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4171 clean up spa_feature_*() interfaces
4172 implement extensible_dataset feature for use by other zpool features
Reviewed by: Max Grossman <max.grossman@delphix.com>
Reviewed by: Christopher Siden <christopher.siden@delphix.com>
Reviewed by: George Wilson <george.wilson@delphix.com>


 233                 }
 234                 dsl_dir_rele(dd, dp);
 235                 if (err)
 236                         goto out;
 237         }
 238 
 239         if (spa_version(dp->dp_spa) >= SPA_VERSION_DEADLISTS) {
 240                 err = dsl_pool_open_special_dir(dp, FREE_DIR_NAME,
 241                     &dp->dp_free_dir);
 242                 if (err)
 243                         goto out;
 244 
 245                 err = zap_lookup(dp->dp_meta_objset, DMU_POOL_DIRECTORY_OBJECT,
 246                     DMU_POOL_FREE_BPOBJ, sizeof (uint64_t), 1, &obj);
 247                 if (err)
 248                         goto out;
 249                 VERIFY0(bpobj_open(&dp->dp_free_bpobj,
 250                     dp->dp_meta_objset, obj));
 251         }
 252 
 253         if (spa_feature_is_active(dp->dp_spa,
 254             &spa_feature_table[SPA_FEATURE_ASYNC_DESTROY])) {
 255                 err = zap_lookup(dp->dp_meta_objset, DMU_POOL_DIRECTORY_OBJECT,
 256                     DMU_POOL_BPTREE_OBJ, sizeof (uint64_t), 1,
 257                     &dp->dp_bptree_obj);
 258                 if (err != 0)
 259                         goto out;
 260         }
 261 
 262         if (spa_feature_is_active(dp->dp_spa,
 263             &spa_feature_table[SPA_FEATURE_EMPTY_BPOBJ])) {
 264                 err = zap_lookup(dp->dp_meta_objset, DMU_POOL_DIRECTORY_OBJECT,
 265                     DMU_POOL_EMPTY_BPOBJ, sizeof (uint64_t), 1,
 266                     &dp->dp_empty_bpobj);
 267                 if (err != 0)
 268                         goto out;
 269         }
 270 
 271         err = zap_lookup(dp->dp_meta_objset, DMU_POOL_DIRECTORY_OBJECT,
 272             DMU_POOL_TMP_USERREFS, sizeof (uint64_t), 1,
 273             &dp->dp_tmp_userrefs_obj);
 274         if (err == ENOENT)
 275                 err = 0;
 276         if (err)
 277                 goto out;
 278 
 279         err = dsl_scan_init(dp, dp->dp_tx.tx_open_txg);
 280 
 281 out:
 282         rrw_exit(&dp->dp_config_rwlock, FTAG);
 283         return (err);




 233                 }
 234                 dsl_dir_rele(dd, dp);
 235                 if (err)
 236                         goto out;
 237         }
 238 
 239         if (spa_version(dp->dp_spa) >= SPA_VERSION_DEADLISTS) {
 240                 err = dsl_pool_open_special_dir(dp, FREE_DIR_NAME,
 241                     &dp->dp_free_dir);
 242                 if (err)
 243                         goto out;
 244 
 245                 err = zap_lookup(dp->dp_meta_objset, DMU_POOL_DIRECTORY_OBJECT,
 246                     DMU_POOL_FREE_BPOBJ, sizeof (uint64_t), 1, &obj);
 247                 if (err)
 248                         goto out;
 249                 VERIFY0(bpobj_open(&dp->dp_free_bpobj,
 250                     dp->dp_meta_objset, obj));
 251         }
 252 
 253         if (spa_feature_is_active(dp->dp_spa, SPA_FEATURE_ASYNC_DESTROY)) {

 254                 err = zap_lookup(dp->dp_meta_objset, DMU_POOL_DIRECTORY_OBJECT,
 255                     DMU_POOL_BPTREE_OBJ, sizeof (uint64_t), 1,
 256                     &dp->dp_bptree_obj);
 257                 if (err != 0)
 258                         goto out;
 259         }
 260 
 261         if (spa_feature_is_active(dp->dp_spa, SPA_FEATURE_EMPTY_BPOBJ)) {

 262                 err = zap_lookup(dp->dp_meta_objset, DMU_POOL_DIRECTORY_OBJECT,
 263                     DMU_POOL_EMPTY_BPOBJ, sizeof (uint64_t), 1,
 264                     &dp->dp_empty_bpobj);
 265                 if (err != 0)
 266                         goto out;
 267         }
 268 
 269         err = zap_lookup(dp->dp_meta_objset, DMU_POOL_DIRECTORY_OBJECT,
 270             DMU_POOL_TMP_USERREFS, sizeof (uint64_t), 1,
 271             &dp->dp_tmp_userrefs_obj);
 272         if (err == ENOENT)
 273                 err = 0;
 274         if (err)
 275                 goto out;
 276 
 277         err = dsl_scan_init(dp, dp->dp_tx.tx_open_txg);
 278 
 279 out:
 280         rrw_exit(&dp->dp_config_rwlock, FTAG);
 281         return (err);