From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 4009EC433EF for ; Mon, 18 Apr 2022 15:14:31 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S243227AbiDRPRI (ORCPT ); Mon, 18 Apr 2022 11:17:08 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:54500 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S243332AbiDRPPm (ORCPT ); Mon, 18 Apr 2022 11:15:42 -0400 Received: from szxga08-in.huawei.com (szxga08-in.huawei.com [45.249.212.255]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 4A256B918D for ; Mon, 18 Apr 2022 07:12:31 -0700 (PDT) Received: from canpemm500002.china.huawei.com (unknown [172.30.72.56]) by szxga08-in.huawei.com (SkyGuard) with ESMTP id 4KhplQ1Dpwz1GCSG; Mon, 18 Apr 2022 22:11:46 +0800 (CST) Received: from huawei.com (10.175.124.27) by canpemm500002.china.huawei.com (7.192.104.244) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2375.24; Mon, 18 Apr 2022 22:12:28 +0800 From: Miaohe Lin To: CC: , , , , , Subject: [PATCH 03/12] mm: compaction: remove unneeded assignment to isolate_start_pfn Date: Mon, 18 Apr 2022 22:12:44 +0800 Message-ID: <20220418141253.24298-4-linmiaohe@huawei.com> X-Mailer: git-send-email 2.23.0 In-Reply-To: <20220418141253.24298-1-linmiaohe@huawei.com> References: <20220418141253.24298-1-linmiaohe@huawei.com> MIME-Version: 1.0 Content-Transfer-Encoding: 7BIT Content-Type: text/plain; charset=US-ASCII X-Originating-IP: [10.175.124.27] X-ClientProxiedBy: dggems703-chm.china.huawei.com (10.3.19.180) To canpemm500002.china.huawei.com (7.192.104.244) X-CFilter-Loop: Reflected Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org isolate_start_pfn is unused when cc->nr_freepages ! = 0. Otherwise cc->free_pfn will overwrite it unconditionally. So we should remove this unneeded and somewhat misleading assignment. Signed-off-by: Miaohe Lin --- mm/compaction.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/mm/compaction.c b/mm/compaction.c index f9e628a5306a..ee2ddf77191f 100644 --- a/mm/compaction.c +++ b/mm/compaction.c @@ -1586,7 +1586,7 @@ static void isolate_freepages(struct compact_control *cc) unsigned int stride; /* Try a small search of the free lists for a candidate */ - isolate_start_pfn = fast_isolate_freepages(cc); + fast_isolate_freepages(cc); if (cc->nr_freepages) goto splitmap; -- 2.23.0