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 B127EC7618E for ; Sat, 22 Apr 2023 10:16:08 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229748AbjDVKQH (ORCPT ); Sat, 22 Apr 2023 06:16:07 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:44246 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229957AbjDVKPl (ORCPT ); Sat, 22 Apr 2023 06:15:41 -0400 Received: from out30-100.freemail.mail.aliyun.com (out30-100.freemail.mail.aliyun.com [115.124.30.100]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 0409E26B5 for ; Sat, 22 Apr 2023 03:15:31 -0700 (PDT) X-Alimail-AntiSpam: AC=PASS;BC=-1|-1;BR=01201311R121e4;CH=green;DM=||false|;DS=||;FP=0|-1|-1|-1|0|-1|-1|-1;HT=ay29a033018045170;MF=baolin.wang@linux.alibaba.com;NM=1;PH=DS;RN=9;SR=0;TI=SMTPD_---0VgfnVJl_1682158527; Received: from localhost(mailfrom:baolin.wang@linux.alibaba.com fp:SMTPD_---0VgfnVJl_1682158527) by smtp.aliyun-inc.com; Sat, 22 Apr 2023 18:15:28 +0800 From: Baolin Wang To: akpm@linux-foundation.org Cc: ying.huang@intel.com, mgorman@techsingularity.net, vbabka@suse.cz, mhocko@suse.com, david@redhat.com, baolin.wang@linux.alibaba.com, linux-mm@kvack.org, linux-kernel@vger.kernel.org Subject: [PATCH 1/2] mm/page_alloc: drop the unnecessary pfn_valid() for start pfn Date: Sat, 22 Apr 2023 18:15:17 +0800 Message-Id: X-Mailer: git-send-email 2.27.0 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org We've already used pfn_to_online_page() for start pfn to make sure it is online and valid, so the pfn_valid() for the start pfn is unnecessary, drop it. Signed-off-by: Baolin Wang --- mm/page_alloc.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/mm/page_alloc.c b/mm/page_alloc.c index 9de2a18519a1..6457b64fe562 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -1512,7 +1512,7 @@ struct page *__pageblock_pfn_to_page(unsigned long start_pfn, /* end_pfn is one past the range we are checking */ end_pfn--; - if (!pfn_valid(start_pfn) || !pfn_valid(end_pfn)) + if (!pfn_valid(end_pfn)) return NULL; start_page = pfn_to_online_page(start_pfn); -- 2.27.0