- __test_extent_overwrite(c, 32, 64, 0, 64);
- __test_extent_overwrite(c, 32, 64, 0, 128);
- __test_extent_overwrite(c, 32, 64, 32, 64);
- __test_extent_overwrite(c, 32, 64, 32, 128);
+ return __test_extent_overwrite(c, 32, 64, 0, 64) ?:
+ __test_extent_overwrite(c, 32, 64, 0, 128) ?:
+ __test_extent_overwrite(c, 32, 64, 32, 64) ?:
+ __test_extent_overwrite(c, 32, 64, 32, 128);
+}
+
+/* snapshot unit tests */
+
+/* Test skipping over keys in unrelated snapshots: */
+static int test_snapshot_filter(struct bch_fs *c, u32 snapid_lo, u32 snapid_hi)
+{
+ struct btree_trans trans;
+ struct btree_iter iter;
+ struct bkey_s_c k;
+ struct bkey_i_cookie cookie;
+ int ret;
+
+ bkey_cookie_init(&cookie.k_i);
+ cookie.k.p.snapshot = snapid_hi;
+ ret = bch2_btree_insert(c, BTREE_ID_xattrs, &cookie.k_i,
+ NULL, NULL, 0);
+ if (ret)
+ return ret;
+
+ bch2_trans_init(&trans, c, 0, 0);
+ bch2_trans_iter_init(&trans, &iter, BTREE_ID_xattrs,
+ SPOS(0, 0, snapid_lo), 0);
+ k = bch2_btree_iter_peek(&iter);
+
+ BUG_ON(k.k->p.snapshot != U32_MAX);
+
+ bch2_trans_iter_exit(&trans, &iter);
+ bch2_trans_exit(&trans);
+ return ret;
+}
+
+static int test_snapshots(struct bch_fs *c, u64 nr)
+{
+ struct bkey_i_cookie cookie;
+ u32 snapids[2];
+ u32 snapid_subvols[2] = { 1, 1 };
+ int ret;
+
+ bkey_cookie_init(&cookie.k_i);
+ cookie.k.p.snapshot = U32_MAX;
+ ret = bch2_btree_insert(c, BTREE_ID_xattrs, &cookie.k_i,
+ NULL, NULL, 0);
+ if (ret)
+ return ret;
+
+ ret = bch2_trans_do(c, NULL, NULL, 0,
+ bch2_snapshot_node_create(&trans, U32_MAX,
+ snapids,
+ snapid_subvols,
+ 2));
+ if (ret)
+ return ret;
+
+ if (snapids[0] > snapids[1])
+ swap(snapids[0], snapids[1]);
+
+ ret = test_snapshot_filter(c, snapids[0], snapids[1]);
+ if (ret) {
+ bch_err(c, "err %i from test_snapshot_filter", ret);
+ return ret;
+ }
+
+ return 0;