Illumos #3122 zfs destroy filesystem should prefetch blocks

[zfs.git] / module / zfs / bptree.c

diff --git a/module/zfs/bptree.c b/module/zfs/bptree.c
index db0a2d3..1a009cf 100644 (file)
--- a/module/zfs/bptree.c
+++ b/module/zfs/bptree.c
@@ -189,7 +189,8 @@ bptree_iterate(objset_t *os, uint64_t obj, boolean_t free, bptree_itor_t func,
                        break;
 
                err = traverse_dataset_destroyed(os->os_spa, &bte.be_bp,
-                   bte.be_birth_txg, &bte.be_zb, TRAVERSE_POST,
+                   bte.be_birth_txg, &bte.be_zb,
+                   TRAVERSE_PREFETCH_METADATA | TRAVERSE_POST,
                    bptree_visit_cb, &ba);
                if (free) {
                        ASSERT(err == 0 || err == ERESTART);