From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on dcvr.yhbt.net X-Spam-Level: X-Spam-ASN: AS31976 209.132.180.0/23 X-Spam-Status: No, score=-3.9 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,RCVD_IN_DNSWL_HI, SPF_HELO_NONE,SPF_NONE shortcircuit=no autolearn=ham autolearn_force=no version=3.4.2 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by dcvr.yhbt.net (Postfix) with ESMTP id 9BE391F461 for ; Mon, 26 Aug 2019 02:43:39 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729154AbfHZCni (ORCPT ); Sun, 25 Aug 2019 22:43:38 -0400 Received: from dcvr.yhbt.net ([64.71.152.64]:36276 "EHLO dcvr.yhbt.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726932AbfHZCni (ORCPT ); Sun, 25 Aug 2019 22:43:38 -0400 Received: from localhost (dcvr.yhbt.net [127.0.0.1]) by dcvr.yhbt.net (Postfix) with ESMTP id C27A41F4B9; Mon, 26 Aug 2019 02:43:32 +0000 (UTC) From: Eric Wong To: Junio C Hamano Cc: git@vger.kernel.org Subject: [PATCH 02/11] packfile: use hashmap_entry in delta_base_cache_entry Date: Mon, 26 Aug 2019 02:43:23 +0000 Message-Id: <20190826024332.3403-3-e@80x24.org> In-Reply-To: <20190826024332.3403-1-e@80x24.org> References: <20190826024332.3403-1-e@80x24.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: git-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: git@vger.kernel.org This hashmap_entry_init function is intended to take a hashmap_entry struct pointer, not a hashmap struct pointer. This was not noticed because hashmap_entry_init takes a "void *" arg instead of "struct hashmap_entry *", and the hashmap struct is larger and can be cast into a hashmap_entry struct without data corruption. This has the beneficial side effect of reducing the size of a delta_base_cache_entry from 104 bytes to 72 bytes on 64-bit systems. Signed-off-by: Eric Wong --- packfile.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/packfile.c b/packfile.c index fc43a6c52c..37fe0b73a6 100644 --- a/packfile.c +++ b/packfile.c @@ -1361,7 +1361,7 @@ struct delta_base_cache_key { }; struct delta_base_cache_entry { - struct hashmap hash; + struct hashmap_entry ent; struct delta_base_cache_key key; struct list_head lru; void *data; -- EW