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=-9.9 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 226ACC43141 for ; Fri, 15 Nov 2019 05:54:09 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id F238D207FC for ; Fri, 15 Nov 2019 05:54:08 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=nvidia.com header.i=@nvidia.com header.b="AKYEYmiA" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727540AbfKOFyI (ORCPT ); Fri, 15 Nov 2019 00:54:08 -0500 Received: from hqemgate14.nvidia.com ([216.228.121.143]:5245 "EHLO hqemgate14.nvidia.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727528AbfKOFyH (ORCPT ); Fri, 15 Nov 2019 00:54:07 -0500 Received: from hqpgpgate102.nvidia.com (Not Verified[216.228.121.13]) by hqemgate14.nvidia.com (using TLS: TLSv1.2, DES-CBC3-SHA) id ; Thu, 14 Nov 2019 21:53:50 -0800 Received: from hqmail.nvidia.com ([172.20.161.6]) by hqpgpgate102.nvidia.com (PGP Universal service); Thu, 14 Nov 2019 21:53:47 -0800 X-PGP-Universal: processed; by hqpgpgate102.nvidia.com on Thu, 14 Nov 2019 21:53:47 -0800 Received: from HQMAIL101.nvidia.com (172.20.187.10) by HQMAIL105.nvidia.com (172.20.187.12) with Microsoft SMTP Server (TLS) id 15.0.1473.3; Fri, 15 Nov 2019 05:53:45 +0000 Received: from hqnvemgw03.nvidia.com (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 05:53:45 +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 21:53:45 -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 v5 20/24] powerpc: book3s64: convert to pin_user_pages() and put_user_page() Date: Thu, 14 Nov 2019 21:53:36 -0800 Message-ID: <20191115055340.1825745-21-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 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=1573797230; bh=IJJb9r+CEPs17zzIv7S9Yy1snV6WhIVmX2ftMMVKd1c=; 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=AKYEYmiAg5GfJHJ+iT/QmOBI7rOQBFB3ijN/pJEV8PScPSrcAWafv5cXVpu3MlqSB 3iGqLkS2e5AcPkGUNrQF1PPF2a4bRyiZb3WMfLnx7mdMl8iYAoR5LlRUo6A+JwDw1u UsiYiA7LOHWw0BSeHGG4Oy2ZF85G3SDsdqoEVulQjPtejF6xGJ6loBRRBDsRcOQXcz i/wf3Y2KScuXSpBtmHxaYHvPt0rrhYvvRImjgFKKdEFhHZ1Xy1S0gBBGJVvpdk6g5L 7kdTa+59Jz/PB/3/GzINz9i8zsYNG/qE3vEozuOnjzeyt7Nj/pGVqRmle9BMMOAORZ CzNhOnyKFs2gQ== 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] 3. Release each page in mem->hpages[] (instead of mem->hpas[]), because that is the array that pin_longterm_pages() filled in. This is more accurate and should be a little safer from a maintenance point of view. [1] https://lore.kernel.org/r/20190723153640.GB720@lst.de 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..196383e8e5a9 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(&mem->hpages[i], 1, + 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,URIBL_BLOCKED,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 53D3AC432C3 for ; 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Fri, 15 Nov 2019 05:53:45 +0000 Received: from hqnvemgw03.nvidia.com (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 05:53:45 +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 21:53:45 -0800 From: John Hubbard To: Andrew Morton Subject: [PATCH v5 20/24] powerpc: book3s64: convert to pin_user_pages() and put_user_page() Date: Thu, 14 Nov 2019 21:53:36 -0800 Message-ID: <20191115055340.1825745-21-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 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=1573797230; bh=IJJb9r+CEPs17zzIv7S9Yy1snV6WhIVmX2ftMMVKd1c=; 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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] 3. Release each page in mem->hpages[] (instead of mem->hpas[]), because that is the array that pin_longterm_pages() filled in. This is more accurate and should be a little safer from a maintenance point of view. [1] https://lore.kernel.org/r/20190723153640.GB720@lst.de 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..196383e8e5a9 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(&mem->hpages[i], 1, + 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 v5 20/24] powerpc: book3s64: convert to pin_user_pages() and put_user_page() Date: Thu, 14 Nov 2019 21:53:36 -0800 Message-ID: <20191115055340.1825745-21-jhubbard@nvidia.com> References: <20191115055340.1825745-1-jhubbard@nvidia.com> Mime-Version: 1.0 Content-Type: text/plain Content-Transfer-Encoding: quoted-printable Return-path: In-Reply-To: <20191115055340.1825745-1-jhubbard@nvidia.com> Sender: netdev-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 M 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] 3. Release each page in mem->hpages[] (instead of mem->hpas[]), because that is the array that pin_longterm_pages() filled in. This is more accurate and should be a little safer from a maintenance point of view. [1] https://lore.kernel.org/r/20190723153640.GB720@lst.de 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..196383e8e5a9 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(&mem->hpages[i], 1, + 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 2261DC33C9B for ; Fri, 15 Nov 2019 05:54:35 +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 039C62073A for ; 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Fri, 15 Nov 2019 05:53:45 +0000 Received: from hqnvemgw03.nvidia.com (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 05:53:45 +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 21:53:45 -0800 From: John Hubbard To: Andrew Morton Subject: [PATCH v5 20/24] powerpc: book3s64: convert to pin_user_pages() and put_user_page() Date: Thu, 14 Nov 2019 21:53:36 -0800 Message-ID: <20191115055340.1825745-21-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=1573797230; bh=IJJb9r+CEPs17zzIv7S9Yy1snV6WhIVmX2ftMMVKd1c=; 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; 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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: <20191115055336.kxA0WTzs84ZMJbMu1Wo2cK7X3_ealdcYJCwH3fw6O5g@z> MS4gQ29udmVydCBmcm9tIGdldF91c2VyX3BhZ2VzKCkgdG8gcGluX3VzZXJfcGFnZXMoKS4KCjIu IEFzIHJlcXVpcmVkIGJ5IHBpbl91c2VyX3BhZ2VzKCksIHJlbGVhc2UgdGhlc2UgcGFnZXMgdmlh CnB1dF91c2VyX3BhZ2UoKS4gSW4gdGhpcyBjYXNlLCBkbyBzbyB2aWEgcHV0X3VzZXJfcGFnZXNf ZGlydHlfbG9jaygpLgoKVGhhdCBoYXMgdGhlIHNpZGUgZWZmZWN0IG9mIGNhbGxpbmcgc2V0X3Bh Z2VfZGlydHlfbG9jaygpLCBpbnN0ZWFkCm9mIHNldF9wYWdlX2RpcnR5KCkuIFRoaXMgaXMgcHJv YmFibHkgbW9yZSBhY2N1cmF0ZS4KCkFzIENocmlzdG9waCBIZWxsd2lnIHB1dCBpdCwgInNldF9w YWdlX2RpcnR5KCkgaXMgb25seSBzYWZlIGlmIHdlIGFyZQpkZWFsaW5nIHdpdGggYSBmaWxlIGJh Y2tlZCBwYWdlIHdoZXJlIHdlIGhhdmUgcmVmZXJlbmNlIG9uIHRoZSBpbm9kZSBpdApoYW5ncyBv ZmYuIiBbMV0KCjMuIFJlbGVhc2UgZWFjaCBwYWdlIGluIG1lbS0+aHBhZ2VzW10gKGluc3RlYWQg b2YgbWVtLT5ocGFzW10pLCBiZWNhdXNlCnRoYXQgaXMgdGhlIGFycmF5IHRoYXQgcGluX2xvbmd0 ZXJtX3BhZ2VzKCkgZmlsbGVkIGluLiBUaGlzIGlzIG1vcmUKYWNjdXJhdGUgYW5kIHNob3VsZCBi ZSBhIGxpdHRsZSBzYWZlciBmcm9tIGEgbWFpbnRlbmFuY2UgcG9pbnQgb2YKdmlldy4KClsxXSBo dHRwczovL2xvcmUua2VybmVsLm9yZy9yLzIwMTkwNzIzMTUzNjQwLkdCNzIwQGxzdC5kZQoKU2ln bmVkLW9mZi1ieTogSm9obiBIdWJiYXJkIDxqaHViYmFyZEBudmlkaWEuY29tPgotLS0KIGFyY2gv cG93ZXJwYy9tbS9ib29rM3M2NC9pb21tdV9hcGkuYyB8IDEyICsrKysrLS0tLS0tLQogMSBmaWxl IGNoYW5nZWQsIDUgaW5zZXJ0aW9ucygrKSwgNyBkZWxldGlvbnMoLSkKCmRpZmYgLS1naXQgYS9h cmNoL3Bvd2VycGMvbW0vYm9vazNzNjQvaW9tbXVfYXBpLmMgYi9hcmNoL3Bvd2VycGMvbW0vYm9v azNzNjQvaW9tbXVfYXBpLmMKaW5kZXggNTZjYzg0NTIwNTc3Li4xOTYzODNlOGU1YTkgMTAwNjQ0 Ci0tLSBhL2FyY2gvcG93ZXJwYy9tbS9ib29rM3M2NC9pb21tdV9hcGkuYworKysgYi9hcmNoL3Bv d2VycGMvbW0vYm9vazNzNjQvaW9tbXVfYXBpLmMKQEAgLTEwMyw3ICsxMDMsNyBAQCBzdGF0aWMg bG9uZyBtbV9pb21tdV9kb19hbGxvYyhzdHJ1Y3QgbW1fc3RydWN0ICptbSwgdW5zaWduZWQgbG9u ZyB1YSwKIAlmb3IgKGVudHJ5ID0gMDsgZW50cnkgPCBlbnRyaWVzOyBlbnRyeSArPSBjaHVuaykg ewogCQl1bnNpZ25lZCBsb25nIG4gPSBtaW4oZW50cmllcyAtIGVudHJ5LCBjaHVuayk7CiAKLQkJ cmV0ID0gZ2V0X3VzZXJfcGFnZXModWEgKyAoZW50cnkgPDwgUEFHRV9TSElGVCksIG4sCisJCXJl dCA9IHBpbl91c2VyX3BhZ2VzKHVhICsgKGVudHJ5IDw8IFBBR0VfU0hJRlQpLCBuLAogCQkJCUZP TExfV1JJVEUgfCBGT0xMX0xPTkdURVJNLAogCQkJCW1lbS0+aHBhZ2VzICsgZW50cnksIE5VTEwp OwogCQlpZiAocmV0ID09IG4pIHsKQEAgLTE2Nyw5ICsxNjcsOCBAQCBzdGF0aWMgbG9uZyBtbV9p b21tdV9kb19hbGxvYyhzdHJ1Y3QgbW1fc3RydWN0ICptbSwgdW5zaWduZWQgbG9uZyB1YSwKIAly ZXR1cm4gMDsKIAogZnJlZV9leGl0OgotCS8qIGZyZWUgdGhlIHJlZmVyZW5jZSB0YWtlbiAqLwot CWZvciAoaSA9IDA7IGkgPCBwaW5uZWQ7IGkrKykKLQkJcHV0X3BhZ2UobWVtLT5ocGFnZXNbaV0p OworCS8qIGZyZWUgdGhlIHJlZmVyZW5jZXMgdGFrZW4gKi8KKwlwdXRfdXNlcl9wYWdlcyhtZW0t PmhwYWdlcywgcGlubmVkKTsKIAogCXZmcmVlKG1lbS0+aHBhcyk7CiAJa2ZyZWUobWVtKTsKQEAg LTIxMiwxMCArMjExLDkgQEAgc3RhdGljIHZvaWQgbW1faW9tbXVfdW5waW4oc3RydWN0IG1tX2lv bW11X3RhYmxlX2dyb3VwX21lbV90ICptZW0pCiAJCWlmICghcGFnZSkKIAkJCWNvbnRpbnVlOwog Ci0JCWlmIChtZW0tPmhwYXNbaV0gJiBNTV9JT01NVV9UQUJMRV9HUk9VUF9QQUdFX0RJUlRZKQot CQkJU2V0UGFnZURpcnR5KHBhZ2UpOworCQlwdXRfdXNlcl9wYWdlc19kaXJ0eV9sb2NrKCZtZW0t PmhwYWdlc1tpXSwgMSwKKwkJCQkJICBNTV9JT01NVV9UQUJMRV9HUk9VUF9QQUdFX0RJUlRZKTsK IAotCQlwdXRfcGFnZShwYWdlKTsKIAkJbWVtLT5ocGFzW2ldID0gMDsKIAl9CiB9Ci0tIAoyLjI0 LjAKCl9fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fCmRyaS1k ZXZlbCBtYWlsaW5nIGxpc3QKZHJpLWRldmVsQGxpc3RzLmZyZWVkZXNrdG9wLm9yZwpodHRwczov L2xpc3RzLmZyZWVkZXNrdG9wLm9yZy9tYWlsbWFuL2xpc3RpbmZvL2RyaS1kZXZlbA==