Received: by 2002:a6b:500f:0:0:0:0:0 with SMTP id e15csp4934609iob; Mon, 9 May 2022 05:12:19 -0700 (PDT) X-Google-Smtp-Source: ABdhPJyYS6Pfgjk3tMff9hNR4YBK2U5aGOSYoN4n+9ZikYuuRCLVtYN40qUqAN4X6qEwYKzgFw0t X-Received: by 2002:a02:a616:0:b0:32a:ea30:d1bf with SMTP id c22-20020a02a616000000b0032aea30d1bfmr6700185jam.65.1652098339424; Mon, 09 May 2022 05:12:19 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1652098339; cv=none; d=google.com; s=arc-20160816; b=IV7YU0wPKdH9vh1fYX+iK5a9Ei98+OQLwDTLQdK+8/2ASgGbDNmoaxlTT4OB4OdhkJ /E1pf5/bR4g5TrW9OpdaTLV0cm9jJ0Nq8EE67bvBVJabGFc7eM4zEKL/zPi3/X96+aQi YDVFE/DbBDsZqUoINibRrcPnzonQtwhmjTcznmFEZRqi52nhYr8M4g6kaGrNSn8ccb7C qSll457hGRD+Zxy5mfkHnb26oDdW8444BKH/asUlY4BksWMvQZnLVyajy7QJfhpsFjk2 gP/OxKQ8IwYgY0vKdmv8+82DG5zWhYKkPpmXQJy0c83imaiT6QoeLfQP4jLbCUWvrjyh Qlxw== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:references:in-reply-to:message-id:date:subject :cc:to:from; bh=Fk755NR9h+uR+HGRyRm6bINO2p1zk60lVbHjbKPjg7I=; b=q6Kmj7LJkhWPxkJ5yx6l6VaJHxSaL5lY/VgsDp6N7knSb5ZJ+bF84AWVKmgXMN0Ho5 qjnm3UUcBUXEYGX1sX5Sq5tDkZQ7j2VThtj3yf6HSWa9vI7sFouK7T6c6CUHi5ghm3tR 0QUSilRARM/OAJdhAM5+ybdUYlpn/1FnrD1WcS1ptHuNgSYuKoAC9BagHroAJ/RzsA6K +AZButvh8IFTvqWtsG+m4fnHdIJ9wJAyeI5WlTxT6xEAzJZ3H6OPCXMw29lOaTs1555h AOYx37oYLPl0EKumxhf+B+2ZDNpDXYoG8iNBoVdFw7gREv7P3bkkZkLrKci4PPpU7yzy KR3Q== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Return-Path: Received: from lindbergh.monkeyblade.net (lindbergh.monkeyblade.net. [2620:137:e000::1:18]) by mx.google.com with ESMTPS id a1-20020a92c541000000b002cf947dbdbdsi5126325ilj.19.2022.05.09.05.12.19 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 09 May 2022 05:12:19 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:18 as permitted sender) client-ip=2620:137:e000::1:18; Authentication-Results: mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id 0989A21013C; Mon, 9 May 2022 04:39:59 -0700 (PDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233051AbiEILno (ORCPT + 99 others); Mon, 9 May 2022 07:43:44 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59190 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232592AbiEILna (ORCPT ); Mon, 9 May 2022 07:43:30 -0400 Received: from mail.nfschina.com (unknown [IPv6:2400:dd01:100f:2:72e2:84ff:fe10:5f45]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id 14E3D20F4DB for ; Mon, 9 May 2022 04:39:36 -0700 (PDT) Received: from localhost (unknown [127.0.0.1]) by mail.nfschina.com (Postfix) with ESMTP id 780EB1E80D70; Mon, 9 May 2022 19:34:27 +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 OL22kQYy3_7T; Mon, 9 May 2022 19:34:25 +0800 (CST) Received: from localhost.localdomain (unknown [219.141.250.2]) (Authenticated sender: kunyu@nfschina.com) by mail.nfschina.com (Postfix) with ESMTPA id E408D1E80D6B; Mon, 9 May 2022 19:34:24 +0800 (CST) From: Li kunyu To: peterz@infradead.org Cc: akpm@linux-foundation.org, bp@alien8.de, dave.hansen@linux.intel.com, hpa@zytor.com, kunyu@nfschina.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org, luto@kernel.org, mingo@redhat.com, tglx@linutronix.de, x86@kernel.org Subject: Re: [PATCH] mm: Functions may simplify the use of return values Date: Mon, 9 May 2022 19:39:19 +0800 Message-Id: <20220509113920.125795-1-kunyu@nfschina.com> X-Mailer: git-send-email 2.18.2 In-Reply-To: <20220509071924.GF76023@worktop.programming.kicks-ass.net> References: <20220509071924.GF76023@worktop.programming.kicks-ass.net> X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,RDNS_NONE, SPF_HELO_NONE,T_SCC_BODY_TEXT_LINE autolearn=no autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org I estimate that this function should not add code in the next year or two. I consider and optimize this function in terms of code execution efficiency. There may be a better way.