From patchwork Thu Jul 1 01:50:48 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Andrew Morton X-Patchwork-Id: 12353195 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-15.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_RED autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id BE8FFC11F68 for ; Thu, 1 Jul 2021 01:50:50 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 8F82861241 for ; Thu, 1 Jul 2021 01:50:50 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 8F82861241 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=linux-foundation.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id 185AF8D0218; Wed, 30 Jun 2021 21:50:50 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 135CA8D0202; Wed, 30 Jun 2021 21:50:50 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id F18658D0218; Wed, 30 Jun 2021 21:50:49 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0235.hostedemail.com [216.40.44.235]) by kanga.kvack.org (Postfix) with ESMTP id CF0638D0202 for ; Wed, 30 Jun 2021 21:50:49 -0400 (EDT) Received: from smtpin21.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay01.hostedemail.com (Postfix) with ESMTP id A95151802B4D3 for ; Thu, 1 Jul 2021 01:50:49 +0000 (UTC) X-FDA: 78312340218.21.CC20310 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by imf03.hostedemail.com (Postfix) with ESMTP id 67D4330000A6 for ; Thu, 1 Jul 2021 01:50:49 +0000 (UTC) Received: by mail.kernel.org (Postfix) with ESMTPSA id 8852E6105A; Thu, 1 Jul 2021 01:50:48 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linux-foundation.org; s=korg; t=1625104248; bh=z3Z39tCLifEa5QUv67IYFRRwi8ywQ7lTDjexKpXSuhM=; h=Date:From:To:Subject:In-Reply-To:From; b=Spri/IJKJju+xA3f+ZNv/LzXi3EMBrOeyaelOw+ZV4s7+APWri7VkZt63e/o44faJ v0DSB04/IF0XgZkZi/JcaA8dnXZ/+U0P2Z91+ctGA3xz1yQxBKW5xc5OTB8K1k0fxC 3KnIxdpRPf7YbM7VNV7dtr/h0AgwL4P3mZSD2EfQ= Date: Wed, 30 Jun 2021 18:50:48 -0700 From: Andrew Morton To: akpm@linux-foundation.org, linux-mm@kvack.org, mm-commits@vger.kernel.org, torvalds@linux-foundation.org, yuehaibing@huawei.com Subject: [patch 068/192] mm/compaction: use DEVICE_ATTR_WO macro Message-ID: <20210701015048.s99_O6WH0%akpm@linux-foundation.org> In-Reply-To: <20210630184624.9ca1937310b0dd5ce66b30e7@linux-foundation.org> User-Agent: s-nail v14.8.16 X-Rspamd-Server: rspam05 X-Rspamd-Queue-Id: 67D4330000A6 X-Stat-Signature: 1jtbnrk3arc1zf9uxcrnm5jysdtwkyhd Authentication-Results: imf03.hostedemail.com; dkim=pass header.d=linux-foundation.org header.s=korg header.b="Spri/IJK"; dmarc=none; spf=pass (imf03.hostedemail.com: domain of akpm@linux-foundation.org designates 198.145.29.99 as permitted sender) smtp.mailfrom=akpm@linux-foundation.org X-HE-Tag: 1625104249-626239 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: From: YueHaibing Subject: mm/compaction: use DEVICE_ATTR_WO macro Use DEVICE_ATTR_WO helper instead of plain DEVICE_ATTR, which makes the code a bit shorter and easier to read. Link: https://lkml.kernel.org/r/20210523064521.32912-1-yuehaibing@huawei.com Signed-off-by: YueHaibing Reviewed-by: Andrew Morton Signed-off-by: Andrew Morton --- mm/compaction.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) --- a/mm/compaction.c~mm-compaction-use-device_attr_wo-macro +++ a/mm/compaction.c @@ -2722,9 +2722,9 @@ int sysctl_compaction_handler(struct ctl } #if defined(CONFIG_SYSFS) && defined(CONFIG_NUMA) -static ssize_t sysfs_compact_node(struct device *dev, - struct device_attribute *attr, - const char *buf, size_t count) +static ssize_t compact_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) { int nid = dev->id; @@ -2737,7 +2737,7 @@ static ssize_t sysfs_compact_node(struct return count; } -static DEVICE_ATTR(compact, 0200, NULL, sysfs_compact_node); +static DEVICE_ATTR_WO(compact); int compaction_register_node(struct node *node) {