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Thu, 6 May 2021 10:13:02 +0000 Subject: Re: [PATCH v1 04/11] mm/memremap: add ZONE_DEVICE support for compound pages To: Dan Williams Cc: Linux MM , Ira Weiny , linux-nvdimm , Matthew Wilcox , Jason Gunthorpe , Jane Chu , Muchun Song , Mike Kravetz , Andrew Morton References: <20210325230938.30752-1-joao.m.martins@oracle.com> <20210325230938.30752-5-joao.m.martins@oracle.com> <56a3e271-4ef8-ba02-639e-fd7fe7de7e36@oracle.com> From: Joao Martins Message-ID: <2c0fe38f-ac2e-7f65-fca8-93d722fa4a4f@oracle.com> Date: Thu, 6 May 2021 11:12:54 +0100 In-Reply-To: Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit X-Originating-IP: [94.61.1.144] X-ClientProxiedBy: LO2P265CA0297.GBRP265.PROD.OUTLOOK.COM (2603:10a6:600:a5::21) To BYAPR10MB3077.namprd10.prod.outlook.com (2603:10b6:a03:8c::12) MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 Received: from [192.168.1.67] (94.61.1.144) by LO2P265CA0297.GBRP265.PROD.OUTLOOK.COM (2603:10a6:600:a5::21) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.4108.25 via Frontend Transport; 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dkim=pass header.d=oracle.com header.s=corp-2020-01-29 header.b=DzPiFKXR; dkim=pass header.d=oracle.onmicrosoft.com header.s=selector2-oracle-onmicrosoft-com header.b=swYdFfbi; dmarc=pass (policy=none) header.from=oracle.com; spf=none (imf08.hostedemail.com: domain of joao.m.martins@oracle.com has no SPF policy when checking 141.146.126.78) smtp.mailfrom=joao.m.martins@oracle.com X-Stat-Signature: ps1n1j3xhd6dh8ixxzdusawubimp9b4d X-Rspamd-Server: rspam02 X-Rspamd-Queue-Id: 79B448019388 Received-SPF: none (oracle.com>: No applicable sender policy available) receiver=imf08; identity=mailfrom; envelope-from=""; helo=aserp2120.oracle.com; client-ip=141.146.126.78 X-HE-DKIM-Result: pass/pass X-HE-Tag: 1620295965-278087 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 5/6/21 12:03 AM, Dan Williams wrote: > On Wed, May 5, 2021 at 3:36 PM Joao Martins wrote: > [..] >>> Ah yup, my eyes glazed over that. I think this is another place that >>> benefits from a more specific name than "align". "pfns_per_compound" >>> "compound_pfns"? >>> >> We are still describing a page, just not a base page. So perhaps @pfns_per_hpage ? >> >> I am fine with @pfns_per_compound or @compound_pfns as well. > > My only concern about hpage is that hpage implies PMD, where compound > is generic across PMD and PUD. > True. I will stick with your suggestions.