@matheusbsbs / matheus-bagliano / commits / 521731213c

cache-tree: fix inverted object existence check in cache_tree_fully_valid

The negation in front of the object existence check in cache_tree_fully_valid() was lost in 062b914c84 (treewide: convert users of `repo_has_object_file()` to `has_object()`, 2025-04-29), turning `!repo_has_object_file(...)` into `has_object(...)` instead of `!has_object(...)`. This makes cache_tree_fully_valid() always report the cache tree as invalid when objects exist (the common case), forcing callers like write_index_as_tree() to call cache_tree_update() on every invocation. An odb_has_object() check inside update_one() avoids a full tree rebuild, but the unnecessary call still pays the cost of opening an ODB transaction and, in partial clones, a promisor remote check. Restore the missing negation and add a test that verifies write-tree takes the cache-tree shortcut when the cache tree is valid. Helped-by: Derrick Stolee <stolee@gmail.com> Signed-off-by: David Lin <davidlin@stripe.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>

David Lin committed Apr 6, 2026 at 15:27 UTC 521731213c905f0dfec6a55393f010d185492c85
2 files changed +9 -1
cache-tree.c
+1 -1
index 66ef2becbe..366b1d7dcd 100644 --- a/cache-tree.c +++ b/cache-tree.c @@ -239,7 +239,7 @@ int cache_tree_fully_valid(struct cache_tree *it) if (!it) return 0; if (it->entry_count < 0 || - odb_has_object(the_repository->objects, &it->oid, + !odb_has_object(the_repository->objects, &it->oid, HAS_OBJECT_RECHECK_PACKED | HAS_OBJECT_FETCH_PROMISOR)) return 0; for (i = 0; i < it->subtree_nr; i++) {
t/t0090-cache-tree.sh
+8
index d901588294..0964718d7f 100755 --- a/t/t0090-cache-tree.sh +++ b/t/t0090-cache-tree.sh @@ -278,4 +278,12 @@ test_expect_success 'switching trees does not invalidate shared index' ' ) ' +test_expect_success 'cache-tree is used by write-tree when valid' ' + test_commit use-valid && + + # write-tree with a valid cache-tree should skip cache_tree_update + GIT_TRACE2_PERF="$(pwd)/trace.output" git write-tree && + test_grep ! region_enter.*cache_tree.*update trace.output +' + test_done