From patchwork Fri Aug 2 02:19:31 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: 11071733 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 784FB13AC for ; Fri, 2 Aug 2019 02:20:15 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 695D1287BE for ; Fri, 2 Aug 2019 02:20:15 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 5C8BC287CC; Fri, 2 Aug 2019 02:20:15 +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=-8.0 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FROM,MAILING_LIST_MULTI,RCVD_IN_DNSWL_HI autolearn=unavailable version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id BECDC287C6 for ; Fri, 2 Aug 2019 02:20:14 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731662AbfHBCUO (ORCPT ); Thu, 1 Aug 2019 22:20:14 -0400 Received: from mail-pg1-f193.google.com ([209.85.215.193]:44544 "EHLO mail-pg1-f193.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726796AbfHBCUN (ORCPT ); Thu, 1 Aug 2019 22:20:13 -0400 Received: by mail-pg1-f193.google.com with SMTP id i18so35236564pgl.11; Thu, 01 Aug 2019 19:20:12 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=3GzlMAdD/Fj4tpT1z/PK8Fr3raamoGX6ZwkHP2yb6K8=; b=WgvMYxfgb6Molfspondn33ZYB1WcvyhUHuuLQJHqj92K0W/u5k0B5ZQj1BN5Ns2IZE M0GWxKjoZrIPc//wnMwUJTmV5TMSYpm02fQgVP/BH2szNXvyzzeOa5FiDRKrjlN3+luO 9Jy7V18qn+4b0ojFo/dXh7wBvGZvx4G8yqL9GdVH2uaO753yJYW/vuKj6Ghg+xpVFc5A N5wBHvH3PD3PXLn+hz8omKP+6e2hjXrqsj1JOQPHhNWSLJbaM8A5usTldb4lWZTBhIo0 mLxHVdEO0uyXR6yvbfmKtCZaa5xv6j5LsvjMwT4z5+CpizIhX6UVhXHqVJggfrPMULjn H4uA== 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:mime-version :content-transfer-encoding; bh=3GzlMAdD/Fj4tpT1z/PK8Fr3raamoGX6ZwkHP2yb6K8=; b=peF76MfVhMgEz16x/6nIWyY11lhL2V4a4UcgfHUcR3EXAVwYsXVC2QFEXGjRtMbhmN rql/yKhbFXQjAOOz/ZNuTZHbE0tYINijZg9S2wNbh2qLdszeUoMPgDRsXOIRT9XsEFn8 lcvilgKRgPLul7V+qy8vJvbiAeH5g+FSbC3AufBB0cW7GIg1ANnKZIS3tY6+jxzOKlO7 BP79jKglv+1rjWnfxfFkiw2SLcP2GAKwFURwhs/+8BdJRkOuBZd8NP351rNP983B9kAK rUbMQVqhq6s0XuYddnsDxGx8YZ8lSFrMxGjYkT4Lw6eQ4teaReZYGHPC+POTmAI5HWYN 1SLw== X-Gm-Message-State: APjAAAUTfYu0bh9kprF1kTfeCNCmnX/4aynIaNuecXZ94uggYke+P5xo fdMnkFxOlhLnvsVM+p6wA/w= X-Google-Smtp-Source: APXvYqxheUI3U4eMXPfQOAu0iMAgy84p0nt5Unb4jdDMlWNxu88KGGVSWktP7DU/iS6MqE4v20pMKQ== X-Received: by 2002:a63:550d:: with SMTP id j13mr59450607pgb.173.1564712411856; Thu, 01 Aug 2019 19:20:11 -0700 (PDT) Received: from blueforge.nvidia.com (searspoint.nvidia.com. [216.228.112.21]) by smtp.gmail.com with ESMTPSA id u9sm38179744pgc.5.2019.08.01.19.20.10 (version=TLS1_3 cipher=AEAD-AES256-GCM-SHA384 bits=256/256); Thu, 01 Aug 2019 19:20:11 -0700 (PDT) From: john.hubbard@gmail.com X-Google-Original-From: jhubbard@nvidia.com To: Andrew Morton Cc: Christoph Hellwig , Dan Williams , Dave Chinner , Dave Hansen , Ira Weiny , Jan Kara , Jason Gunthorpe , =?utf-8?b?SsOpcsO0?= =?utf-8?b?bWUgR2xpc3Nl?= , LKML , amd-gfx@lists.freedesktop.org, ceph-devel@vger.kernel.org, devel@driverdev.osuosl.org, devel@lists.orangefs.org, dri-devel@lists.freedesktop.org, intel-gfx@lists.freedesktop.org, kvm@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-block@vger.kernel.org, linux-crypto@vger.kernel.org, linux-fbdev@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-media@vger.kernel.org, linux-mm@kvack.org, linux-nfs@vger.kernel.org, linux-rdma@vger.kernel.org, linux-rpi-kernel@lists.infradead.org, linux-xfs@vger.kernel.org, netdev@vger.kernel.org, rds-devel@oss.oracle.com, sparclinux@vger.kernel.org, x86@kernel.org, xen-devel@lists.xenproject.org, John Hubbard Subject: [PATCH 00/34] put_user_pages(): miscellaneous call sites Date: Thu, 1 Aug 2019 19:19:31 -0700 Message-Id: <20190802022005.5117-1-jhubbard@nvidia.com> X-Mailer: git-send-email 2.22.0 MIME-Version: 1.0 X-NVConfidentiality: public Sender: linux-xfs-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-xfs@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP From: John Hubbard Hi, These are best characterized as miscellaneous conversions: many (not all) call sites that don't involve biovec or iov_iter, nor mm/. It also leaves out a few call sites that require some more work. These are mostly pretty simple ones. It's probably best to send all of these via Andrew's -mm tree, assuming that there are no significant merge conflicts with ongoing work in other trees (which I doubt, given that these are small changes). These patches apply to the latest linux.git. Patch #1 is also already in Andrew's tree, but given the broad non-linux-mm Cc list, I thought it would be more convenient to just include that patch here, so that people can use linux.git as the base--even though these are probably destined for linux-mm. This is part a tree-wide conversion, as described in commit fc1d8e7cca2d ("mm: introduce put_user_page*(), placeholder versions"). That commit has an extensive description of the problem and the planned steps to solve it, but the highlites are: 1) Provide put_user_page*() routines, intended to be used for releasing pages that were pinned via get_user_pages*(). 2) Convert all of the call sites for get_user_pages*(), to invoke put_user_page*(), instead of put_page(). This involves dozens of call sites, and will take some time. 3) After (2) is complete, use get_user_pages*() and put_user_page*() to implement tracking of these pages. This tracking will be separate from the existing struct page refcounting. 4) Use the tracking and identification of these pages, to implement special handling (especially in writeback paths) when the pages are backed by a filesystem. And a few references, also from that commit: [1] https://lwn.net/Articles/774411/ : "DMA and get_user_pages()" [2] https://lwn.net/Articles/753027/ : "The Trouble with get_user_pages()" Ira Weiny (1): fs/binfmt_elf: convert put_page() to put_user_page*() John Hubbard (33): mm/gup: add make_dirty arg to put_user_pages_dirty_lock() net/rds: convert put_page() to put_user_page*() net/ceph: convert put_page() to put_user_page*() x86/kvm: convert put_page() to put_user_page*() drm/etnaviv: convert release_pages() to put_user_pages() drm/i915: convert put_page() to put_user_page*() drm/radeon: convert put_page() to put_user_page*() media/ivtv: convert put_page() to put_user_page*() media/v4l2-core/mm: convert put_page() to put_user_page*() genwqe: convert put_page() to put_user_page*() scif: convert put_page() to put_user_page*() vmci: convert put_page() to put_user_page*() rapidio: convert put_page() to put_user_page*() oradax: convert put_page() to put_user_page*() staging/vc04_services: convert put_page() to put_user_page*() drivers/tee: convert put_page() to put_user_page*() vfio: convert put_page() to put_user_page*() fbdev/pvr2fb: convert put_page() to put_user_page*() fsl_hypervisor: convert put_page() to put_user_page*() xen: convert put_page() to put_user_page*() fs/exec.c: convert put_page() to put_user_page*() orangefs: convert put_page() to put_user_page*() uprobes: convert put_page() to put_user_page*() futex: convert put_page() to put_user_page*() mm/frame_vector.c: convert put_page() to put_user_page*() mm/gup_benchmark.c: convert put_page() to put_user_page*() mm/memory.c: convert put_page() to put_user_page*() mm/madvise.c: convert put_page() to put_user_page*() mm/process_vm_access.c: convert put_page() to put_user_page*() crypt: convert put_page() to put_user_page*() nfs: convert put_page() to put_user_page*() goldfish_pipe: convert put_page() to put_user_page*() kernel/events/core.c: convert put_page() to put_user_page*() arch/x86/kvm/svm.c | 4 +- crypto/af_alg.c | 7 +- drivers/gpu/drm/etnaviv/etnaviv_gem.c | 4 +- drivers/gpu/drm/i915/gem/i915_gem_userptr.c | 9 +- drivers/gpu/drm/radeon/radeon_ttm.c | 2 +- drivers/infiniband/core/umem.c | 5 +- drivers/infiniband/hw/hfi1/user_pages.c | 5 +- drivers/infiniband/hw/qib/qib_user_pages.c | 5 +- drivers/infiniband/hw/usnic/usnic_uiom.c | 5 +- drivers/infiniband/sw/siw/siw_mem.c | 10 +- drivers/media/pci/ivtv/ivtv-udma.c | 14 +-- drivers/media/pci/ivtv/ivtv-yuv.c | 10 +- drivers/media/v4l2-core/videobuf-dma-sg.c | 3 +- drivers/misc/genwqe/card_utils.c | 17 +-- drivers/misc/mic/scif/scif_rma.c | 17 ++- drivers/misc/vmw_vmci/vmci_context.c | 2 +- drivers/misc/vmw_vmci/vmci_queue_pair.c | 11 +- drivers/platform/goldfish/goldfish_pipe.c | 9 +- drivers/rapidio/devices/rio_mport_cdev.c | 9 +- drivers/sbus/char/oradax.c | 2 +- .../interface/vchiq_arm/vchiq_2835_arm.c | 10 +- drivers/tee/tee_shm.c | 10 +- drivers/vfio/vfio_iommu_type1.c | 8 +- drivers/video/fbdev/pvr2fb.c | 3 +- drivers/virt/fsl_hypervisor.c | 7 +- drivers/xen/gntdev.c | 5 +- drivers/xen/privcmd.c | 7 +- fs/binfmt_elf.c | 2 +- fs/binfmt_elf_fdpic.c | 2 +- fs/exec.c | 2 +- fs/nfs/direct.c | 4 +- fs/orangefs/orangefs-bufmap.c | 7 +- include/linux/mm.h | 5 +- kernel/events/core.c | 2 +- kernel/events/uprobes.c | 6 +- kernel/futex.c | 10 +- mm/frame_vector.c | 4 +- mm/gup.c | 115 ++++++++---------- mm/gup_benchmark.c | 2 +- mm/madvise.c | 2 +- mm/memory.c | 2 +- mm/process_vm_access.c | 18 +-- net/ceph/pagevec.c | 8 +- net/rds/info.c | 5 +- net/rds/message.c | 2 +- net/rds/rdma.c | 15 ++- virt/kvm/kvm_main.c | 4 +- 47 files changed, 151 insertions(+), 266 deletions(-)