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 X-Spam-Level: X-Spam-Status: No, score=0.7 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLACK,URIBL_BLOCKED autolearn=no 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 DBD93C433E0 for ; Wed, 1 Jul 2020 15:30:10 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id BB8F620760 for ; Wed, 1 Jul 2020 15:30:10 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1732116AbgGAPaJ (ORCPT ); Wed, 1 Jul 2020 11:30:09 -0400 Received: from mga02.intel.com ([134.134.136.20]:63074 "EHLO mga02.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1731999AbgGAPaJ (ORCPT ); Wed, 1 Jul 2020 11:30:09 -0400 IronPort-SDR: 9ubm55pGbFyUs6cfLcbCDI4a7kRTmEg+Khd+VlXnr2klh12OFSwt92wNl1AaryJFgd7/HPA5RZ Wi6OZr6VJDOA== X-IronPort-AV: E=McAfee;i="6000,8403,9668"; a="134886180" X-IronPort-AV: E=Sophos;i="5.75,300,1589266800"; d="scan'208";a="134886180" X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga007.jf.intel.com ([10.7.209.58]) by orsmga101.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 01 Jul 2020 08:29:51 -0700 IronPort-SDR: qii2doTNGxxQ9EAUM+l5Od+zB+Fh1ps2PvsDbF1g75+lgSHfxDfTzMGjfoLJ92LYZMmPa9Lgph 24hh9lQMI5QA== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.75,300,1589266800"; d="scan'208";a="321789364" Received: from viggo.jf.intel.com (HELO localhost.localdomain) ([10.54.77.144]) by orsmga007.jf.intel.com with ESMTP; 01 Jul 2020 08:29:51 -0700 Subject: [PATCH 0/3] [v2] Repair and clean up vm.zone_reclaim_mode sysctl ABI To: linux-kernel@vger.kernel.org Cc: linux-mm@kvack.org, Dave Hansen , ben.widawsky@intel.com, alex.shi@linux.alibaba.com, dwagner@suse.de, tobin@kernel.org, cl@linux.com, akpm@linux-foundation.org, ying.huang@intel.com, dan.j.williams@intel.com, cai@lca.pw From: Dave Hansen Date: Wed, 01 Jul 2020 08:26:21 -0700 Message-Id: <20200701152621.D520E62B@viggo.jf.intel.com> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org A previous cleanup accidentally changed the vm.zone_reclaim_mode ABI. This series restores the ABI and then reorganizes the code to make the ABI more obvious. Since the single-patch v1[1], I've: * Restored the RECLAIM_ZONE naming, comment and Documentation now that the implicit checks for it are known. * Move RECLAIM_* definitions to a uapi header * Add a node_reclaim_enabled() helper Documentation/admin-guide/sysctl/vm.rst | 10 +++++----- include/linux/swap.h | 7 +++++++ include/uapi/linux/mempolicy.h | 7 +++++++ mm/khugepaged.c | 2 +- mm/page_alloc.c | 2 +- mm/vmscan.c | 3 --- 6 files changed, 21 insertions(+), 10 deletions(-) 1. https://lore.kernel.org/linux-mm/20200626003459.D8E015CA@viggo.jf.intel.com/ Cc: Ben Widawsky Cc: Alex Shi Cc: Daniel Wagner Cc: "Tobin C. Harding" Cc: Christoph Lameter Cc: Andrew Morton Cc: Huang Ying Cc: Dan Williams Cc: Qian Cai Cc: Daniel Wagner