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Mon, 1 Feb 2021 17:49:47 +0000 (UTC) IronPort-SDR: lTh+6hZD2Fc9yawsOjZ4jjeJVlwpQNu9D37Z12XZ7Vm6fPrYOaYrmCDbSJvvC7ZfJDGDKjr+17 nZPZZUYkf8fg== X-IronPort-AV: E=McAfee;i="6000,8403,9882"; a="160491090" X-IronPort-AV: E=Sophos;i="5.79,393,1602572400"; d="scan'208";a="160491090" Received: from fmsmga008.fm.intel.com ([10.253.24.58]) by fmsmga107.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 01 Feb 2021 09:49:45 -0800 IronPort-SDR: 8YmBipzXoXTDoBbyReckFLT7Dmq3QPPh5nYa4LbOYEZMOOwbxPK8uwRvS13KvGO7ChHItT8oan JCh9pdvh+iUA== X-IronPort-AV: E=Sophos;i="5.79,393,1602572400"; d="scan'208";a="370012974" Received: from ccmincem-mobl1.amr.corp.intel.com (HELO [10.212.145.244]) ([10.212.145.244]) by fmsmga008-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 01 Feb 2021 09:49:44 -0800 Subject: Re: [RFC][PATCH 04/13] mm/numa: node demotion data structure and lookup To: David Rientjes , Dave Hansen Cc: linux-kernel@vger.kernel.org, linux-mm@kvack.org, yang.shi@linux.alibaba.com, ying.huang@intel.com, dan.j.williams@intel.com, david@redhat.com, osalvador@suse.de References: <20210126003411.2AC51464@viggo.jf.intel.com> <20210126003419.43281680@viggo.jf.intel.com> <6115c2e-99b7-75f7-f0dd-bc44e69e21e7@google.com> From: Dave Hansen Autocrypt: addr=dave.hansen@intel.com; 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Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.10.0 MIME-Version: 1.0 In-Reply-To: <6115c2e-99b7-75f7-f0dd-bc44e69e21e7@google.com> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: quoted-printable 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: On 1/30/21 5:19 PM, David Rientjes wrote: > On Mon, 25 Jan 2021, Dave Hansen wrote: >=20 >> diff -puN mm/migrate.c~0006-node-Define-and-export-memory-migration-pa= th mm/migrate.c >> --- a/mm/migrate.c~0006-node-Define-and-export-memory-migration-path 2= 021-01-25 16:23:09.553866709 -0800 >> +++ b/mm/migrate.c 2021-01-25 16:23:09.558866709 -0800 >> @@ -1161,6 +1161,22 @@ out: >> return rc; >> } >> =20 >> +static int node_demotion[MAX_NUMNODES] =3D {[0 ... MAX_NUMNODES - 1]= =3D NUMA_NO_NODE}; >=20 > __read_mostly? Yep, that's sane. I'll fix that up in the next revision.