From mboxrd@z Thu Jan 1 00:00:00 1970 From: John Hubbard Subject: [PATCH v5 11/24] goldish_pipe: convert to pin_user_pages() and put_user_page() Date: Thu, 14 Nov 2019 21:53:27 -0800 Message-ID: <20191115055340.1825745-12-jhubbard@nvidia.com> References: <20191115055340.1825745-1-jhubbard@nvidia.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: Received: from hqemgate14.nvidia.com (hqemgate14.nvidia.com [216.228.121.143]) by gabe.freedesktop.org (Postfix) with ESMTPS id 30CDA6E170 for ; Fri, 15 Nov 2019 05:53:50 +0000 (UTC) In-Reply-To: <20191115055340.1825745-1-jhubbard@nvidia.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" To: Andrew Morton 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 , 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 List-Id: dri-devel@lists.freedesktop.org MS4gQ2FsbCB0aGUgbmV3IGdsb2JhbCBwaW5fdXNlcl9wYWdlc19mYXN0KCksIGZyb20gcGluX2dv bGRmaXNoX3BhZ2VzKCkuCgoyLiBBcyByZXF1aXJlZCBieSBwaW5fdXNlcl9wYWdlcygpLCByZWxl YXNlIHRoZXNlIHBhZ2VzIHZpYQpwdXRfdXNlcl9wYWdlKCkuIEluIHRoaXMgY2FzZSwgZG8gc28g dmlhIHB1dF91c2VyX3BhZ2VzX2RpcnR5X2xvY2soKS4KClRoYXQgaGFzIHRoZSBzaWRlIGVmZmVj dCBvZiBjYWxsaW5nIHNldF9wYWdlX2RpcnR5X2xvY2soKSwgaW5zdGVhZApvZiBzZXRfcGFnZV9k aXJ0eSgpLiBUaGlzIGlzIHByb2JhYmx5IG1vcmUgYWNjdXJhdGUuCgpBcyBDaHJpc3RvcGggSGVs bHdpZyBwdXQgaXQsICJzZXRfcGFnZV9kaXJ0eSgpIGlzIG9ubHkgc2FmZSBpZiB3ZSBhcmUKZGVh 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(10.124.88.68) by HQMAIL101.nvidia.com (172.20.187.10) with Microsoft SMTP Server (TLS) id 15.0.1473.3 via Frontend Transport; Fri, 15 Nov 2019 05:53:44 +0000 Received: from blueforge.nvidia.com (Not Verified[10.110.48.28]) by hqnvemgw03.nvidia.com with Trustwave SEG (v7, 5, 8, 10121) id ; Thu, 14 Nov 2019 21:53:44 -0800 From: John Hubbard To: Andrew Morton Subject: [PATCH v5 11/24] goldish_pipe: convert to pin_user_pages() and put_user_page() Date: Thu, 14 Nov 2019 21:53:27 -0800 Message-ID: <20191115055340.1825745-12-jhubbard@nvidia.com> X-Mailer: git-send-email 2.24.0 In-Reply-To: <20191115055340.1825745-1-jhubbard@nvidia.com> References: <20191115055340.1825745-1-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=1573797229; bh=1bdN1LXqKv0ya/hHPLN7inRIruwmJpRdnobIHlrvKRo=; h=X-PGP-Universal:From:To:CC:Subject:Date:Message-ID:X-Mailer: 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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" Message-ID: <20191115055327.ZRFlyLrXhdR0BRd_ORE2fTg4vofKIfNtynKDNHyKh1U@z> MS4gQ2FsbCB0aGUgbmV3IGdsb2JhbCBwaW5fdXNlcl9wYWdlc19mYXN0KCksIGZyb20gcGluX2dv bGRmaXNoX3BhZ2VzKCkuCgoyLiBBcyByZXF1aXJlZCBieSBwaW5fdXNlcl9wYWdlcygpLCByZWxl YXNlIHRoZXNlIHBhZ2VzIHZpYQpwdXRfdXNlcl9wYWdlKCkuIEluIHRoaXMgY2FzZSwgZG8gc28g dmlhIHB1dF91c2VyX3BhZ2VzX2RpcnR5X2xvY2soKS4KClRoYXQgaGFzIHRoZSBzaWRlIGVmZmVj dCBvZiBjYWxsaW5nIHNldF9wYWdlX2RpcnR5X2xvY2soKSwgaW5zdGVhZApvZiBzZXRfcGFnZV9k aXJ0eSgpLiBUaGlzIGlzIHByb2JhYmx5IG1vcmUgYWNjdXJhdGUuCgpBcyBDaHJpc3RvcGggSGVs bHdpZyBwdXQgaXQsICJzZXRfcGFnZV9kaXJ0eSgpIGlzIG9ubHkgc2FmZSBpZiB3ZSBhcmUKZGVh bGluZyB3aXRoIGEgZmlsZSBiYWNrZWQgcGFnZSB3aGVyZSB3ZSBoYXZlIHJlZmVyZW5jZSBvbiB0 aGUgaW5vZGUgaXQKaGFuZ3Mgb2ZmLiIgWzFdCgpBbm90aGVyIHNpZGUgZWZmZWN0IGlzIHRoYXQg dGhlIHJlbGVhc2UgY29kZSBpcyBzaW1wbGlmaWVkIGJlY2F1c2UKdGhlIHBhZ2VbXSBsb29wIGlz IG5vdyBpbiBndXAuYyBpbnN0ZWFkIG9mIGhlcmUsIHNvIGp1c3QgZGVsZXRlIHRoZQpsb2NhbCBy ZWxlYXNlX3VzZXJfcGFnZXMoKSBlbnRpcmVseSwgYW5kIGNhbGwKcHV0X3VzZXJfcGFnZXNfZGly dHlfbG9jaygpIGRpcmVjdGx5LCBpbnN0ZWFkLgoKWzFdIGh0dHBzOi8vbG9yZS5rZXJuZWwub3Jn L3IvMjAxOTA3MjMxNTM2NDAuR0I3MjBAbHN0LmRlCgpSZXZpZXdlZC1ieTogSXJhIFdlaW55IDxp cmEud2VpbnlAaW50ZWwuY29tPgpTaWduZWQtb2ZmLWJ5OiBKb2huIEh1YmJhcmQgPGpodWJiYXJk QG52aWRpYS5jb20+Ci0tLQogZHJpdmVycy9wbGF0Zm9ybS9nb2xkZmlzaC9nb2xkZmlzaF9waXBl LmMgfCAxNyArKystLS0tLS0tLS0tLS0tLQogMSBmaWxlIGNoYW5nZWQsIDMgaW5zZXJ0aW9ucygr KSwgMTQgZGVsZXRpb25zKC0pCgpkaWZmIC0tZ2l0IGEvZHJpdmVycy9wbGF0Zm9ybS9nb2xkZmlz aC9nb2xkZmlzaF9waXBlLmMgYi9kcml2ZXJzL3BsYXRmb3JtL2dvbGRmaXNoL2dvbGRmaXNoX3Bp cGUuYwppbmRleCA3ZWQyYTIxYTBiYWMuLjYzNWE4YmMxYjQ4MCAxMDA2NDQKLS0tIGEvZHJpdmVy cy9wbGF0Zm9ybS9nb2xkZmlzaC9nb2xkZmlzaF9waXBlLmMKKysrIGIvZHJpdmVycy9wbGF0Zm9y bS9nb2xkZmlzaC9nb2xkZmlzaF9waXBlLmMKQEAgLTI3NCw3ICsyNzQsNyBAQCBzdGF0aWMgaW50 IHBpbl9nb2xkZmlzaF9wYWdlcyh1bnNpZ25lZCBsb25nIGZpcnN0X3BhZ2UsCiAJCSppdGVyX2xh c3RfcGFnZV9zaXplID0gbGFzdF9wYWdlX3NpemU7CiAJfQogCi0JcmV0ID0gZ2V0X3VzZXJfcGFn ZXNfZmFzdChmaXJzdF9wYWdlLCByZXF1ZXN0ZWRfcGFnZXMsCisJcmV0ID0gcGluX3VzZXJfcGFn ZXNfZmFzdChmaXJzdF9wYWdlLCByZXF1ZXN0ZWRfcGFnZXMsCiAJCQkJICAhaXNfd3JpdGUgPyBG T0xMX1dSSVRFIDogMCwKIAkJCQkgIHBhZ2VzKTsKIAlpZiAocmV0IDw9IDApCkBAIC0yODUsMTgg KzI4NSw2IEBAIHN0YXRpYyBpbnQgcGluX2dvbGRmaXNoX3BhZ2VzKHVuc2lnbmVkIGxvbmcgZmly c3RfcGFnZSwKIAlyZXR1cm4gcmV0OwogfQogCi1zdGF0aWMgdm9pZCByZWxlYXNlX3VzZXJfcGFn ZXMoc3RydWN0IHBhZ2UgKipwYWdlcywgaW50IHBhZ2VzX2NvdW50LAotCQkJICAgICAgIGludCBp c193cml0ZSwgczMyIGNvbnN1bWVkX3NpemUpCi17Ci0JaW50IGk7Ci0KLQlmb3IgKGkgPSAwOyBp IDwgcGFnZXNfY291bnQ7IGkrKykgewotCQlpZiAoIWlzX3dyaXRlICYmIGNvbnN1bWVkX3NpemUg PiAwKQotCQkJc2V0X3BhZ2VfZGlydHkocGFnZXNbaV0pOwotCQlwdXRfcGFnZShwYWdlc1tpXSk7 Ci0JfQotfQotCiAvKiBQb3B1bGF0ZSB0aGUgY2FsbCBwYXJhbWV0ZXJzLCBtZXJnaW5nIGFkamFj ZW50IHBhZ2VzIHRvZ2V0aGVyICovCiBzdGF0aWMgdm9pZCBwb3B1bGF0ZV9yd19wYXJhbXMoc3Ry dWN0IHBhZ2UgKipwYWdlcywKIAkJCSAgICAgICBpbnQgcGFnZXNfY291bnQsCkBAIC0zNzIsNyAr MzYwLDggQEAgc3RhdGljIGludCB0cmFuc2Zlcl9tYXhfYnVmZmVycyhzdHJ1Y3QgZ29sZGZpc2hf cGlwZSAqcGlwZSwKIAogCSpjb25zdW1lZF9zaXplID0gcGlwZS0+Y29tbWFuZF9idWZmZXItPnJ3 X3BhcmFtcy5jb25zdW1lZF9zaXplOwogCi0JcmVsZWFzZV91c2VyX3BhZ2VzKHBpcGUtPnBhZ2Vz LCBwYWdlc19jb3VudCwgaXNfd3JpdGUsICpjb25zdW1lZF9zaXplKTsKKwlwdXRfdXNlcl9wYWdl c19kaXJ0eV9sb2NrKHBpcGUtPnBhZ2VzLCBwYWdlc19jb3VudCwKKwkJCQkgICFpc193cml0ZSAm JiAqY29uc3VtZWRfc2l6ZSA+IDApOwogCiAJbXV0ZXhfdW5sb2NrKCZwaXBlLT5sb2NrKTsKIAly ZXR1cm4gMDsKLS0gCjIuMjQuMAoKX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX18KZHJpLWRldmVsIG1haWxpbmcgbGlzdApkcmktZGV2ZWxAbGlzdHMuZnJlZWRl c2t0b3Aub3JnCmh0dHBzOi8vbGlzdHMuZnJlZWRlc2t0b3Aub3JnL21haWxtYW4vbGlzdGluZm8v ZHJpLWRldmVs