commit: avoid parent list buildup in clear_commit_marks_many()

clear_commit_marks_1() clears the marks of the first parent and its first parent and so on, and saves the higher numbered parents in a list for later. There is no benefit in keeping that list growing with each handled commit. Clear it after each run to reduce peak memory usage. Signed-off-by: René Scharfe <l.s.r@web.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>

René Scharfe committed Feb 23, 2025 at 09:26 UTC 1ca727f230d83db20952f8ae7ce2f1749d744334
1 file changed +4 -4
commit.c
+4 -4
@@ -780,14 +780,14 @@ static void clear_commit_marks_1(struct commit_list **plist,
780
781 void clear_commit_marks_many(size_t nr, struct commit **commit, unsigned int mark)
782 {
783 - struct commit_list *list = NULL;
784 -
783 for (size_t i = 0; i < nr; i++) {
784 + struct commit_list *list = NULL;
785 +
786 clear_commit_marks_1(&list, *commit, mark);
787 + while (list)
788 + clear_commit_marks_1(&list, pop_commit(&list), mark);
789 commit++;
790 }
789 - while (list)
790 - clear_commit_marks_1(&list, pop_commit(&list), mark);
791 }
792
793 void clear_commit_marks(struct commit *commit, unsigned int mark)