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=-9.6 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, 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 C0415C33CA4 for ; Tue, 7 Jan 2020 22:46:08 +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 9254F20848 for ; Tue, 7 Jan 2020 22:46:08 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=nvidia.com header.i=@nvidia.com header.b="O7SXpxnP" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 9254F20848 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 46BD96E149; Tue, 7 Jan 2020 22:46:02 +0000 (UTC) Received: from hqnvemgate26.nvidia.com (hqnvemgate26.nvidia.com [216.228.121.65]) by gabe.freedesktop.org (Postfix) with ESMTPS id 8831B6E14A for ; Tue, 7 Jan 2020 22:46:01 +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 ; Tue, 07 Jan 2020 14:45:43 -0800 Received: from hqmail.nvidia.com ([172.20.161.6]) by hqpgpgate102.nvidia.com (PGP Universal service); Tue, 07 Jan 2020 14:46:00 -0800 X-PGP-Universal: processed; by hqpgpgate102.nvidia.com on Tue, 07 Jan 2020 14:46:00 -0800 Received: from HQMAIL107.nvidia.com (172.20.187.13) by HQMAIL101.nvidia.com (172.20.187.10) with Microsoft SMTP Server (TLS) id 15.0.1473.3; Tue, 7 Jan 2020 22:46:00 +0000 Received: from hqnvemgw03.nvidia.com (10.124.88.68) by HQMAIL107.nvidia.com (172.20.187.13) with Microsoft SMTP Server (TLS) id 15.0.1473.3 via Frontend Transport; Tue, 7 Jan 2020 22:46:00 +0000 Received: from blueforge.nvidia.com (Not Verified[10.110.48.28]) by hqnvemgw03.nvidia.com with Trustwave SEG (v7, 5, 8, 10121) id ; Tue, 07 Jan 2020 14:46:00 -0800 From: John Hubbard To: Andrew Morton Subject: [PATCH v12 04/22] mm: devmap: refactor 1-based refcounting for ZONE_DEVICE pages Date: Tue, 7 Jan 2020 14:45:40 -0800 Message-ID: <20200107224558.2362728-5-jhubbard@nvidia.com> X-Mailer: git-send-email 2.24.1 In-Reply-To: <20200107224558.2362728-1-jhubbard@nvidia.com> References: <20200107224558.2362728-1-jhubbard@nvidia.com> MIME-Version: 1.0 X-NVConfidentiality: public DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=nvidia.com; s=n1; t=1578437143; bh=sFl7O5qkL6cYvLdmqdIk73RGtBB6FCZqokigbZBUrMY=; 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=O7SXpxnPfqnoi4GkfX4so/K6LKfxjZp9CFDJ3hVzTFsaw4FNiM/p6hZBbACyEBoCo yf7XHOIf+eLp2Cc8iSvvFq+7VVBTNhxlJK2H4m3tNJA9T04i/IpArDY83drJCVtieP WvKrcmGDV1h+J/pam3tWGzn3AFe7r9EB4BEn96s+m3X1dOJgFjsCgMRfVjcRE7GcQO OXzcGGaF+DQycOPNUdlM6VVLec/PB+SmLFJxkPb5PBwM0273Q5m9hD9uGZYFiMIOJq 1HbJa5Z72byvvVP5aOGCdgLBJmfeDOJJBJm1c/wRoCBSs5TideUVdkvht8rIV74H2G FyCDx/8nPt7KA== X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 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 , "Kirill A . 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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 dyByb3V0aW5lLCBwdXRfZGV2bWFwX21hbmFnZWRfcGFnZSgpLCB0byBoYW5kbGUKICBkZWNyZW1l bnRpbmcgdGhlIHJlZmNvdW50IGZvciBaT05FX0RFVklDRSBwYWdlcy4KCiogQ2hhbmdlIGNhbGxl cnMgKGp1c3QgcmVsZWFzZV9wYWdlcygpIGFuZCBwdXRfcGFnZSgpKSB0byBjaGVjawogIHBhZ2Vf aXNfZGV2bWFwX21hbmFnZWQoKSBiZWZvcmUgY2FsbGluZyB0aGUgbmV3CiAgcHV0X2Rldm1hcF9t 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