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=-9.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, USER_AGENT_GIT autolearn=ham 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 EC5A9C2D0C4 for ; Mon, 9 Dec 2019 22:54:03 +0000 (UTC) Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id CA35324656 for ; Mon, 9 Dec 2019 22:54:03 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org CA35324656 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=nvidia.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=dri-devel-bounces@lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 475246E595; Mon, 9 Dec 2019 22:53:57 +0000 (UTC) Received: from hqnvemgate26.nvidia.com (hqnvemgate26.nvidia.com [216.228.121.65]) by gabe.freedesktop.org (Postfix) with ESMTPS id B61D46E595 for ; Mon, 9 Dec 2019 22:53:55 +0000 (UTC) Received: from hqpgpgate102.nvidia.com (Not Verified[216.228.121.13]) by hqnvemgate26.nvidia.com (using TLS: TLSv1.2, DES-CBC3-SHA) id ; Mon, 09 Dec 2019 14:53:49 -0800 Received: from hqmail.nvidia.com ([172.20.161.6]) by hqpgpgate102.nvidia.com (PGP Universal service); Mon, 09 Dec 2019 14:53:54 -0800 X-PGP-Universal: processed; by hqpgpgate102.nvidia.com on Mon, 09 Dec 2019 14:53:54 -0800 Received: from HQMAIL111.nvidia.com (172.20.187.18) by HQMAIL111.nvidia.com (172.20.187.18) with Microsoft SMTP Server (TLS) id 15.0.1473.3; Mon, 9 Dec 2019 22:53:54 +0000 Received: from rnnvemgw01.nvidia.com (10.128.109.123) by HQMAIL111.nvidia.com (172.20.187.18) with Microsoft SMTP Server (TLS) id 15.0.1473.3 via Frontend Transport; Mon, 9 Dec 2019 22:53:53 +0000 Received: from blueforge.nvidia.com (Not Verified[10.110.48.28]) by rnnvemgw01.nvidia.com with Trustwave SEG (v7, 5, 8, 10121) id ; Mon, 09 Dec 2019 14:53:53 -0800 From: John Hubbard To: Andrew Morton Subject: [PATCH v8 04/26] mm: devmap: refactor 1-based refcounting for ZONE_DEVICE pages Date: Mon, 9 Dec 2019 14:53:22 -0800 Message-ID: <20191209225344.99740-5-jhubbard@nvidia.com> X-Mailer: git-send-email 2.24.0 In-Reply-To: <20191209225344.99740-1-jhubbard@nvidia.com> References: <20191209225344.99740-1-jhubbard@nvidia.com> MIME-Version: 1.0 X-NVConfidentiality: public X-Mailman-Original-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=nvidia.com; s=n1; t=1575932029; bh=r3XA8lSkA5Bnz921S0tMCXc9LaTJg03zUmdbkjLWRbI=; h=X-PGP-Universal:From:To:CC:Subject:Date:Message-ID:X-Mailer: In-Reply-To:References:MIME-Version:X-NVConfidentiality: Content-Type:Content-Transfer-Encoding; b=LfvYnGtM+fY384MUNqpbAa8qk7mekXwQmvZD6CCDk4Be0mM/wixeUTJOBgA6s52ex qQzMYlTBpFSmNCzVtfu+t/mAPl+rZQfBne1t+Gh4kdg5ugiYwX/x1vFlQiQvZv7EfO Y2gLD+tlPmU7Aj9HnqAsKp09hiNmbro8fvwMhPguSNEkD/gxjpa+9U8nUL1LptlOQ4 Uj7REaD8Ev3ubLe9XIrCPKImSG3BoXsVaJv8Louwex4QCcFKc0nJFpR1r6Q+cY/iDj o1fx+rkfe6qmvGLt38zpo2V8llX+P8vnqcapLdtRuqNl8ZWthSrdmoGGSqRLI+DVv5 PVjxZZrmaejSA== X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Michal Hocko , Jan Kara , kvm@vger.kernel.org, linux-doc@vger.kernel.org, David Airlie , Dave Chinner , dri-devel@lists.freedesktop.org, LKML , linux-mm@kvack.org, Paul Mackerras , linux-kselftest@vger.kernel.org, Ira Weiny , Christoph Hellwig , Jonathan Corbet , linux-rdma@vger.kernel.org, Michael Ellerman , Christoph Hellwig , Jason Gunthorpe , Vlastimil Babka , =?UTF-8?q?Bj=C3=B6rn=20T=C3=B6pel?= , linux-media@vger.kernel.org, Shuah Khan , John Hubbard , linux-block@vger.kernel.org, =?UTF-8?q?J=C3=A9r=C3=B4me=20Glisse?= , Al Viro , Dan Williams , Mauro Carvalho Chehab , Magnus Karlsson , Jens Axboe , netdev@vger.kernel.org, Alex Williamson , linux-fsdevel@vger.kernel.org, bpf@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, "David S . Miller" , Mike Kravetz Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" QW4gdXBjb21pbmcgcGF0Y2ggY2hhbmdlcyBhbmQgY29tcGxpY2F0ZXMgdGhlIHJlZmNvdW50aW5n IGFuZAplc3BlY2lhbGx5IHRoZSAicHV0IHBhZ2UiIGFzcGVjdHMgb2YgaXQuIEluIG9yZGVyIHRv IGtlZXAKZXZlcnl0aGluZyBjbGVhbiwgcmVmYWN0b3IgdGhlIGRldm1hcCBwYWdlIHJlbGVhc2Ug cm91dGluZXM6CgoqIFJlbmFtZSBwdXRfZGV2bWFwX21hbmFnZWRfcGFnZSgpIHRvIHBhZ2VfaXNf ZGV2bWFwX21hbmFnZWQoKSwKICBhbmQgbGltaXQgdGhlIGZ1bmN0aW9uYWxpdHkgdG8gInJlYWQg b25seSI6IHJldHVybiBhIGJvb2wsCiAgd2l0aCBubyBzaWRlIGVmZmVjdHMuCgoqIEFkZCBhIG5l dyByb3V0aW5lLCBwdXRfZGV2bWFwX21hbmFnZWRfcGFnZSgpLCB0byBoYW5kbGUgY2hlY2tpbmcK ICB3aGF0IGtpbmQgb2YgcGFnZSBpdCBpcywgYW5kIHdoYXQga2luZCBvZiByZWZjb3VudCBoYW5k bGluZyBpdAogIHJlcXVpcmVzLgoKKiBSZW5hbWUgX19wdXRfZGV2bWFwX21hbmFnZWRfcGFnZSgp IHRvIGZyZWVfZGV2bWFwX21hbmFnZWRfcGFnZSgpLAogIGFuZCBsaW1pdCB0aGUgZnVuY3Rpb25h 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