reftable/stack: update stats on failed full compaction

When auto-compaction fails due to a locking error, we update the
statistics to indicate this failure. We're not doing the same when
performing a full compaction.

Fix this inconsistency by using `stack_compact_range_stats()`, which
handles the stat update for us.

Signed-off-by: Patrick Steinhardt <[email protected]>
Signed-off-by: Junio C Hamano <[email protected]>

Author: pks-t

reftable/stack.c

@@ -1205,13 +1205,6 @@ static int stack_compact_range(struct reftable_stack *st,
 	return err;
 }
 
-int reftable_stack_compact_all(struct reftable_stack *st,
-			       struct reftable_log_expiry_config *config)
-{
-	return stack_compact_range(st, 0, st->merged->stack_len ?
-			st->merged->stack_len - 1 : 0, config);
-}
-
 static int stack_compact_range_stats(struct reftable_stack *st,
 				     size_t first, size_t last,
 				     struct reftable_log_expiry_config *config)
@@ -1222,6 +1215,13 @@ static int stack_compact_range_stats(struct reftable_stack *st,
 	return err;
 }
 
+int reftable_stack_compact_all(struct reftable_stack *st,
+			       struct reftable_log_expiry_config *config)
+{
+	size_t last = st->merged->stack_len ? st->merged->stack_len - 1 : 0;
+	return stack_compact_range_stats(st, 0, last, config);
+}
+
 static int segment_size(struct segment *s)
 {
 	return s->end - s->start;

reftable/stack_test.c

@@ -1005,8 +1005,7 @@ static void test_reftable_stack_compaction_with_locked_tables(void)
 	 */
 	err = reftable_stack_compact_all(st, NULL);
 	EXPECT(err == REFTABLE_LOCK_ERROR);
-	/* TODO: this is wrong, we should get notified about the failure. */
-	EXPECT(st->stats.failures == 0);
+	EXPECT(st->stats.failures == 1);
 	EXPECT(st->merged->stack_len == 3);
 
 	reftable_stack_destroy(st);