa_feature_incr(dp->dp_spa, SPA_FEATURE_OBSOLETE_COUNTS, tx);
spa_feature_incr(spa, SPA_FEATURE_RESILVER_DEFER, tx);
spa_feature_incr(spa, SPA_FEATURE_LZ4_COMPRESS, tx);
spa_feature_incr(spa, SPA_FEATURE_POOL_CHECKPOINT, tx);
spa_feature_incr(spa, SPA_FEATURE_LOG_SPACEMAP, tx);
spa_feature_incr(spa, SPA_FEATURE_ALLOCATION_CLASSES, tx);
spa_feature_incr(spa, SPA_FEATURE_SPACEMAP_HISTOGRAM, tx);
extern void spa_feature_incr(struct spa *, spa_feature_t, struct dmu_tx *);
spa_feature_incr(spa, SPA_FEATURE_OBSOLETE_COUNTS, tx);
spa_feature_incr(os->os_spa, SPA_FEATURE_OBSOLETE_COUNTS, tx);
spa_feature_incr(spa, SPA_FEATURE_DEVICE_REMOVAL, tx);
spa_feature_incr(spa, SPA_FEATURE_OBSOLETE_COUNTS, tx);
spa_feature_incr(spa, SPA_FEATURE_ENABLED_TXG, tx);
spa_feature_incr(spa, *featurep, tx);
spa_feature_incr(spa, SPA_FEATURE_MULTI_VDEV_CRASH_DUMP, tx);