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=-6.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE, SPF_PASS,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 CACD5C4363D for ; Tue, 6 Oct 2020 20:51:25 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 84A662087E for ; Tue, 6 Oct 2020 20:51:25 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727403AbgJFUvY (ORCPT ); Tue, 6 Oct 2020 16:51:24 -0400 Received: from mga04.intel.com ([192.55.52.120]:39969 "EHLO mga04.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727350AbgJFUvN (ORCPT ); Tue, 6 Oct 2020 16:51:13 -0400 IronPort-SDR: N884+lHk2JEfLHKg6wgSBDRUoK7l4TycV0nzHSoN0cnyrFm8V1jhhr4zmNRVH/QC5gOwOHArgi hnQNpKQvIb+A== X-IronPort-AV: E=McAfee;i="6000,8403,9766"; a="162068067" X-IronPort-AV: E=Sophos;i="5.77,343,1596524400"; d="scan'208";a="162068067" X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga005.fm.intel.com ([10.253.24.32]) by fmsmga104.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 06 Oct 2020 13:51:13 -0700 IronPort-SDR: sq+R0Aiu9u4TGvm7w4h4XTyWHaLAr9kcg7G0h4/qxUjWJ8R+pbtAUpKJdCpCe+2FCL93K1hlap UXxdrHznKJBg== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.77,343,1596524400"; d="scan'208";a="518474613" Received: from viggo.jf.intel.com (HELO localhost.localdomain) ([10.54.77.144]) by fmsmga005.fm.intel.com with ESMTP; 06 Oct 2020 13:51:12 -0700 Subject: [RFC][PATCH 02/12] mm/vmscan: move RECLAIM* bits to uapi header To: linux-kernel@vger.kernel.org Cc: Dave Hansen , ben.widawsky@intel.com, rientjes@google.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: Tue, 06 Oct 2020 13:51:08 -0700 References: <20201006205103.268F74A9@viggo.jf.intel.com> In-Reply-To: <20201006205103.268F74A9@viggo.jf.intel.com> Message-Id: <20201006205108.ADF7B6F2@viggo.jf.intel.com> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Dave Hansen It is currently not obvious that the RECLAIM_* bits are part of the uapi since they are defined in vmscan.c. Move them to a uapi header to make it obvious. This should have no functional impact. Signed-off-by: Dave Hansen Reviewed-by: Ben Widawsky Acked-by: David Rientjes 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 -- Note: This is not cc'd to stable. It does not fix any bugs. --- b/include/uapi/linux/mempolicy.h | 7 +++++++ b/mm/vmscan.c | 8 -------- 2 files changed, 7 insertions(+), 8 deletions(-) diff -puN include/uapi/linux/mempolicy.h~mm-vmscan-move-RECLAIM-bits-to-uapi include/uapi/linux/mempolicy.h --- a/include/uapi/linux/mempolicy.h~mm-vmscan-move-RECLAIM-bits-to-uapi 2020-10-06 13:39:21.720818440 -0700 +++ b/include/uapi/linux/mempolicy.h 2020-10-06 13:39:21.726818440 -0700 @@ -62,5 +62,12 @@ enum { #define MPOL_F_MOF (1 << 3) /* this policy wants migrate on fault */ #define MPOL_F_MORON (1 << 4) /* Migrate On protnone Reference On Node */ +/* + * These bit locations are exposed in the vm.zone_reclaim_mode sysctl + * ABI. New bits are OK, but existing bits can never change. + */ +#define RECLAIM_ZONE (1<<0) /* Run shrink_inactive_list on the zone */ +#define RECLAIM_WRITE (1<<1) /* Writeout pages during reclaim */ +#define RECLAIM_UNMAP (1<<2) /* Unmap pages during reclaim */ #endif /* _UAPI_LINUX_MEMPOLICY_H */ diff -puN mm/vmscan.c~mm-vmscan-move-RECLAIM-bits-to-uapi mm/vmscan.c --- a/mm/vmscan.c~mm-vmscan-move-RECLAIM-bits-to-uapi 2020-10-06 13:39:21.722818440 -0700 +++ b/mm/vmscan.c 2020-10-06 13:39:21.727818440 -0700 @@ -4084,14 +4084,6 @@ module_init(kswapd_init) int node_reclaim_mode __read_mostly; /* - * These bit locations are exposed in the vm.zone_reclaim_mode sysctl - * ABI. New bits are OK, but existing bits can never change. - */ -#define RECLAIM_ZONE (1<<0) /* Run shrink_inactive_list on the zone */ -#define RECLAIM_WRITE (1<<1) /* Writeout pages during reclaim */ -#define RECLAIM_UNMAP (1<<2) /* Unmap pages during reclaim */ - -/* * Priority for NODE_RECLAIM. This determines the fraction of pages * of a node considered for each zone_reclaim. 4 scans 1/16th of * a zone. _