diff --git a/module/zfs/dbuf.c b/module/zfs/dbuf.c index a07fe1733586..03c97941d6d3 100644 --- a/module/zfs/dbuf.c +++ b/module/zfs/dbuf.c @@ -1919,7 +1919,6 @@ dbuf_unoverride(dbuf_dirty_record_t *dr) dmu_buf_impl_t *db = dr->dr_dbuf; blkptr_t *bp = &dr->dt.dl.dr_overridden_by; uint64_t txg = dr->dr_txg; - boolean_t release; ASSERT(MUTEX_HELD(&db->db_mtx)); /* @@ -1940,7 +1939,10 @@ dbuf_unoverride(dbuf_dirty_record_t *dr) if (!BP_IS_HOLE(bp) && !dr->dt.dl.dr_nopwrite) zio_free(db->db_objset->os_spa, txg, bp); - release = !dr->dt.dl.dr_brtwrite; + if (dr->dt.dl.dr_brtwrite) { + ASSERT0P(dr->dt.dl.dr_data); + dr->dt.dl.dr_data = db->db_buf; + } dr->dt.dl.dr_override_state = DR_NOT_OVERRIDDEN; dr->dt.dl.dr_nopwrite = B_FALSE; dr->dt.dl.dr_brtwrite = B_FALSE; @@ -1954,7 +1956,7 @@ dbuf_unoverride(dbuf_dirty_record_t *dr) * the buf thawed to save the effort of freezing & * immediately re-thawing it. */ - if (release) + if (dr->dt.dl.dr_data) arc_release(dr->dt.dl.dr_data, db); }