From patchwork Wed Aug 3 06:41:18 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Li kunyu X-Patchwork-Id: 12935225 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 kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by smtp.lore.kernel.org (Postfix) with ESMTP id C7C94C19F28 for ; Wed, 3 Aug 2022 06:41:34 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 186246B0071; Wed, 3 Aug 2022 02:41:34 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 1371A8E0001; Wed, 3 Aug 2022 02:41:34 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 0250F6B0073; Wed, 3 Aug 2022 02:41:33 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0014.hostedemail.com [216.40.44.14]) by kanga.kvack.org (Postfix) with ESMTP id E84906B0071 for ; Wed, 3 Aug 2022 02:41:33 -0400 (EDT) Received: from smtpin18.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay08.hostedemail.com (Postfix) with ESMTP id 97BBE141457 for ; Wed, 3 Aug 2022 06:41:33 +0000 (UTC) X-FDA: 79757335266.18.A554F35 Received: from mail.nfschina.com (unknown [124.16.136.209]) by imf12.hostedemail.com (Postfix) with ESMTP id 98F7040018 for ; Wed, 3 Aug 2022 06:41:31 +0000 (UTC) Received: from localhost (unknown [127.0.0.1]) by mail.nfschina.com (Postfix) with ESMTP id A0B491E80D25; Wed, 3 Aug 2022 14:40:37 +0800 (CST) X-Virus-Scanned: amavisd-new at test.com Received: from mail.nfschina.com ([127.0.0.1]) by localhost (mail.nfschina.com [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id cWoKKGcMRh8W; Wed, 3 Aug 2022 14:40:35 +0800 (CST) Received: from localhost.localdomain (unknown [219.141.250.2]) (Authenticated sender: kunyu@nfschina.com) by mail.nfschina.com (Postfix) with ESMTPA id 039B71E80CEA; Wed, 3 Aug 2022 14:40:35 +0800 (CST) From: Li kunyu To: akpm@linux-foundation.org, linux-mm@kvack.org Cc: linux-kernel@vger.kernel.org, Li kunyu Subject: [PATCH] page_alloc: remove inactive initialization Date: Wed, 3 Aug 2022 14:41:18 +0800 Message-Id: <20220803064118.3664-1-kunyu@nfschina.com> X-Mailer: git-send-email 2.18.2 ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1659508893; a=rsa-sha256; cv=none; b=S3/J2NR/roaRpI2Yy160w5iwoAW0LpWcb73TfqYR8yLTLHAg8pJnVzbW5JYbKV7ofGbC5J 5IFYAtuMn0IPU3um+gk/kCfEV7PTOhUoG9oMgHay9bUy7PofyEU6rAf5/3HkPGl6dTVTGG +7+lHCaiPaVo0H9gYmh5qbGUfy+HNB4= ARC-Authentication-Results: i=1; imf12.hostedemail.com; dkim=none; dmarc=none; spf=none (imf12.hostedemail.com: domain of kunyu@nfschina.com has no SPF policy when checking 124.16.136.209) smtp.mailfrom=kunyu@nfschina.com ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1659508893; h=from:from:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:content-type: content-transfer-encoding:in-reply-to:references; bh=Q9PMItJ033bgeIr64BXsB45rIfhT1dvuW74hA2u3H3Y=; b=Ew7SPC6BS3xfQl7F+N2BKFSX4Agcdp9xz+16V2sfeaULuIkpvUalssQdcMWURL+34tD8TK +CB9uj81h4t7deJSoO7k8tUYWTzptDAlUHvhzOI4v8bUS6jvBWDFZnqziFMd9d7qVo6hHb OtIDxrw49uQVengONyhas+6p38s/zoA= X-Rspam-User: X-Stat-Signature: 5ms1x4g6iwg5swdkk6x6z8rm8kz7up7w X-Rspamd-Queue-Id: 98F7040018 Authentication-Results: imf12.hostedemail.com; dkim=none; dmarc=none; spf=none (imf12.hostedemail.com: domain of kunyu@nfschina.com has no SPF policy when checking 124.16.136.209) smtp.mailfrom=kunyu@nfschina.com X-Rspamd-Server: rspam02 X-HE-Tag: 1659508891-905016 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: The allocation address of the table pointer variable is first performed in the function, no initialization assignment is required, and no invalid pointer will appear. Signed-off-by: Li kunyu --- 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 b0bcab50f0a3..38d559e8aee6 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -8885,7 +8885,7 @@ void *__init alloc_large_system_hash(const char *tablename, { unsigned long long max = high_limit; unsigned long log2qty, size; - void *table = NULL; + void *table; gfp_t gfp_flags; bool virt; bool huge;