From patchwork Fri Aug 2 02:20:03 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: john.hubbard@gmail.com X-Patchwork-Id: 11072889 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 539DE1395 for ; Fri, 2 Aug 2019 08:19:41 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 41A5E287C2 for ; Fri, 2 Aug 2019 08:19:41 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 351BB287D4; Fri, 2 Aug 2019 08:19:41 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-5.2 required=2.0 tests=BAYES_00,DKIM_ADSP_CUSTOM_MED, FREEMAIL_FROM,MAILING_LIST_MULTI,RCVD_IN_DNSWL_MED autolearn=unavailable version=3.3.1 Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 48A09287DA for ; Fri, 2 Aug 2019 08:19:40 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 2D7446ED08; Fri, 2 Aug 2019 08:19:15 +0000 (UTC) X-Original-To: dri-devel@lists.freedesktop.org Delivered-To: dri-devel@lists.freedesktop.org Received: from mail-pl1-x641.google.com (mail-pl1-x641.google.com [IPv6:2607:f8b0:4864:20::641]) by gabe.freedesktop.org (Postfix) with ESMTPS id 585826E861; Fri, 2 Aug 2019 02:21:02 +0000 (UTC) Received: by mail-pl1-x641.google.com with SMTP id w24so33012385plp.2; Thu, 01 Aug 2019 19:21:02 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=t4E5L+nteFApbv8x9BTzZhAA9CrCHyfc4N+4wDD55sE=; b=Dyyey+FT+wA+ywyMUkr9Epclm5M7ETMksVM1FBDCFW2J0SRgNq1kItE13jw5fuC7Zc M+GtrlazU3Krqp20RQkVakr10x9ouphXtJ7tm2D4vQHYVaeMzlBD5dfasawDVcdZhBOp xoLZDf540CxHDGwrkC0lbpKiHnajB0BKN7q1BKtnMZ/2kyX01b37iD7SEHF7a2vjoSek rZ31+Qjk2Ny6h2jJeu0DtyJUF3sZqFC2cbhOOGf0Pjlbvolz3CPkG8Omgy8JAVGigW9Z RN/R/VCrbq8EOMx4lbo4mS3JdXgtwxmcINhoR5Gcb43NS4r3MinnQdpQ6ww+1xQoECZ+ Lw1Q== X-Gm-Message-State: APjAAAWEKu4/2pTJlPcBYz6u38hw+vDVapu7SuvRupsBFJhGjKkxK2dE 5iByATzEAhgu/L9lDVnBStA= X-Google-Smtp-Source: APXvYqwMLKf8AGC5hDWCQUPLqudyxsaLfy2JXIWmRI5mzRP+HqysSD+VYVGt/11B9bnV5geCVBXglQ== X-Received: by 2002:a17:902:20ec:: with SMTP id v41mr122012162plg.142.1564712462015; Thu, 01 Aug 2019 19:21:02 -0700 (PDT) Received: from blueforge.nvidia.com (searspoint.nvidia.com. [216.228.112.21]) by smtp.gmail.com with ESMTPSA id u9sm38179744pgc.5.2019.08.01.19.21.00 (version=TLS1_3 cipher=AEAD-AES256-GCM-SHA384 bits=256/256); Thu, 01 Aug 2019 19:21:01 -0700 (PDT) From: john.hubbard@gmail.com X-Google-Original-From: jhubbard@nvidia.com To: Andrew Morton Subject: [PATCH 32/34] goldfish_pipe: convert put_page() to put_user_page*() Date: Thu, 1 Aug 2019 19:20:03 -0700 Message-Id: <20190802022005.5117-33-jhubbard@nvidia.com> X-Mailer: git-send-email 2.22.0 In-Reply-To: <20190802022005.5117-1-jhubbard@nvidia.com> References: <20190802022005.5117-1-jhubbard@nvidia.com> MIME-Version: 1.0 X-NVConfidentiality: public X-Mailman-Approved-At: Fri, 02 Aug 2019 08:19:03 +0000 X-Mailman-Original-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=t4E5L+nteFApbv8x9BTzZhAA9CrCHyfc4N+4wDD55sE=; b=hrmJ0pEUxxlEVbmnkJiCuXB+z0obVkpM5OAxcIB8ex62qKsRGc8GrJbesoMFhr0ezJ BB7gqJEvJ/0j1sMNBYjptk6WEDqh/SuRhAh3YnXCDA+D03E9VD/w0ZTpWsRp/gFtvqDb GPSJBQRO2YGZ2n4ciW9tAFCe3EDjB9OuDXHwxqBfuLFzCDYC5sbEZNesZN0XL0xy/T+d A/rrSMYh6KaPOeAYQGAhhvKvLVo5NyuQKSBc7dnWcPrp/sW9C+D3tHmYcyJ9WgLD0vU4 zE+pn4brWMiLPK0lo9h6ZHMbPaOqGStN6e8qWC9iDeImsGRohVaoMFw5HAYT+EunHz7d Gu7A== 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: linux-fbdev@vger.kernel.org, Jan Kara , kvm@vger.kernel.org, Dave Hansen , Dave Chinner , dri-devel@lists.freedesktop.org, linux-mm@kvack.org, sparclinux@vger.kernel.org, Ira Weiny , ceph-devel@vger.kernel.org, devel@driverdev.osuosl.org, rds-devel@oss.oracle.com, linux-rdma@vger.kernel.org, x86@kernel.org, amd-gfx@lists.freedesktop.org, Christoph Hellwig , Jason Gunthorpe , Roman Kiryanov , xen-devel@lists.xenproject.org, devel@lists.orangefs.org, linux-media@vger.kernel.org, John Hubbard , intel-gfx@lists.freedesktop.org, linux-block@vger.kernel.org, =?utf-8?b?SsOpcsO0bWUgR2xpc3Nl?= , linux-rpi-kernel@lists.infradead.org, Dan Williams , linux-arm-kernel@lists.infradead.org, linux-nfs@vger.kernel.org, netdev@vger.kernel.org, LKML , linux-xfs@vger.kernel.org, linux-crypto@vger.kernel.org, Greg Kroah-Hartman , linux-fsdevel@vger.kernel.org Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" X-Virus-Scanned: ClamAV using ClamSMTP From: John Hubbard For pages that were retained via get_user_pages*(), release those pages via the new put_user_page*() routines, instead of via put_page() or release_pages(). This is part a tree-wide conversion, as described in commit fc1d8e7cca2d ("mm: introduce put_user_page*(), placeholder versions"). Note that this effectively changes the code's behavior in qp_release_pages(): it now ultimately calls set_page_dirty_lock(), instead of set_page_dirty(). This is probably more accurate. As Christophe 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: Greg Kroah-Hartman Cc: Roman Kiryanov Signed-off-by: John Hubbard --- drivers/platform/goldfish/goldfish_pipe.c | 9 +++------ 1 file changed, 3 insertions(+), 6 deletions(-) diff --git a/drivers/platform/goldfish/goldfish_pipe.c b/drivers/platform/goldfish/goldfish_pipe.c index cef0133aa47a..2bd21020e288 100644 --- a/drivers/platform/goldfish/goldfish_pipe.c +++ b/drivers/platform/goldfish/goldfish_pipe.c @@ -288,15 +288,12 @@ static int pin_user_pages(unsigned long first_page, static void release_user_pages(struct page **pages, int pages_count, int is_write, s32 consumed_size) { - int i; + bool dirty = !is_write && consumed_size > 0; - for (i = 0; i < pages_count; i++) { - if (!is_write && consumed_size > 0) - set_page_dirty(pages[i]); - put_page(pages[i]); - } + put_user_pages_dirty_lock(pages, pages_count, dirty); } + /* Populate the call parameters, merging adjacent pages together */ static void populate_rw_params(struct page **pages, int pages_count,