crimson/os/cache: get_extent_viewable_by_trans, the extent should be valid

Signed-off-by: Yingxin Cheng <yingxin.cheng@intel.com>
(cherry picked from commit 06cf024341284cad62100920958ade131a970902)

diff --git a/src/crimson/os/seastore/cache.h b/src/crimson/os/seastore/cache.h
index 082241d408fa4a4ab0ab1bf0c7260217d9c6d07e..28471bbcd7ea3cb968d3060077c1c67286aaed45 100644 (file)
--- a/src/crimson/os/seastore/cache.h
+++ b/src/crimson/os/seastore/cache.h
@@ -449,6 +449,7 @@ public:
     Transaction &t,
     CachedExtentRef extent)
   {
+    assert(extent->is_valid());
     auto p_extent = extent->get_transactional_view(t);
     if (!p_extent->is_pending_in_trans(t.get_trans_id())) {
       t.add_to_read_set(p_extent);