From patchwork Wed Jul 1 15:26:24 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dave Hansen X-Patchwork-Id: 11636709 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 2AD6F60D for ; Wed, 1 Jul 2020 15:30:14 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id EC2B320760 for ; Wed, 1 Jul 2020 15:30:13 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org EC2B320760 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=linux.intel.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id 3B22B8D0049; Wed, 1 Jul 2020 11:30:13 -0400 (EDT) Delivered-To: linux-mm-outgoing@kvack.org Received: by kanga.kvack.org (Postfix, from userid 40) id 3638C8D0047; Wed, 1 Jul 2020 11:30:13 -0400 (EDT) X-Original-To: int-list-linux-mm@kvack.org X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 251E88D0049; Wed, 1 Jul 2020 11:30:13 -0400 (EDT) X-Original-To: linux-mm@kvack.org X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0187.hostedemail.com [216.40.44.187]) by kanga.kvack.org (Postfix) with ESMTP id 0FEB48D0047 for ; Wed, 1 Jul 2020 11:30:13 -0400 (EDT) Received: from smtpin28.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay03.hostedemail.com (Postfix) with ESMTP id C3458824805A for ; Wed, 1 Jul 2020 15:30:12 +0000 (UTC) X-FDA: 76989893064.28.hill12_0b1441226e81 Received: from filter.hostedemail.com (10.5.16.251.rfc1918.com [10.5.16.251]) by smtpin28.hostedemail.com (Postfix) with ESMTP id A165A6C2C for ; Wed, 1 Jul 2020 15:30:12 +0000 (UTC) X-Spam-Summary: 1,0,0,,d41d8cd98f00b204,dave.hansen@linux.intel.com,,RULES_HIT:30054:30064:30070,0,RBL:134.134.136.20:@linux.intel.com:.lbl8.mailshell.net-62.18.0.100 64.95.201.95;04yrf84to4zcjbh6e1h33uyd3ja5rycbg637twkf9y5zmycij774nnfyygshgju.wu4tdfz1d9w1pp55cjrf79wsdueykdqoeozccun3i58fa3okf7e69hemui9si1w.g-lbl8.mailshell.net-223.238.255.100,CacheIP:none,Bayesian:0.5,0.5,0.5,Netcheck:none,DomainCache:0,MSF:not bulk,SPF:fn,MSBL:0,DNSBL:none,Custom_rules:0:0:0,LFtime:26,LUA_SUMMARY:none X-HE-Tag: hill12_0b1441226e81 X-Filterd-Recvd-Size: 4256 Received: from mga02.intel.com (mga02.intel.com [134.134.136.20]) by imf33.hostedemail.com (Postfix) with ESMTP for ; Wed, 1 Jul 2020 15:30:11 +0000 (UTC) IronPort-SDR: P1SPs7LQEZk902+mfq5XUxgnIGd4uiROU/E26S48oQAuA4oBBEv9rIb8/YIDTQP+mvO6eMYDpJ uSTNtK+2YKPw== X-IronPort-AV: E=McAfee;i="6000,8403,9668"; a="134886195" X-IronPort-AV: E=Sophos;i="5.75,300,1589266800"; d="scan'208";a="134886195" X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga007.fm.intel.com ([10.253.24.52]) by orsmga101.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 01 Jul 2020 08:29:56 -0700 IronPort-SDR: ggTlTifZFGv2OXKF8Yqlnk+bQPFK3lXCuGnnGc9WyrL8+1SsPTKRvgsqtjtRoV9O6ePQ1ZObg1 UJRIopRh8r7g== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.75,300,1589266800"; d="scan'208";a="265439405" Received: from viggo.jf.intel.com (HELO localhost.localdomain) ([10.54.77.144]) by fmsmga007.fm.intel.com with ESMTP; 01 Jul 2020 08:29:55 -0700 Subject: [PATCH 2/3] mm/vmscan: move RECLAIM* bits to uapi header 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 08:26:24 -0700 References: <20200701152621.D520E62B@viggo.jf.intel.com> In-Reply-To: <20200701152621.D520E62B@viggo.jf.intel.com> Message-Id: <20200701152624.D6FBDDA8@viggo.jf.intel.com> X-Rspamd-Queue-Id: A165A6C2C X-Spamd-Result: default: False [0.00 / 100.00] X-Rspamd-Server: rspam02 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: 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 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 Acked-by: David Rientjes --- 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 2020-07-01 08:22:12.502955333 -0700 +++ b/include/uapi/linux/mempolicy.h 2020-07-01 08:22:12.508955333 -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 2020-07-01 08:22:12.504955333 -0700 +++ b/mm/vmscan.c 2020-07-01 08:22:12.509955333 -0700 @@ -4091,14 +4091,6 @@ 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.