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[209.132.183.28]) by mx.google.com with ESMTPS id k28si2113672qtf.34.2019.06.21.08.04.56 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Fri, 21 Jun 2019 08:04:56 -0700 (PDT) Received-SPF: pass (google.com: domain of david@redhat.com designates 209.132.183.28 as permitted sender) client-ip=209.132.183.28; Authentication-Results: mx.google.com; spf=pass (google.com: domain of david@redhat.com designates 209.132.183.28 as permitted sender) smtp.mailfrom=david@redhat.com; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=redhat.com Received: from smtp.corp.redhat.com (int-mx03.intmail.prod.int.phx2.redhat.com [10.5.11.13]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 949BF223875; Fri, 21 Jun 2019 15:04:50 +0000 (UTC) Received: from [10.36.118.55] (unknown [10.36.118.55]) by smtp.corp.redhat.com (Postfix) with ESMTP id 77CE2608D0; Fri, 21 Jun 2019 15:04:46 +0000 (UTC) Subject: Re: [PATCH] mm/sparsemem: Cleanup 'section number' data types To: Matthew Wilcox , Dan Williams Cc: akpm@linux-foundation.org, Michal Hocko , Oscar Salvador , linux-mm@kvack.org, linux-nvdimm@lists.01.org, linux-kernel@vger.kernel.org References: <156107543656.1329419.11505835211949439815.stgit@dwillia2-desk3.amr.corp.intel.com> <20190621145805.GN32656@bombadil.infradead.org> From: David Hildenbrand Openpgp: preference=signencrypt Autocrypt: addr=david@redhat.com; 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Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.7.0 MIME-Version: 1.0 In-Reply-To: <20190621145805.GN32656@bombadil.infradead.org> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit X-Scanned-By: MIMEDefang 2.79 on 10.5.11.13 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.39]); Fri, 21 Jun 2019 15:04:55 +0000 (UTC) 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 21.06.19 16:58, Matthew Wilcox wrote: > On Thu, Jun 20, 2019 at 05:06:46PM -0700, Dan Williams wrote: >> David points out that there is a mixture of 'int' and 'unsigned long' >> usage for section number data types. Update the memory hotplug path to >> use 'unsigned long' consistently for section numbers. > > ... because we're seriously considering the possibility that we'll need > more than 4 billion sections? > To make it consistent ;) -- Thanks, David / dhildenb