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=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, 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 E5E24C33CAD for ; Mon, 25 Nov 2019 23:11:31 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id B5180207FD for ; Mon, 25 Nov 2019 23:11:31 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=nvidia.com header.i=@nvidia.com header.b="d1rkuZ9j" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727613AbfKYXL3 (ORCPT ); Mon, 25 Nov 2019 18:11:29 -0500 Received: from hqemgate16.nvidia.com ([216.228.121.65]:11424 "EHLO hqemgate16.nvidia.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727369AbfKYXLH (ORCPT ); Mon, 25 Nov 2019 18:11:07 -0500 Received: from hqpgpgate101.nvidia.com (Not Verified[216.228.121.13]) by hqemgate16.nvidia.com (using TLS: TLSv1.2, DES-CBC3-SHA) id ; Mon, 25 Nov 2019 15:11:04 -0800 Received: from hqmail.nvidia.com ([172.20.161.6]) by hqpgpgate101.nvidia.com (PGP Universal service); Mon, 25 Nov 2019 15:11:01 -0800 X-PGP-Universal: processed; by hqpgpgate101.nvidia.com on Mon, 25 Nov 2019 15:11:01 -0800 Received: from HQMAIL109.nvidia.com (172.20.187.15) by HQMAIL101.nvidia.com (172.20.187.10) with Microsoft SMTP Server (TLS) id 15.0.1473.3; Mon, 25 Nov 2019 23:11:01 +0000 Received: from HQMAIL101.nvidia.com (172.20.187.10) by HQMAIL109.nvidia.com (172.20.187.15) with Microsoft SMTP Server (TLS) id 15.0.1473.3; Mon, 25 Nov 2019 23:11:01 +0000 Received: from rnnvemgw01.nvidia.com (10.128.109.123) by HQMAIL101.nvidia.com (172.20.187.10) with Microsoft SMTP Server (TLS) id 15.0.1473.3 via Frontend Transport; Mon, 25 Nov 2019 23:11:00 +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, 25 Nov 2019 15:10:59 -0800 From: John Hubbard To: Andrew Morton CC: Al Viro , Alex Williamson , Benjamin Herrenschmidt , =?UTF-8?q?Bj=C3=B6rn=20T=C3=B6pel?= , Christoph Hellwig , Dan Williams , Daniel Vetter , Dave Chinner , David Airlie , "David S . Miller" , Ira Weiny , Jan Kara , Jason Gunthorpe , Jens Axboe , Jonathan Corbet , =?UTF-8?q?J=C3=A9r=C3=B4me=20Glisse?= , Magnus Karlsson , "Mauro Carvalho Chehab" , Michael Ellerman , Michal Hocko , Mike Kravetz , "Paul Mackerras" , Shuah Khan , Vlastimil Babka , , , , , , , , , , , , , LKML , John Hubbard Subject: [PATCH v2 17/19] powerpc: book3s64: convert to pin_user_pages() and put_user_page() Date: Mon, 25 Nov 2019 15:10:33 -0800 Message-ID: <20191125231035.1539120-18-jhubbard@nvidia.com> X-Mailer: git-send-email 2.24.0 In-Reply-To: <20191125231035.1539120-1-jhubbard@nvidia.com> References: <20191125231035.1539120-1-jhubbard@nvidia.com> MIME-Version: 1.0 X-NVConfidentiality: public Content-Transfer-Encoding: quoted-printable Content-Type: text/plain DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=nvidia.com; s=n1; t=1574723464; bh=IrXYbV9R0vnJHGhlZjINDlSdvrs03wECmgURaURVtqE=; 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=d1rkuZ9jw5XVdDE8unovl+XhtlzDrFHAwhdSm/VDcrIHxgCyBdXVk+432afWe/N9p 7uuieiuoQ6nuR7lF5XisuR0dV2OcDRZSVfdwNfGXPYd4spMHN6xSrYwrQVS1iFrwPn GMge0QDtzHP3exMW9qbhRrWODM2zk3OkEBb9v3C9koi08pqPgfyC7Hu6WVrOSadedH UUxv8Pzbnlz9eFCbIEnTpu3PUUL9x2g6/Gcas3/eBUGC9zSbDsfdYnAeR2CcH62WKn 4lMWXFmcxnhlZCDkj70wtdNY1A1IaQbZNhUPQd4RllMxz2mnbjOn5b/d/NDrZ8So5x tVjE2P4dWAdCg== Sender: linux-block-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-block@vger.kernel.org 1. Convert from get_user_pages() to pin_user_pages(). 2. As required by pin_user_pages(), release these pages via put_user_page(). In this case, do so via put_user_pages_dirty_lock(). That has the side effect of calling set_page_dirty_lock(), instead of set_page_dirty(). This is probably more accurate. As Christoph Hellwig put it, "set_page_dirty() is only safe if we are dealing with a file backed page where we have reference on the inode it hangs off." [1] [1] https://lore.kernel.org/r/20190723153640.GB720@lst.de Cc: Jan Kara Signed-off-by: John Hubbard --- arch/powerpc/mm/book3s64/iommu_api.c | 12 +++++------- 1 file changed, 5 insertions(+), 7 deletions(-) diff --git a/arch/powerpc/mm/book3s64/iommu_api.c b/arch/powerpc/mm/book3s6= 4/iommu_api.c index 56cc84520577..fc1670a6fc3c 100644 --- a/arch/powerpc/mm/book3s64/iommu_api.c +++ b/arch/powerpc/mm/book3s64/iommu_api.c @@ -103,7 +103,7 @@ static long mm_iommu_do_alloc(struct mm_struct *mm, uns= igned long ua, for (entry =3D 0; entry < entries; entry +=3D chunk) { unsigned long n =3D min(entries - entry, chunk); =20 - ret =3D get_user_pages(ua + (entry << PAGE_SHIFT), n, + ret =3D pin_user_pages(ua + (entry << PAGE_SHIFT), n, FOLL_WRITE | FOLL_LONGTERM, mem->hpages + entry, NULL); if (ret =3D=3D n) { @@ -167,9 +167,8 @@ static long mm_iommu_do_alloc(struct mm_struct *mm, uns= igned long ua, return 0; =20 free_exit: - /* free the reference taken */ - for (i =3D 0; i < pinned; i++) - put_page(mem->hpages[i]); + /* free the references taken */ + put_user_pages(mem->hpages, pinned); =20 vfree(mem->hpas); kfree(mem); @@ -212,10 +211,9 @@ static void mm_iommu_unpin(struct mm_iommu_table_group= _mem_t *mem) if (!page) continue; =20 - if (mem->hpas[i] & MM_IOMMU_TABLE_GROUP_PAGE_DIRTY) - SetPageDirty(page); + put_user_pages_dirty_lock(&page, 1, + mem->hpas[i] & MM_IOMMU_TABLE_GROUP_PAGE_DIRTY); =20 - put_page(page); mem->hpas[i] =3D 0; } } --=20 2.24.0 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=unavailable 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 5E30BC432C0 for ; Mon, 25 Nov 2019 23:50:55 +0000 (UTC) Received: from lists.ozlabs.org (lists.ozlabs.org [203.11.71.2]) (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 0F43C20733 for ; 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Mon, 25 Nov 2019 23:11:01 +0000 Received: from rnnvemgw01.nvidia.com (10.128.109.123) by HQMAIL101.nvidia.com (172.20.187.10) with Microsoft SMTP Server (TLS) id 15.0.1473.3 via Frontend Transport; Mon, 25 Nov 2019 23:11:00 +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, 25 Nov 2019 15:10:59 -0800 From: John Hubbard To: Andrew Morton Subject: [PATCH v2 17/19] powerpc: book3s64: convert to pin_user_pages() and put_user_page() Date: Mon, 25 Nov 2019 15:10:33 -0800 Message-ID: <20191125231035.1539120-18-jhubbard@nvidia.com> X-Mailer: git-send-email 2.24.0 In-Reply-To: <20191125231035.1539120-1-jhubbard@nvidia.com> References: <20191125231035.1539120-1-jhubbard@nvidia.com> MIME-Version: 1.0 X-NVConfidentiality: public Content-Transfer-Encoding: quoted-printable Content-Type: text/plain DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=nvidia.com; s=n1; t=1574723464; bh=IrXYbV9R0vnJHGhlZjINDlSdvrs03wECmgURaURVtqE=; 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Miller" , Mike Kravetz Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" 1. Convert from get_user_pages() to pin_user_pages(). 2. As required by pin_user_pages(), release these pages via put_user_page(). In this case, do so via put_user_pages_dirty_lock(). That has the side effect of calling set_page_dirty_lock(), instead of set_page_dirty(). This is probably more accurate. As Christoph Hellwig put it, "set_page_dirty() is only safe if we are dealing with a file backed page where we have reference on the inode it hangs off." [1] [1] https://lore.kernel.org/r/20190723153640.GB720@lst.de Cc: Jan Kara Signed-off-by: John Hubbard --- arch/powerpc/mm/book3s64/iommu_api.c | 12 +++++------- 1 file changed, 5 insertions(+), 7 deletions(-) diff --git a/arch/powerpc/mm/book3s64/iommu_api.c b/arch/powerpc/mm/book3s6= 4/iommu_api.c index 56cc84520577..fc1670a6fc3c 100644 --- a/arch/powerpc/mm/book3s64/iommu_api.c +++ b/arch/powerpc/mm/book3s64/iommu_api.c @@ -103,7 +103,7 @@ static long mm_iommu_do_alloc(struct mm_struct *mm, uns= igned long ua, for (entry =3D 0; entry < entries; entry +=3D chunk) { unsigned long n =3D min(entries - entry, chunk); =20 - ret =3D get_user_pages(ua + (entry << PAGE_SHIFT), n, + ret =3D pin_user_pages(ua + (entry << PAGE_SHIFT), n, FOLL_WRITE | FOLL_LONGTERM, mem->hpages + entry, NULL); if (ret =3D=3D n) { @@ -167,9 +167,8 @@ static long mm_iommu_do_alloc(struct mm_struct *mm, uns= igned long ua, return 0; =20 free_exit: - /* free the reference taken */ - for (i =3D 0; i < pinned; i++) - put_page(mem->hpages[i]); + /* free the references taken */ + put_user_pages(mem->hpages, pinned); =20 vfree(mem->hpas); kfree(mem); @@ -212,10 +211,9 @@ static void mm_iommu_unpin(struct mm_iommu_table_group= _mem_t *mem) if (!page) continue; =20 - if (mem->hpas[i] & MM_IOMMU_TABLE_GROUP_PAGE_DIRTY) - SetPageDirty(page); + put_user_pages_dirty_lock(&page, 1, + mem->hpas[i] & MM_IOMMU_TABLE_GROUP_PAGE_DIRTY); =20 - put_page(page); mem->hpas[i] =3D 0; } } --=20 2.24.0 From mboxrd@z Thu Jan 1 00:00:00 1970 From: John Hubbard Subject: [PATCH v2 17/19] powerpc: book3s64: convert to pin_user_pages() and put_user_page() Date: Mon, 25 Nov 2019 15:10:33 -0800 Message-ID: <20191125231035.1539120-18-jhubbard@nvidia.com> References: <20191125231035.1539120-1-jhubbard@nvidia.com> Mime-Version: 1.0 Content-Type: text/plain Content-Transfer-Encoding: quoted-printable Return-path: In-Reply-To: <20191125231035.1539120-1-jhubbard@nvidia.com> Sender: linux-kernel-owner@vger.kernel.org To: Andrew Morton Cc: Al Viro , Alex Williamson , Benjamin Herrenschmidt , =?UTF-8?q?Bj=C3=B6rn=20T=C3=B6pel?= , Christoph Hellwig , Dan Williams , Daniel Vetter , Dave Chinner , David Airlie , "David S . Miller" , Ira Weiny , Jan Kara , Jason Gunthorpe , Jens Axboe , Jonathan Corbet , =?UTF-8?q?J=C3=A9r=C3=B4me=20Glisse?= , Magnus Karlsson , Mauro Carvalho Chehab , Michael Ellerman List-Id: dri-devel@lists.freedesktop.org 1. Convert from get_user_pages() to pin_user_pages(). 2. As required by pin_user_pages(), release these pages via put_user_page(). In this case, do so via put_user_pages_dirty_lock(). That has the side effect of calling set_page_dirty_lock(), instead of set_page_dirty(). This is probably more accurate. As Christoph Hellwig put it, "set_page_dirty() is only safe if we are dealing with a file backed page where we have reference on the inode it hangs off." [1] [1] https://lore.kernel.org/r/20190723153640.GB720@lst.de Cc: Jan Kara Signed-off-by: John Hubbard --- arch/powerpc/mm/book3s64/iommu_api.c | 12 +++++------- 1 file changed, 5 insertions(+), 7 deletions(-) diff --git a/arch/powerpc/mm/book3s64/iommu_api.c b/arch/powerpc/mm/book3s6= 4/iommu_api.c index 56cc84520577..fc1670a6fc3c 100644 --- a/arch/powerpc/mm/book3s64/iommu_api.c +++ b/arch/powerpc/mm/book3s64/iommu_api.c @@ -103,7 +103,7 @@ static long mm_iommu_do_alloc(struct mm_struct *mm, uns= igned long ua, for (entry =3D 0; entry < entries; entry +=3D chunk) { unsigned long n =3D min(entries - entry, chunk); =20 - ret =3D get_user_pages(ua + (entry << PAGE_SHIFT), n, + ret =3D pin_user_pages(ua + (entry << PAGE_SHIFT), n, FOLL_WRITE | FOLL_LONGTERM, mem->hpages + entry, NULL); if (ret =3D=3D n) { @@ -167,9 +167,8 @@ static long mm_iommu_do_alloc(struct mm_struct *mm, uns= igned long ua, return 0; =20 free_exit: - /* free the reference taken */ - for (i =3D 0; i < pinned; i++) - put_page(mem->hpages[i]); + /* free the references taken */ + put_user_pages(mem->hpages, pinned); =20 vfree(mem->hpas); kfree(mem); @@ -212,10 +211,9 @@ static void mm_iommu_unpin(struct mm_iommu_table_group= _mem_t *mem) if (!page) continue; =20 - if (mem->hpas[i] & MM_IOMMU_TABLE_GROUP_PAGE_DIRTY) - SetPageDirty(page); + put_user_pages_dirty_lock(&page, 1, + mem->hpas[i] & MM_IOMMU_TABLE_GROUP_PAGE_DIRTY); =20 - put_page(page); mem->hpas[i] =3D 0; } } --=20 2.24.0 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 8EA04C33CAD for ; Mon, 25 Nov 2019 23:11:52 +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 6F8E12075C for ; 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Mon, 25 Nov 2019 23:11:01 +0000 Received: from HQMAIL101.nvidia.com (172.20.187.10) by HQMAIL109.nvidia.com (172.20.187.15) with Microsoft SMTP Server (TLS) id 15.0.1473.3; Mon, 25 Nov 2019 23:11:01 +0000 Received: from rnnvemgw01.nvidia.com (10.128.109.123) by HQMAIL101.nvidia.com (172.20.187.10) with Microsoft SMTP Server (TLS) id 15.0.1473.3 via Frontend Transport; Mon, 25 Nov 2019 23:11:00 +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, 25 Nov 2019 15:10:59 -0800 From: John Hubbard To: Andrew Morton Subject: [PATCH v2 17/19] powerpc: book3s64: convert to pin_user_pages() and put_user_page() Date: Mon, 25 Nov 2019 15:10:33 -0800 Message-ID: <20191125231035.1539120-18-jhubbard@nvidia.com> X-Mailer: git-send-email 2.24.0 In-Reply-To: <20191125231035.1539120-1-jhubbard@nvidia.com> References: <20191125231035.1539120-1-jhubbard@nvidia.com> MIME-Version: 1.0 X-NVConfidentiality: public X-Mailman-Original-DKIM-Signature: v=1; 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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" Message-ID: <20191125231033.Ws06yyg5dAGwDfp9exLIM3Fsarv29SgHlKwC3ImrUBI@z> MS4gQ29udmVydCBmcm9tIGdldF91c2VyX3BhZ2VzKCkgdG8gcGluX3VzZXJfcGFnZXMoKS4KCjIu IEFzIHJlcXVpcmVkIGJ5IHBpbl91c2VyX3BhZ2VzKCksIHJlbGVhc2UgdGhlc2UgcGFnZXMgdmlh CnB1dF91c2VyX3BhZ2UoKS4gSW4gdGhpcyBjYXNlLCBkbyBzbyB2aWEgcHV0X3VzZXJfcGFnZXNf ZGlydHlfbG9jaygpLgoKVGhhdCBoYXMgdGhlIHNpZGUgZWZmZWN0IG9mIGNhbGxpbmcgc2V0X3Bh Z2VfZGlydHlfbG9jaygpLCBpbnN0ZWFkCm9mIHNldF9wYWdlX2RpcnR5KCkuIFRoaXMgaXMgcHJv YmFibHkgbW9yZSBhY2N1cmF0ZS4KCkFzIENocmlzdG9waCBIZWxsd2lnIHB1dCBpdCwgInNldF9w YWdlX2RpcnR5KCkgaXMgb25seSBzYWZlIGlmIHdlIGFyZQpkZWFsaW5nIHdpdGggYSBmaWxlIGJh Y2tlZCBwYWdlIHdoZXJlIHdlIGhhdmUgcmVmZXJlbmNlIG9uIHRoZSBpbm9kZSBpdApoYW5ncyBv ZmYuIiBbMV0KClsxXSBodHRwczovL2xvcmUua2VybmVsLm9yZy9yLzIwMTkwNzIzMTUzNjQwLkdC NzIwQGxzdC5kZQoKQ2M6IEphbiBLYXJhIDxqYWNrQHN1c2UuY3o+ClNpZ25lZC1vZmYtYnk6IEpv aG4gSHViYmFyZCA8amh1YmJhcmRAbnZpZGlhLmNvbT4KLS0tCiBhcmNoL3Bvd2VycGMvbW0vYm9v azNzNjQvaW9tbXVfYXBpLmMgfCAxMiArKysrKy0tLS0tLS0KIDEgZmlsZSBjaGFuZ2VkLCA1IGlu c2VydGlvbnMoKyksIDcgZGVsZXRpb25zKC0pCgpkaWZmIC0tZ2l0IGEvYXJjaC9wb3dlcnBjL21t L2Jvb2szczY0L2lvbW11X2FwaS5jIGIvYXJjaC9wb3dlcnBjL21tL2Jvb2szczY0L2lvbW11X2Fw aS5jCmluZGV4IDU2Y2M4NDUyMDU3Ny4uZmMxNjcwYTZmYzNjIDEwMDY0NAotLS0gYS9hcmNoL3Bv d2VycGMvbW0vYm9vazNzNjQvaW9tbXVfYXBpLmMKKysrIGIvYXJjaC9wb3dlcnBjL21tL2Jvb2sz czY0L2lvbW11X2FwaS5jCkBAIC0xMDMsNyArMTAzLDcgQEAgc3RhdGljIGxvbmcgbW1faW9tbXVf ZG9fYWxsb2Moc3RydWN0IG1tX3N0cnVjdCAqbW0sIHVuc2lnbmVkIGxvbmcgdWEsCiAJZm9yIChl bnRyeSA9IDA7IGVudHJ5IDwgZW50cmllczsgZW50cnkgKz0gY2h1bmspIHsKIAkJdW5zaWduZWQg bG9uZyBuID0gbWluKGVudHJpZXMgLSBlbnRyeSwgY2h1bmspOwogCi0JCXJldCA9IGdldF91c2Vy X3BhZ2VzKHVhICsgKGVudHJ5IDw8IFBBR0VfU0hJRlQpLCBuLAorCQlyZXQgPSBwaW5fdXNlcl9w YWdlcyh1YSArIChlbnRyeSA8PCBQQUdFX1NISUZUKSwgbiwKIAkJCQlGT0xMX1dSSVRFIHwgRk9M TF9MT05HVEVSTSwKIAkJCQltZW0tPmhwYWdlcyArIGVudHJ5LCBOVUxMKTsKIAkJaWYgKHJldCA9 PSBuKSB7CkBAIC0xNjcsOSArMTY3LDggQEAgc3RhdGljIGxvbmcgbW1faW9tbXVfZG9fYWxsb2Mo c3RydWN0IG1tX3N0cnVjdCAqbW0sIHVuc2lnbmVkIGxvbmcgdWEsCiAJcmV0dXJuIDA7CiAKIGZy ZWVfZXhpdDoKLQkvKiBmcmVlIHRoZSByZWZlcmVuY2UgdGFrZW4gKi8KLQlmb3IgKGkgPSAwOyBp IDwgcGlubmVkOyBpKyspCi0JCXB1dF9wYWdlKG1lbS0+aHBhZ2VzW2ldKTsKKwkvKiBmcmVlIHRo ZSByZWZlcmVuY2VzIHRha2VuICovCisJcHV0X3VzZXJfcGFnZXMobWVtLT5ocGFnZXMsIHBpbm5l ZCk7CiAKIAl2ZnJlZShtZW0tPmhwYXMpOwogCWtmcmVlKG1lbSk7CkBAIC0yMTIsMTAgKzIxMSw5 IEBAIHN0YXRpYyB2b2lkIG1tX2lvbW11X3VucGluKHN0cnVjdCBtbV9pb21tdV90YWJsZV9ncm91 cF9tZW1fdCAqbWVtKQogCQlpZiAoIXBhZ2UpCiAJCQljb250aW51ZTsKIAotCQlpZiAobWVtLT5o cGFzW2ldICYgTU1fSU9NTVVfVEFCTEVfR1JPVVBfUEFHRV9ESVJUWSkKLQkJCVNldFBhZ2VEaXJ0 eShwYWdlKTsKKwkJcHV0X3VzZXJfcGFnZXNfZGlydHlfbG9jaygmcGFnZSwgMSwKKwkJCQltZW0t PmhwYXNbaV0gJiBNTV9JT01NVV9UQUJMRV9HUk9VUF9QQUdFX0RJUlRZKTsKIAotCQlwdXRfcGFn ZShwYWdlKTsKIAkJbWVtLT5ocGFzW2ldID0gMDsKIAl9CiB9Ci0tIAoyLjI0LjAKCl9fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fCmRyaS1kZXZlbCBtYWlsaW5n IGxpc3QKZHJpLWRldmVsQGxpc3RzLmZyZWVkZXNrdG9wLm9yZwpodHRwczovL2xpc3RzLmZyZWVk ZXNrdG9wLm9yZy9tYWlsbWFuL2xpc3RpbmZvL2RyaS1kZXZlbA==