diff options
Diffstat (limited to 'module/zfs/zfeature.c')
| -rw-r--r-- | module/zfs/zfeature.c | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/module/zfs/zfeature.c b/module/zfs/zfeature.c index bda954829..c83b14568 100644 --- a/module/zfs/zfeature.c +++ b/module/zfs/zfeature.c @@ -380,6 +380,43 @@ feature_enable_sync(spa_t *spa, zfeature_info_t *feature, dmu_tx_t *tx) } } +/* + * This function is non-static for zhack; it should otherwise not be used + * outside this file. + */ +void +feature_disable_sync(spa_t *spa, zfeature_info_t *feature, dmu_tx_t *tx) +{ + uint64_t descobj = spa->spa_feat_desc_obj; + uint64_t zapobj = feature->fi_can_readonly ? + spa->spa_feat_for_write_obj : spa->spa_feat_for_read_obj; + + ASSERT(0 != zapobj); + ASSERT(zfeature_is_valid_guid(feature->fi_guid)); + ASSERT3U(spa_version(spa), >=, SPA_VERSION_FEATURES); + + if (zap_contains(spa->spa_meta_objset, descobj, feature->fi_guid) == 0) + VERIFY0(zap_remove(spa->spa_meta_objset, descobj, + feature->fi_guid, tx)); + + if (zap_contains(spa->spa_meta_objset, zapobj, feature->fi_guid) == 0) + VERIFY0(zap_remove(spa->spa_meta_objset, zapobj, + feature->fi_guid, tx)); + + spa_deactivate_mos_feature(spa, feature->fi_guid); + + if (spa_feature_is_enabled(spa, SPA_FEATURE_ENABLED_TXG)) { + uint64_t txgobj = spa->spa_feat_enabled_txg_obj; + + if (txgobj && (zap_contains(spa->spa_meta_objset, + txgobj, feature->fi_guid) == 0)) { + spa_feature_decr(spa, SPA_FEATURE_ENABLED_TXG, tx); + VERIFY0(zap_remove(spa->spa_meta_objset, txgobj, + feature->fi_guid, tx)); + } + } +} + static void feature_do_action(spa_t *spa, spa_feature_t fid, feature_action_t action, dmu_tx_t *tx) |