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 A7310C2D0C5 for ; Mon, 9 Dec 2019 22:54:32 +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 84EB32071E for ; Mon, 9 Dec 2019 22:54:32 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 84EB32071E 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 D67D76E5C5; Mon, 9 Dec 2019 22:54:15 +0000 (UTC) Received: from hqnvemgate24.nvidia.com (hqnvemgate24.nvidia.com [216.228.121.143]) by gabe.freedesktop.org (Postfix) with ESMTPS id 9FF676E5A0 for ; Mon, 9 Dec 2019 22:54:00 +0000 (UTC) Received: from hqpgpgate101.nvidia.com (Not Verified[216.228.121.13]) by hqnvemgate24.nvidia.com (using TLS: TLSv1.2, DES-CBC3-SHA) id ; Mon, 09 Dec 2019 14:53:39 -0800 Received: from hqmail.nvidia.com ([172.20.161.6]) by hqpgpgate101.nvidia.com (PGP Universal service); Mon, 09 Dec 2019 14:53:59 -0800 X-PGP-Universal: processed; by hqpgpgate101.nvidia.com on Mon, 09 Dec 2019 14:53:59 -0800 Received: from HQMAIL105.nvidia.com (172.20.187.12) by HQMAIL101.nvidia.com (172.20.187.10) with Microsoft SMTP Server (TLS) id 15.0.1473.3; Mon, 9 Dec 2019 22:53:55 +0000 Received: from rnnvemgw01.nvidia.com (10.128.109.123) by HQMAIL105.nvidia.com (172.20.187.12) with Microsoft SMTP Server (TLS) id 15.0.1473.3 via Frontend Transport; Mon, 9 Dec 2019 22:53:55 +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 14:53:55 -0800 From: John Hubbard To: Andrew Morton Subject: [PATCH v8 06/26] mm: fix get_user_pages_remote()'s handling of FOLL_LONGTERM Date: Mon, 9 Dec 2019 14:53:24 -0800 Message-ID: <20191209225344.99740-7-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=1575932020; bh=l4ZzqtVW71Fwvoz1qyCbd1xWWEz8EY4C2cUJdAbaFHs=; h=X-PGP-Universal:From:To:CC:Subject:Date:Message-ID:X-Mailer: In-Reply-To:References:MIME-Version:X-NVConfidentiality: Content-Transfer-Encoding:Content-Type; b=Tc6ngqtdaDUUYOEZpgVNwCPnzvZKNYykbtQ3tPQgJ7XL23fY0QNCULxxFBi+lsPXX XDwVnw0tTtpKy6Q50IbDLdmOKpfug+eTUgstYjxxdNqJGPfcK1R+lI+5xfXnCrKk0h vR7xtB6lCCRfunBcDYw1DbHdsr0FBJMLzidLxFUIkiQFwApLbu29Qe7bVy66Vi9Ym/ PqOy+2DjkhicWrqQZHOf88SY1f6fnW6jHiELsn5krAapqoIQggFqkgj7gX9eBl+1jj iD6MPf75Y/JAw17r9Na4KGxBjHvJhbxC3DCszYkpTwv5V2JBI/+6JQhenmBAUJjLZW 7qHI+gx7vSotQ== 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 , Jonathan Corbet , linux-rdma@vger.kernel.org, Michael Ellerman , Christoph Hellwig , Jason Gunthorpe , 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" QXMgaXQgc2F5cyBpbiB0aGUgdXBkYXRlZCBjb21tZW50IGluIGd1cC5jOiBjdXJyZW50IEZPTExf TE9OR1RFUk0KYmVoYXZpb3IgaXMgaW5jb21wYXRpYmxlIHdpdGggRkFVTFRfRkxBR19BTExPV19S RVRSWSBiZWNhdXNlIG9mIHRoZQpGUyBEQVggY2hlY2sgcmVxdWlyZW1lbnQgb24gdm1hcy4KCkhv d2V2ZXIsIHRoZSBjb3JyZXNwb25kaW5nIHJlc3RyaWN0aW9uIGluIGdldF91c2VyX3BhZ2VzX3Jl bW90ZSgpIHdhcwpzbGlnaHRseSBzdHJpY3RlciB0aGFuIGlzIGFjdHVhbGx5IHJlcXVpcmVkOiBp dCBmb3JiYWRlIGFsbApGT0xMX0xPTkdURVJNIGNhbGxlcnMsIGJ1dCB3ZSBjYW4gYWN0dWFsbHkg YWxsb3cgRk9MTF9MT05HVEVSTSBjYWxsZXJzCnRoYXQgZG8gbm90IHNldCB0aGUgImxvY2tlZCIg YXJnLgoKVXBkYXRlIHRoZSBjb2RlIGFuZCBjb21tZW50cyB0byBsb29zZW4gdGhlIHJlc3RyaWN0 aW9uLCBhbGxvd2luZwpGT0xMX0xPTkdURVJNIGluIHNvbWUgY2FzZXMuCgpBbHNvLCBjb3B5IHRo ZSBEQVggY2hlY2sgKCJpZiBhIFZNQSBpcyBEQVgsIGRvbid0IGFsbG93IGxvbmcgdGVybQpwaW5u aW5nIikgZnJvbSB0aGUgVkZJTyBjYWxsIHNpdGUsIGFsbCB0aGUgd2F5IGludG8gdGhlIGludGVy bmFscwpvZiBnZXRfdXNlcl9wYWdlc19yZW1vdGUoKSBhbmQgX19ndXBfbG9uZ3Rlcm1fbG9ja2Vk KCkuIFRoYXQgaXM6CmdldF91c2VyX3BhZ2VzX3JlbW90ZSgpIGNhbGxzIF9fZ3VwX2xvbmd0ZXJt X2xvY2tlZCgpLCB3aGljaCBpbiB0dXJuCmNhbGxzIGNoZWNrX2RheF92bWFzKCkuIFRoaXMgY2hl Y2sgd2lsbCB0aGVuIGJlIHJlbW92ZWQgZnJvbSB0aGUgVkZJTwpjYWxsIHNpdGUgaW4gYSBzdWJz ZXF1ZW50IHBhdGNoLgoKVGhhbmtzIHRvIEphc29uIEd1bnRob3JwZSBmb3IgcG9pbnRpbmcgb3V0 IGEgY2xlYW4gd2F5IHRvIGZpeCB0aGlzLAphbmQgdG8gRGFuIFdpbGxpYW1zIGZvciBoZWxwaW5n IGNsYXJpZnkgdGhlIERBWCByZWZhY3RvcmluZy4KClRlc3RlZC1ieTogQWxleCBXaWxsaWFtc29u IDxhbGV4LndpbGxpYW1zb25AcmVkaGF0LmNvbT4KQWNrZWQtYnk6IEFsZXggV2lsbGlhbXNvbiA8 YWxleC53aWxsaWFtc29uQHJlZGhhdC5jb20+ClJldmlld2VkLWJ5OiBKYXNvbiBHdW50aG9ycGUg PGpnZ0BtZWxsYW5veC5jb20+ClJldmlld2VkLWJ5OiBJcmEgV2VpbnkgPGlyYS53ZWlueUBpbnRl bC5jb20+ClN1Z2dlc3RlZC1ieTogSmFzb24gR3VudGhvcnBlIDxqZ2dAemllcGUuY2E+CkNjOiBE YW4gV2lsbGlhbXMgPGRhbi5qLndpbGxpYW1zQGludGVsLmNvbT4KQ2M6IEplcm9tZSBHbGlzc2Ug PGpnbGlzc2VAcmVkaGF0LmNvbT4KU2lnbmVkLW9mZi1ieTogSm9obiBIdWJiYXJkIDxqaHViYmFy ZEBudmlkaWEuY29tPgotLS0KIG1tL2d1cC5jIHwgMjcgKysrKysrKysrKysrKysrKysrKysrKy0t LS0tCiAxIGZpbGUgY2hhbmdlZCwgMjIgaW5zZXJ0aW9ucygrKSwgNSBkZWxldGlvbnMoLSkKCmRp ZmYgLS1naXQgYS9tbS9ndXAuYyBiL21tL2d1cC5jCmluZGV4IDNlY2NlMjk3YTQ3Zi4uYzBjNTY4 ODhlN2NjIDEwMDY0NAotLS0gYS9tbS9ndXAuYworKysgYi9tbS9ndXAuYwpAQCAtMjksNiArMjks MTMgQEAgc3RydWN0IGZvbGxvd19wYWdlX2NvbnRleHQgewogCXVuc2lnbmVkIGludCBwYWdlX21h c2s7CiB9OwogCitzdGF0aWMgX19hbHdheXNfaW5saW5lIGxvbmcgX19ndXBfbG9uZ3Rlcm1fbG9j a2VkKHN0cnVjdCB0YXNrX3N0cnVjdCAqdHNrLAorCQkJCQkJICBzdHJ1Y3QgbW1fc3RydWN0ICpt bSwKKwkJCQkJCSAgdW5zaWduZWQgbG9uZyBzdGFydCwKKwkJCQkJCSAgdW5zaWduZWQgbG9uZyBu cl9wYWdlcywKKwkJCQkJCSAgc3RydWN0IHBhZ2UgKipwYWdlcywKKwkJCQkJCSAgc3RydWN0IHZt X2FyZWFfc3RydWN0ICoqdm1hcywKKwkJCQkJCSAgdW5zaWduZWQgaW50IGZsYWdzKTsKIC8qCiAg KiBSZXR1cm4gdGhlIGNvbXBvdW5kIGhlYWQgcGFnZSB3aXRoIHJlZiBhcHByb3ByaWF0ZWx5IGlu Y3JlbWVudGVkLAogICogb3IgTlVMTCBpZiB0aGF0IGZhaWxlZC4KQEAgLTExNzksMTMgKzExODYs MjMgQEAgbG9uZyBnZXRfdXNlcl9wYWdlc19yZW1vdGUoc3RydWN0IHRhc2tfc3RydWN0ICp0c2ss IHN0cnVjdCBtbV9zdHJ1Y3QgKm1tLAogCQlzdHJ1Y3Qgdm1fYXJlYV9zdHJ1Y3QgKip2bWFzLCBp bnQgKmxvY2tlZCkKIHsKIAkvKgotCSAqIEZJWE1FOiBDdXJyZW50IEZPTExfTE9OR1RFUk0gYmVo YXZpb3IgaXMgaW5jb21wYXRpYmxlIHdpdGgKKwkgKiBQYXJ0cyBvZiBGT0xMX0xPTkdURVJNIGJl aGF2aW9yIGFyZSBpbmNvbXBhdGlibGUgd2l0aAogCSAqIEZBVUxUX0ZMQUdfQUxMT1dfUkVUUlkg YmVjYXVzZSBvZiB0aGUgRlMgREFYIGNoZWNrIHJlcXVpcmVtZW50IG9uCi0JICogdm1hcy4gIEFz IHRoZXJlIGFyZSBubyB1c2VycyBvZiB0aGlzIGZsYWcgaW4gdGhpcyBjYWxsIHdlIHNpbXBseQot CSAqIGRpc2FsbG93IHRoaXMgb3B0aW9uIGZvciBub3cuCisJICogdm1hcy4gSG93ZXZlciwgdGhp cyBvbmx5IGNvbWVzIHVwIGlmIGxvY2tlZCBpcyBzZXQsIGFuZCB0aGVyZSBhcmUKKwkgKiBjYWxs ZXJzIHRoYXQgZG8gcmVxdWVzdCBGT0xMX0xPTkdURVJNLCBidXQgZG8gbm90IHNldCBsb2NrZWQu IFNvLAorCSAqIGFsbG93IHdoYXQgd2UgY2FuLgogCSAqLwotCWlmIChXQVJOX09OX09OQ0UoZ3Vw X2ZsYWdzICYgRk9MTF9MT05HVEVSTSkpCi0JCXJldHVybiAtRUlOVkFMOworCWlmIChndXBfZmxh Z3MgJiBGT0xMX0xPTkdURVJNKSB7CisJCWlmIChXQVJOX09OX09OQ0UobG9ja2VkKSkKKwkJCXJl dHVybiAtRUlOVkFMOworCQkvKgorCQkgKiBUaGlzIHdpbGwgY2hlY2sgdGhlIHZtYXMgKGV2ZW4g aWYgb3VyIHZtYXMgYXJnIGlzIE5VTEwpCisJCSAqIGFuZCByZXR1cm4gLUVOT1RTVVBQIGlmIERB WCBpc24ndCBhbGxvd2VkIGluIHRoaXMgY2FzZToKKwkJICovCisJCXJldHVybiBfX2d1cF9sb25n dGVybV9sb2NrZWQodHNrLCBtbSwgc3RhcnQsIG5yX3BhZ2VzLCBwYWdlcywKKwkJCQkJICAgICB2 bWFzLCBndXBfZmxhZ3MgfCBGT0xMX1RPVUNIIHwKKwkJCQkJICAgICBGT0xMX1JFTU9URSk7CisJ fQogCiAJcmV0dXJuIF9fZ2V0X3VzZXJfcGFnZXNfbG9ja2VkKHRzaywgbW0sIHN0YXJ0LCBucl9w YWdlcywgcGFnZXMsIHZtYXMsCiAJCQkJICAgICAgIGxvY2tlZCwKLS0gCjIuMjQuMAoKX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX18KZHJpLWRldmVsIG1haWxp bmcgbGlzdApkcmktZGV2ZWxAbGlzdHMuZnJlZWRlc2t0b3Aub3JnCmh0dHBzOi8vbGlzdHMuZnJl ZWRlc2t0b3Aub3JnL21haWxtYW4vbGlzdGluZm8vZHJpLWRldmVs