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=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 29F89C432C0 for ; Mon, 25 Nov 2019 23:13:57 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 022B52075C for ; Mon, 25 Nov 2019 23:13:57 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=nvidia.com header.i=@nvidia.com header.b="jC5e+5ML" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727111AbfKYXKp (ORCPT ); Mon, 25 Nov 2019 18:10:45 -0500 Received: from hqemgate14.nvidia.com ([216.228.121.143]:1082 "EHLO hqemgate14.nvidia.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726118AbfKYXKo (ORCPT ); Mon, 25 Nov 2019 18:10:44 -0500 Received: from hqpgpgate101.nvidia.com (Not Verified[216.228.121.13]) by hqemgate14.nvidia.com (using TLS: TLSv1.2, DES-CBC3-SHA) id ; Mon, 25 Nov 2019 15:10:45 -0800 Received: from hqmail.nvidia.com ([172.20.161.6]) by hqpgpgate101.nvidia.com (PGP Universal service); Mon, 25 Nov 2019 15:10:41 -0800 X-PGP-Universal: processed; by hqpgpgate101.nvidia.com on Mon, 25 Nov 2019 15:10:41 -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; Mon, 25 Nov 2019 23:10:41 +0000 Received: from rnnvemgw01.nvidia.com (10.128.109.123) by HQMAIL107.nvidia.com (172.20.187.13) with Microsoft SMTP Server (TLS) id 15.0.1473.3 via Frontend Transport; Mon, 25 Nov 2019 23:10:40 +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 15:10:40 -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 , Christoph Hellwig Subject: [PATCH v2 02/19] mm/gup: move try_get_compound_head() to top, fix minor issues Date: Mon, 25 Nov 2019 15:10:18 -0800 Message-ID: <20191125231035.1539120-3-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=1574723445; bh=JKnh6awNMnXx+WkfJCjCpP/dD2pEJJn8AxQ3IWMhLGw=; 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=jC5e+5MLgArfU4yAZ5yV9ldAgz3MPot067ia5Ad3y9iAeyRJ6biBbBLvf/PCDcKlv f1hQ/Ln1SJqFWNipjx8I53p+Zfbb+f0f+0eFPX72aFxcArDBJ+XixYQChzSWmvlesy zo9CRHKV/vec5N4ZMMXzd8ayG92YQVllNM7sho//6Ec10682q2fg0mU5Mju/dwYaDr hHve6RNDUVgJ0X9nqR4M0mmdpOLHFlyo03fMhDAsqenaBK2aq88Zkl6Xydt92kKAR+ HKDi4fAiVIqVBpx0TIMHJ1OOACPk0npNX4pp8Ht3TiYweUgnDO7YqKjqhzuNctmybO PDpR/Zsa9AFBQ== Sender: linux-block-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-block@vger.kernel.org An upcoming patch uses try_get_compound_head() more widely, so move it to the top of gup.c. Also fix a tiny spelling error and a checkpatch.pl warning. Reviewed-by: Christoph Hellwig Reviewed-by: Jan Kara Reviewed-by: Ira Weiny Signed-off-by: John Hubbard --- mm/gup.c | 29 +++++++++++++++-------------- 1 file changed, 15 insertions(+), 14 deletions(-) diff --git a/mm/gup.c b/mm/gup.c index f764432914c4..3ecce297a47f 100644 --- a/mm/gup.c +++ b/mm/gup.c @@ -29,6 +29,21 @@ struct follow_page_context { unsigned int page_mask; }; =20 +/* + * Return the compound head page with ref appropriately incremented, + * or NULL if that failed. + */ +static inline struct page *try_get_compound_head(struct page *page, int re= fs) +{ + struct page *head =3D compound_head(page); + + if (WARN_ON_ONCE(page_ref_count(head) < 0)) + return NULL; + if (unlikely(!page_cache_add_speculative(head, refs))) + return NULL; + return head; +} + /** * put_user_pages_dirty_lock() - release and optionally dirty gup-pinned p= ages * @pages: array of pages to be maybe marked dirty, and definitely releas= ed. @@ -1807,20 +1822,6 @@ static void __maybe_unused undo_dev_pagemap(int *nr,= int nr_start, } } =20 -/* - * Return the compund head page with ref appropriately incremented, - * or NULL if that failed. - */ -static inline struct page *try_get_compound_head(struct page *page, int re= fs) -{ - struct page *head =3D compound_head(page); - if (WARN_ON_ONCE(page_ref_count(head) < 0)) - return NULL; - if (unlikely(!page_cache_add_speculative(head, refs))) - return NULL; - return head; -} - #ifdef CONFIG_ARCH_HAS_PTE_SPECIAL static int gup_pte_range(pmd_t pmd, unsigned long addr, unsigned long end, unsigned int flags, struct page **pages, int *nr) --=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 16DDBC432C0 for ; Mon, 25 Nov 2019 23:20:50 +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 B692E20679 for ; Mon, 25 Nov 2019 23:20:49 +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="jC5e+5ML" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org B692E20679 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=nvidia.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Received: from lists.ozlabs.org (lists.ozlabs.org [IPv6:2401:3900:2:1::3]) by lists.ozlabs.org (Postfix) with ESMTP id 47MNLl4vfYzDqQc for ; Tue, 26 Nov 2019 10:20:47 +1100 (AEDT) Authentication-Results: lists.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=nvidia.com (client-ip=216.228.121.143; helo=hqemgate14.nvidia.com; envelope-from=jhubbard@nvidia.com; receiver=) Authentication-Results: lists.ozlabs.org; dmarc=pass (p=none dis=none) header.from=nvidia.com Authentication-Results: lists.ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=nvidia.com header.i=@nvidia.com header.b="jC5e+5ML"; dkim-atps=neutral Received: from hqemgate14.nvidia.com (hqemgate14.nvidia.com [216.228.121.143]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 47MN7F0VwszDqZS for ; Tue, 26 Nov 2019 10:10:48 +1100 (AEDT) Received: from hqpgpgate101.nvidia.com (Not Verified[216.228.121.13]) by hqemgate14.nvidia.com (using TLS: TLSv1.2, DES-CBC3-SHA) id ; Mon, 25 Nov 2019 15:10:45 -0800 Received: from hqmail.nvidia.com ([172.20.161.6]) by hqpgpgate101.nvidia.com (PGP Universal service); Mon, 25 Nov 2019 15:10:41 -0800 X-PGP-Universal: processed; by hqpgpgate101.nvidia.com on Mon, 25 Nov 2019 15:10:41 -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; Mon, 25 Nov 2019 23:10:41 +0000 Received: from rnnvemgw01.nvidia.com (10.128.109.123) by HQMAIL107.nvidia.com (172.20.187.13) with Microsoft SMTP Server (TLS) id 15.0.1473.3 via Frontend Transport; Mon, 25 Nov 2019 23:10:40 +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 15:10:40 -0800 From: John Hubbard To: Andrew Morton Subject: [PATCH v2 02/19] mm/gup: move try_get_compound_head() to top, fix minor issues Date: Mon, 25 Nov 2019 15:10:18 -0800 Message-ID: <20191125231035.1539120-3-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=1574723445; bh=JKnh6awNMnXx+WkfJCjCpP/dD2pEJJn8AxQ3IWMhLGw=; 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=jC5e+5MLgArfU4yAZ5yV9ldAgz3MPot067ia5Ad3y9iAeyRJ6biBbBLvf/PCDcKlv f1hQ/Ln1SJqFWNipjx8I53p+Zfbb+f0f+0eFPX72aFxcArDBJ+XixYQChzSWmvlesy zo9CRHKV/vec5N4ZMMXzd8ayG92YQVllNM7sho//6Ec10682q2fg0mU5Mju/dwYaDr hHve6RNDUVgJ0X9nqR4M0mmdpOLHFlyo03fMhDAsqenaBK2aq88Zkl6Xydt92kKAR+ HKDi4fAiVIqVBpx0TIMHJ1OOACPk0npNX4pp8Ht3TiYweUgnDO7YqKjqhzuNctmybO PDpR/Zsa9AFBQ== X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List 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, 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 , Mauro Carvalho Chehab , Magnus Karlsson , Jens Axboe , netdev@vger.kernel.org, Alex Williamson , Daniel Vetter , linux-fsdevel@vger.kernel.org, bpf@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, "David S . Miller" , Mike Kravetz Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" An upcoming patch uses try_get_compound_head() more widely, so move it to the top of gup.c. Also fix a tiny spelling error and a checkpatch.pl warning. Reviewed-by: Christoph Hellwig Reviewed-by: Jan Kara Reviewed-by: Ira Weiny Signed-off-by: John Hubbard --- mm/gup.c | 29 +++++++++++++++-------------- 1 file changed, 15 insertions(+), 14 deletions(-) diff --git a/mm/gup.c b/mm/gup.c index f764432914c4..3ecce297a47f 100644 --- a/mm/gup.c +++ b/mm/gup.c @@ -29,6 +29,21 @@ struct follow_page_context { unsigned int page_mask; }; =20 +/* + * Return the compound head page with ref appropriately incremented, + * or NULL if that failed. + */ +static inline struct page *try_get_compound_head(struct page *page, int re= fs) +{ + struct page *head =3D compound_head(page); + + if (WARN_ON_ONCE(page_ref_count(head) < 0)) + return NULL; + if (unlikely(!page_cache_add_speculative(head, refs))) + return NULL; + return head; +} + /** * put_user_pages_dirty_lock() - release and optionally dirty gup-pinned p= ages * @pages: array of pages to be maybe marked dirty, and definitely releas= ed. @@ -1807,20 +1822,6 @@ static void __maybe_unused undo_dev_pagemap(int *nr,= int nr_start, } } =20 -/* - * Return the compund head page with ref appropriately incremented, - * or NULL if that failed. - */ -static inline struct page *try_get_compound_head(struct page *page, int re= fs) -{ - struct page *head =3D compound_head(page); - if (WARN_ON_ONCE(page_ref_count(head) < 0)) - return NULL; - if (unlikely(!page_cache_add_speculative(head, refs))) - return NULL; - return head; -} - #ifdef CONFIG_ARCH_HAS_PTE_SPECIAL static int gup_pte_range(pmd_t pmd, unsigned long addr, unsigned long end, unsigned int flags, struct page **pages, int *nr) --=20 2.24.0 From mboxrd@z Thu Jan 1 00:00:00 1970 From: John Hubbard Subject: [PATCH v2 02/19] mm/gup: move try_get_compound_head() to top, fix minor issues Date: Mon, 25 Nov 2019 15:10:18 -0800 Message-ID: <20191125231035.1539120-3-jhubbard@nvidia.com> References: <20191125231035.1539120-1-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 71F9389F4F for ; Mon, 25 Nov 2019 23:10:42 +0000 (UTC) In-Reply-To: <20191125231035.1539120-1-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 , 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 List-Id: dri-devel@lists.freedesktop.org QW4gdXBjb21pbmcgcGF0Y2ggdXNlcyB0cnlfZ2V0X2NvbXBvdW5kX2hlYWQoKSBtb3JlIHdpZGVs eSwKc28gbW92ZSBpdCB0byB0aGUgdG9wIG9mIGd1cC5jLgoKQWxzbyBmaXggYSB0aW55IHNwZWxs aW5nIGVycm9yIGFuZCBhIGNoZWNrcGF0Y2gucGwgd2FybmluZy4KClJldmlld2VkLWJ5OiBDaHJp c3RvcGggSGVsbHdpZyA8aGNoQGxzdC5kZT4KUmV2aWV3ZWQtYnk6IEphbiBLYXJhIDxqYWNrQHN1 c2UuY3o+ClJldmlld2VkLWJ5OiBJcmEgV2VpbnkgPGlyYS53ZWlueUBpbnRlbC5jb20+ClNpZ25l ZC1vZmYtYnk6IEpvaG4gSHViYmFyZCA8amh1YmJhcmRAbnZpZGlhLmNvbT4KLS0tCiBtbS9ndXAu YyB8IDI5ICsrKysrKysrKysrKysrKy0tLS0tLS0tLS0tLS0tCiAxIGZpbGUgY2hhbmdlZCwgMTUg aW5zZXJ0aW9ucygrKSwgMTQgZGVsZXRpb25zKC0pCgpkaWZmIC0tZ2l0IGEvbW0vZ3VwLmMgYi9t bS9ndXAuYwppbmRleCBmNzY0NDMyOTE0YzQuLjNlY2NlMjk3YTQ3ZiAxMDA2NDQKLS0tIGEvbW0v Z3VwLmMKKysrIGIvbW0vZ3VwLmMKQEAgLTI5LDYgKzI5LDIxIEBAIHN0cnVjdCBmb2xsb3dfcGFn ZV9jb250ZXh0IHsKIAl1bnNpZ25lZCBpbnQgcGFnZV9tYXNrOwogfTsKIAorLyoKKyAqIFJldHVy biB0aGUgY29tcG91bmQgaGVhZCBwYWdlIHdpdGggcmVmIGFwcHJvcHJpYXRlbHkgaW5jcmVtZW50 ZWQsCisgKiBvciBOVUxMIGlmIHRoYXQgZmFpbGVkLgorICovCitzdGF0aWMgaW5saW5lIHN0cnVj dCBwYWdlICp0cnlfZ2V0X2NvbXBvdW5kX2hlYWQoc3RydWN0IHBhZ2UgKnBhZ2UsIGludCByZWZz KQoreworCXN0cnVjdCBwYWdlICpoZWFkID0gY29tcG91bmRfaGVhZChwYWdlKTsKKworCWlmIChX QVJOX09OX09OQ0UocGFnZV9yZWZfY291bnQoaGVhZCkgPCAwKSkKKwkJcmV0dXJuIE5VTEw7CisJ aWYgKHVubGlrZWx5KCFwYWdlX2NhY2hlX2FkZF9zcGVjdWxhdGl2ZShoZWFkLCByZWZzKSkpCisJ CXJldHVybiBOVUxMOworCXJldHVybiBoZWFkOworfQorCiAvKioKICAqIHB1dF91c2VyX3BhZ2Vz X2RpcnR5X2xvY2soKSAtIHJlbGVhc2UgYW5kIG9wdGlvbmFsbHkgZGlydHkgZ3VwLXBpbm5lZCBw YWdlcwogICogQHBhZ2VzOiAgYXJyYXkgb2YgcGFnZXMgdG8gYmUgbWF5YmUgbWFya2VkIGRpcnR5 LCBhbmQgZGVmaW5pdGVseSByZWxlYXNlZC4KQEAgLTE4MDcsMjAgKzE4MjIsNiBAQCBzdGF0aWMg dm9pZCBfX21heWJlX3VudXNlZCB1bmRvX2Rldl9wYWdlbWFwKGludCAqbnIsIGludCBucl9zdGFy dCwKIAl9CiB9CiAKLS8qCi0gKiBSZXR1cm4gdGhlIGNvbXB1bmQgaGVhZCBwYWdlIHdpdGggcmVm IGFwcHJvcHJpYXRlbHkgaW5jcmVtZW50ZWQsCi0gKiBvciBOVUxMIGlmIHRoYXQgZmFpbGVkLgot ICovCi1zdGF0aWMgaW5saW5lIHN0cnVjdCBwYWdlICp0cnlfZ2V0X2NvbXBvdW5kX2hlYWQoc3Ry dWN0IHBhZ2UgKnBhZ2UsIGludCByZWZzKQotewotCXN0cnVjdCBwYWdlICpoZWFkID0gY29tcG91 bmRfaGVhZChwYWdlKTsKLQlpZiAoV0FSTl9PTl9PTkNFKHBhZ2VfcmVmX2NvdW50KGhlYWQpIDwg MCkpCi0JCXJldHVybiBOVUxMOwotCWlmICh1bmxpa2VseSghcGFnZV9jYWNoZV9hZGRfc3BlY3Vs YXRpdmUoaGVhZCwgcmVmcykpKQotCQlyZXR1cm4gTlVMTDsKLQlyZXR1cm4gaGVhZDsKLX0KLQog I2lmZGVmIENPTkZJR19BUkNIX0hBU19QVEVfU1BFQ0lBTAogc3RhdGljIGludCBndXBfcHRlX3Jh bmdlKHBtZF90IHBtZCwgdW5zaWduZWQgbG9uZyBhZGRyLCB1bnNpZ25lZCBsb25nIGVuZCwKIAkJ CSB1bnNpZ25lZCBpbnQgZmxhZ3MsIHN0cnVjdCBwYWdlICoqcGFnZXMsIGludCAqbnIpCi0tIAoy LjI0LjAKCl9fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fCmRy aS1kZXZlbCBtYWlsaW5nIGxpc3QKZHJpLWRldmVsQGxpc3RzLmZyZWVkZXNrdG9wLm9yZwpodHRw czovL2xpc3RzLmZyZWVkZXNrdG9wLm9yZy9tYWlsbWFuL2xpc3RpbmZvL2RyaS1kZXZlbA== 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 B9A51C43141 for ; Mon, 25 Nov 2019 23:10:49 +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 9B9562075C for ; Mon, 25 Nov 2019 23:10:49 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 9B9562075C 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 EF9E66E0BB; Mon, 25 Nov 2019 23:10:46 +0000 (UTC) Received: from hqemgate14.nvidia.com (hqemgate14.nvidia.com [216.228.121.143]) by gabe.freedesktop.org (Postfix) with ESMTPS id 71F9389F4F for ; Mon, 25 Nov 2019 23:10:42 +0000 (UTC) Received: from hqpgpgate101.nvidia.com (Not Verified[216.228.121.13]) by hqemgate14.nvidia.com (using TLS: TLSv1.2, DES-CBC3-SHA) id ; Mon, 25 Nov 2019 15:10:45 -0800 Received: from hqmail.nvidia.com ([172.20.161.6]) by hqpgpgate101.nvidia.com (PGP Universal service); Mon, 25 Nov 2019 15:10:41 -0800 X-PGP-Universal: processed; by hqpgpgate101.nvidia.com on Mon, 25 Nov 2019 15:10:41 -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; Mon, 25 Nov 2019 23:10:41 +0000 Received: from rnnvemgw01.nvidia.com (10.128.109.123) by HQMAIL107.nvidia.com (172.20.187.13) with Microsoft SMTP Server (TLS) id 15.0.1473.3 via Frontend Transport; Mon, 25 Nov 2019 23:10:40 +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 15:10:40 -0800 From: John Hubbard To: Andrew Morton Subject: [PATCH v2 02/19] mm/gup: move try_get_compound_head() to top, fix minor issues Date: Mon, 25 Nov 2019 15:10:18 -0800 Message-ID: <20191125231035.1539120-3-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; a=rsa-sha256; c=relaxed/relaxed; d=nvidia.com; s=n1; t=1574723445; bh=JKnh6awNMnXx+WkfJCjCpP/dD2pEJJn8AxQ3IWMhLGw=; 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=jC5e+5MLgArfU4yAZ5yV9ldAgz3MPot067ia5Ad3y9iAeyRJ6biBbBLvf/PCDcKlv f1hQ/Ln1SJqFWNipjx8I53p+Zfbb+f0f+0eFPX72aFxcArDBJ+XixYQChzSWmvlesy zo9CRHKV/vec5N4ZMMXzd8ayG92YQVllNM7sho//6Ec10682q2fg0mU5Mju/dwYaDr hHve6RNDUVgJ0X9nqR4M0mmdpOLHFlyo03fMhDAsqenaBK2aq88Zkl6Xydt92kKAR+ HKDi4fAiVIqVBpx0TIMHJ1OOACPk0npNX4pp8Ht3TiYweUgnDO7YqKjqhzuNctmybO PDpR/Zsa9AFBQ== 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 , 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 , 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: <20191125231018.VMID39q2iES2B42j4vx0nRkkZp6rNsH9pxysalnIUwE@z> QW4gdXBjb21pbmcgcGF0Y2ggdXNlcyB0cnlfZ2V0X2NvbXBvdW5kX2hlYWQoKSBtb3JlIHdpZGVs eSwKc28gbW92ZSBpdCB0byB0aGUgdG9wIG9mIGd1cC5jLgoKQWxzbyBmaXggYSB0aW55IHNwZWxs aW5nIGVycm9yIGFuZCBhIGNoZWNrcGF0Y2gucGwgd2FybmluZy4KClJldmlld2VkLWJ5OiBDaHJp c3RvcGggSGVsbHdpZyA8aGNoQGxzdC5kZT4KUmV2aWV3ZWQtYnk6IEphbiBLYXJhIDxqYWNrQHN1 c2UuY3o+ClJldmlld2VkLWJ5OiBJcmEgV2VpbnkgPGlyYS53ZWlueUBpbnRlbC5jb20+ClNpZ25l ZC1vZmYtYnk6IEpvaG4gSHViYmFyZCA8amh1YmJhcmRAbnZpZGlhLmNvbT4KLS0tCiBtbS9ndXAu YyB8IDI5ICsrKysrKysrKysrKysrKy0tLS0tLS0tLS0tLS0tCiAxIGZpbGUgY2hhbmdlZCwgMTUg aW5zZXJ0aW9ucygrKSwgMTQgZGVsZXRpb25zKC0pCgpkaWZmIC0tZ2l0IGEvbW0vZ3VwLmMgYi9t bS9ndXAuYwppbmRleCBmNzY0NDMyOTE0YzQuLjNlY2NlMjk3YTQ3ZiAxMDA2NDQKLS0tIGEvbW0v Z3VwLmMKKysrIGIvbW0vZ3VwLmMKQEAgLTI5LDYgKzI5LDIxIEBAIHN0cnVjdCBmb2xsb3dfcGFn ZV9jb250ZXh0IHsKIAl1bnNpZ25lZCBpbnQgcGFnZV9tYXNrOwogfTsKIAorLyoKKyAqIFJldHVy biB0aGUgY29tcG91bmQgaGVhZCBwYWdlIHdpdGggcmVmIGFwcHJvcHJpYXRlbHkgaW5jcmVtZW50 ZWQsCisgKiBvciBOVUxMIGlmIHRoYXQgZmFpbGVkLgorICovCitzdGF0aWMgaW5saW5lIHN0cnVj dCBwYWdlICp0cnlfZ2V0X2NvbXBvdW5kX2hlYWQoc3RydWN0IHBhZ2UgKnBhZ2UsIGludCByZWZz KQoreworCXN0cnVjdCBwYWdlICpoZWFkID0gY29tcG91bmRfaGVhZChwYWdlKTsKKworCWlmIChX QVJOX09OX09OQ0UocGFnZV9yZWZfY291bnQoaGVhZCkgPCAwKSkKKwkJcmV0dXJuIE5VTEw7CisJ aWYgKHVubGlrZWx5KCFwYWdlX2NhY2hlX2FkZF9zcGVjdWxhdGl2ZShoZWFkLCByZWZzKSkpCisJ CXJldHVybiBOVUxMOworCXJldHVybiBoZWFkOworfQorCiAvKioKICAqIHB1dF91c2VyX3BhZ2Vz X2RpcnR5X2xvY2soKSAtIHJlbGVhc2UgYW5kIG9wdGlvbmFsbHkgZGlydHkgZ3VwLXBpbm5lZCBw YWdlcwogICogQHBhZ2VzOiAgYXJyYXkgb2YgcGFnZXMgdG8gYmUgbWF5YmUgbWFya2VkIGRpcnR5 LCBhbmQgZGVmaW5pdGVseSByZWxlYXNlZC4KQEAgLTE4MDcsMjAgKzE4MjIsNiBAQCBzdGF0aWMg dm9pZCBfX21heWJlX3VudXNlZCB1bmRvX2Rldl9wYWdlbWFwKGludCAqbnIsIGludCBucl9zdGFy dCwKIAl9CiB9CiAKLS8qCi0gKiBSZXR1cm4gdGhlIGNvbXB1bmQgaGVhZCBwYWdlIHdpdGggcmVm IGFwcHJvcHJpYXRlbHkgaW5jcmVtZW50ZWQsCi0gKiBvciBOVUxMIGlmIHRoYXQgZmFpbGVkLgot ICovCi1zdGF0aWMgaW5saW5lIHN0cnVjdCBwYWdlICp0cnlfZ2V0X2NvbXBvdW5kX2hlYWQoc3Ry dWN0IHBhZ2UgKnBhZ2UsIGludCByZWZzKQotewotCXN0cnVjdCBwYWdlICpoZWFkID0gY29tcG91 bmRfaGVhZChwYWdlKTsKLQlpZiAoV0FSTl9PTl9PTkNFKHBhZ2VfcmVmX2NvdW50KGhlYWQpIDwg MCkpCi0JCXJldHVybiBOVUxMOwotCWlmICh1bmxpa2VseSghcGFnZV9jYWNoZV9hZGRfc3BlY3Vs YXRpdmUoaGVhZCwgcmVmcykpKQotCQlyZXR1cm4gTlVMTDsKLQlyZXR1cm4gaGVhZDsKLX0KLQog I2lmZGVmIENPTkZJR19BUkNIX0hBU19QVEVfU1BFQ0lBTAogc3RhdGljIGludCBndXBfcHRlX3Jh bmdlKHBtZF90IHBtZCwgdW5zaWduZWQgbG9uZyBhZGRyLCB1bnNpZ25lZCBsb25nIGVuZCwKIAkJ CSB1bnNpZ25lZCBpbnQgZmxhZ3MsIHN0cnVjdCBwYWdlICoqcGFnZXMsIGludCAqbnIpCi0tIAoy LjI0LjAKCl9fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fCmRy aS1kZXZlbCBtYWlsaW5nIGxpc3QKZHJpLWRldmVsQGxpc3RzLmZyZWVkZXNrdG9wLm9yZwpodHRw czovL2xpc3RzLmZyZWVkZXNrdG9wLm9yZy9tYWlsbWFuL2xpc3RpbmZvL2RyaS1kZXZlbA==