From patchwork Sun May 14 21:26:58 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Lorenzo Stoakes X-Patchwork-Id: 13240586 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 022C0C7EE23 for ; Sun, 14 May 2023 21:27:33 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S238141AbjENV1c (ORCPT ); Sun, 14 May 2023 17:27:32 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:46352 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S237948AbjENV1M (ORCPT ); Sun, 14 May 2023 17:27:12 -0400 Received: from mail-wr1-x429.google.com (mail-wr1-x429.google.com [IPv6:2a00:1450:4864:20::429]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id B4D9A19AD; Sun, 14 May 2023 14:27:03 -0700 (PDT) Received: by mail-wr1-x429.google.com with SMTP id ffacd0b85a97d-3078fa679a7so8523692f8f.3; Sun, 14 May 2023 14:27:03 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20221208; t=1684099621; x=1686691621; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=8xqzyCEy7iofGcOYzYypeQYEUsssg0r/A+Ok0DOjdDs=; b=aoQGznX+L0dqapBQrZ7tkkNVdcbVvdSJlnUDKwjlWhMHJsKAuaUDUnJC42eQD2DeDX 34fO8/v7vg1LUopNvlyFJXzAO8PJUfjM3OQDqGW4BrssZLPdgbji8y3zkxIzTeu5JVw+ FV+CRnz59VmbrLGfyt4pGVm2hqrgAeBWO/vmr91k4swlQ7b3D85FRtZxbGcfBOxjKMkn d6RdWLeX4B78nbG17RhE7r0ymv0s8n0GnnM29Du5pRxfNwNAvV4LSbovqFC2br4iXOY0 F6V6C6RK12INseuaPzDfQvZ3a4AIEsBo87ya77kVsQ2VR2mFMjFu/AjnVpJftddk4v0z Z6og== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1684099621; x=1686691621; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=8xqzyCEy7iofGcOYzYypeQYEUsssg0r/A+Ok0DOjdDs=; b=lFPxqYFhqRmXmHyxFo1K79Im/VS+q/fEoZ5QLhBd8ubvmulMcRRY3TROkfuP36RUbG +xr6uO8zZyWa3wftZGc7b7qkFeh/hz6jQrnf5NbtDeNEdCQXWIE6ulFOT79a3dce+nJo LsHXiUElyvuGkjkKicUIYG1z4Gwu8ITuttliRA0GU51a2B3wwizQqdKKK5I9VMs2bAhY qsfopKL6Yp1fu27bg+kzWiAlIEpR8lTxLMlTSyoW26bbAGlYUoUnzac8yu7sTYs2CghT /TvCPBtgLfLq3LahxojvzxcBE+8LSssNXH9D1ICHCp5Pn/MlrHV9AiNuK6cE4EZHEl4x dX5Q== X-Gm-Message-State: AC+VfDwwGJrQ+ICIo7LvTd8n1kKFZL3AKANYJMQZoOuWEjGtmwPmZA/e HDyTUMBMhgqFctQB/3Z2IrY= X-Google-Smtp-Source: ACHHUZ6PRLUWV/JXBbb+jR9+33X81exRRn6i14eei9wAVcEb3WES66stfPnuGtQX6n6Zzc9+QFQNkQ== X-Received: by 2002:adf:ec45:0:b0:306:3f97:4847 with SMTP id w5-20020adfec45000000b003063f974847mr21210684wrn.65.1684099621384; Sun, 14 May 2023 14:27:01 -0700 (PDT) Received: from lucifer.home ([2a00:23c5:dc8c:8701:1663:9a35:5a7b:1d76]) by smtp.googlemail.com with ESMTPSA id d18-20020adfe852000000b002fe13ec49fasm30174117wrn.98.2023.05.14.14.26.59 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 14 May 2023 14:27:00 -0700 (PDT) From: Lorenzo Stoakes To: linux-mm@kvack.org, linux-kernel@vger.kernel.org, Andrew Morton Cc: Matthew Wilcox , David Hildenbrand , Michael Ellerman , Nicholas Piggin , Christophe Leroy , Dennis Dalessandro , Jason Gunthorpe , Leon Romanovsky , Christian Benvenuti , Nelson Escobar , Bernard Metzler , Mauro Carvalho Chehab , "Michael S . Tsirkin" , Jason Wang , Jens Axboe , Pavel Begunkov , Bjorn Topel , Magnus Karlsson , Maciej Fijalkowski , Jonathan Lemon , "David S . Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Alexei Starovoitov , Daniel Borkmann , Jesper Dangaard Brouer , John Fastabend , linuxppc-dev@lists.ozlabs.org, linux-rdma@vger.kernel.org, linux-media@vger.kernel.org, virtualization@lists.linux-foundation.org, kvm@vger.kernel.org, netdev@vger.kernel.org, io-uring@vger.kernel.org, bpf@vger.kernel.org, John Hubbard , Lorenzo Stoakes Subject: [PATCH v5 5/6] mm/gup: remove vmas parameter from pin_user_pages() Date: Sun, 14 May 2023 22:26:58 +0100 Message-Id: X-Mailer: git-send-email 2.40.1 In-Reply-To: References: MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org We are now in a position where no caller of pin_user_pages() requires the vmas parameter at all, so eliminate this parameter from the function and all callers. This clears the way to removing the vmas parameter from GUP altogether. Acked-by: David Hildenbrand Acked-by: Dennis Dalessandro (for qib) Signed-off-by: Lorenzo Stoakes Reviewed-by: Christoph Hellwig Acked-by: Sakari Ailus # drivers/media --- arch/powerpc/mm/book3s64/iommu_api.c | 2 +- drivers/infiniband/hw/qib/qib_user_pages.c | 2 +- drivers/infiniband/hw/usnic/usnic_uiom.c | 2 +- drivers/infiniband/sw/siw/siw_mem.c | 2 +- drivers/media/v4l2-core/videobuf-dma-sg.c | 2 +- drivers/vdpa/vdpa_user/vduse_dev.c | 2 +- drivers/vhost/vdpa.c | 2 +- include/linux/mm.h | 3 +-- io_uring/rsrc.c | 2 +- mm/gup.c | 9 +++------ mm/gup_test.c | 9 ++++----- net/xdp/xdp_umem.c | 2 +- 12 files changed, 17 insertions(+), 22 deletions(-) diff --git a/arch/powerpc/mm/book3s64/iommu_api.c b/arch/powerpc/mm/book3s64/iommu_api.c index 81d7185e2ae8..d19fb1f3007d 100644 --- a/arch/powerpc/mm/book3s64/iommu_api.c +++ b/arch/powerpc/mm/book3s64/iommu_api.c @@ -105,7 +105,7 @@ static long mm_iommu_do_alloc(struct mm_struct *mm, unsigned long ua, ret = pin_user_pages(ua + (entry << PAGE_SHIFT), n, FOLL_WRITE | FOLL_LONGTERM, - mem->hpages + entry, NULL); + mem->hpages + entry); if (ret == n) { pinned += n; continue; diff --git a/drivers/infiniband/hw/qib/qib_user_pages.c b/drivers/infiniband/hw/qib/qib_user_pages.c index f693bc753b6b..1bb7507325bc 100644 --- a/drivers/infiniband/hw/qib/qib_user_pages.c +++ b/drivers/infiniband/hw/qib/qib_user_pages.c @@ -111,7 +111,7 @@ int qib_get_user_pages(unsigned long start_page, size_t num_pages, ret = pin_user_pages(start_page + got * PAGE_SIZE, num_pages - got, FOLL_LONGTERM | FOLL_WRITE, - p + got, NULL); + p + got); if (ret < 0) { mmap_read_unlock(current->mm); goto bail_release; diff --git a/drivers/infiniband/hw/usnic/usnic_uiom.c b/drivers/infiniband/hw/usnic/usnic_uiom.c index 2a5cac2658ec..84e0f41e7dfa 100644 --- a/drivers/infiniband/hw/usnic/usnic_uiom.c +++ b/drivers/infiniband/hw/usnic/usnic_uiom.c @@ -140,7 +140,7 @@ static int usnic_uiom_get_pages(unsigned long addr, size_t size, int writable, ret = pin_user_pages(cur_base, min_t(unsigned long, npages, PAGE_SIZE / sizeof(struct page *)), - gup_flags, page_list, NULL); + gup_flags, page_list); if (ret < 0) goto out; diff --git a/drivers/infiniband/sw/siw/siw_mem.c b/drivers/infiniband/sw/siw/siw_mem.c index f51ab2ccf151..e6e25f15567d 100644 --- a/drivers/infiniband/sw/siw/siw_mem.c +++ b/drivers/infiniband/sw/siw/siw_mem.c @@ -422,7 +422,7 @@ struct siw_umem *siw_umem_get(u64 start, u64 len, bool writable) umem->page_chunk[i].plist = plist; while (nents) { rv = pin_user_pages(first_page_va, nents, foll_flags, - plist, NULL); + plist); if (rv < 0) goto out_sem_up; diff --git a/drivers/media/v4l2-core/videobuf-dma-sg.c b/drivers/media/v4l2-core/videobuf-dma-sg.c index 53001532e8e3..405b89ea1054 100644 --- a/drivers/media/v4l2-core/videobuf-dma-sg.c +++ b/drivers/media/v4l2-core/videobuf-dma-sg.c @@ -180,7 +180,7 @@ static int videobuf_dma_init_user_locked(struct videobuf_dmabuf *dma, data, size, dma->nr_pages); err = pin_user_pages(data & PAGE_MASK, dma->nr_pages, gup_flags, - dma->pages, NULL); + dma->pages); if (err != dma->nr_pages) { dma->nr_pages = (err >= 0) ? err : 0; diff --git a/drivers/vdpa/vdpa_user/vduse_dev.c b/drivers/vdpa/vdpa_user/vduse_dev.c index de97e38c3b82..4d4405f058e8 100644 --- a/drivers/vdpa/vdpa_user/vduse_dev.c +++ b/drivers/vdpa/vdpa_user/vduse_dev.c @@ -1052,7 +1052,7 @@ static int vduse_dev_reg_umem(struct vduse_dev *dev, goto out; pinned = pin_user_pages(uaddr, npages, FOLL_LONGTERM | FOLL_WRITE, - page_list, NULL); + page_list); if (pinned != npages) { ret = pinned < 0 ? pinned : -ENOMEM; goto out; diff --git a/drivers/vhost/vdpa.c b/drivers/vhost/vdpa.c index 8c1aefc865f0..61223fcbe82b 100644 --- a/drivers/vhost/vdpa.c +++ b/drivers/vhost/vdpa.c @@ -983,7 +983,7 @@ static int vhost_vdpa_pa_map(struct vhost_vdpa *v, while (npages) { sz2pin = min_t(unsigned long, npages, list_size); pinned = pin_user_pages(cur_base, sz2pin, - gup_flags, page_list, NULL); + gup_flags, page_list); if (sz2pin != pinned) { if (pinned < 0) { ret = pinned; diff --git a/include/linux/mm.h b/include/linux/mm.h index 679b41ef7a6d..db09c7062965 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -2412,8 +2412,7 @@ static inline struct page *get_user_page_vma_remote(struct mm_struct *mm, long get_user_pages(unsigned long start, unsigned long nr_pages, unsigned int gup_flags, struct page **pages); long pin_user_pages(unsigned long start, unsigned long nr_pages, - unsigned int gup_flags, struct page **pages, - struct vm_area_struct **vmas); + unsigned int gup_flags, struct page **pages); long get_user_pages_unlocked(unsigned long start, unsigned long nr_pages, struct page **pages, unsigned int gup_flags); long pin_user_pages_unlocked(unsigned long start, unsigned long nr_pages, diff --git a/io_uring/rsrc.c b/io_uring/rsrc.c index b6451f8bc5d5..b56bda46a9eb 100644 --- a/io_uring/rsrc.c +++ b/io_uring/rsrc.c @@ -1044,7 +1044,7 @@ struct page **io_pin_pages(unsigned long ubuf, unsigned long len, int *npages) ret = 0; mmap_read_lock(current->mm); pret = pin_user_pages(ubuf, nr_pages, FOLL_WRITE | FOLL_LONGTERM, - pages, NULL); + pages); if (pret == nr_pages) *npages = nr_pages; else diff --git a/mm/gup.c b/mm/gup.c index 1493cc8dd526..36701b5f0123 100644 --- a/mm/gup.c +++ b/mm/gup.c @@ -3274,8 +3274,6 @@ EXPORT_SYMBOL(pin_user_pages_remote); * @gup_flags: flags modifying lookup behaviour * @pages: array that receives pointers to the pages pinned. * Should be at least nr_pages long. - * @vmas: array of pointers to vmas corresponding to each page. - * Or NULL if the caller does not require them. * * Nearly the same as get_user_pages(), except that FOLL_TOUCH is not set, and * FOLL_PIN is set. @@ -3284,15 +3282,14 @@ EXPORT_SYMBOL(pin_user_pages_remote); * see Documentation/core-api/pin_user_pages.rst for details. */ long pin_user_pages(unsigned long start, unsigned long nr_pages, - unsigned int gup_flags, struct page **pages, - struct vm_area_struct **vmas) + unsigned int gup_flags, struct page **pages) { int locked = 1; - if (!is_valid_gup_args(pages, vmas, NULL, &gup_flags, FOLL_PIN)) + if (!is_valid_gup_args(pages, NULL, NULL, &gup_flags, FOLL_PIN)) return 0; return __gup_longterm_locked(current->mm, start, nr_pages, - pages, vmas, &locked, gup_flags); + pages, NULL, &locked, gup_flags); } EXPORT_SYMBOL(pin_user_pages); diff --git a/mm/gup_test.c b/mm/gup_test.c index 9ba8ea23f84e..1668ce0e0783 100644 --- a/mm/gup_test.c +++ b/mm/gup_test.c @@ -146,18 +146,17 @@ static int __gup_test_ioctl(unsigned int cmd, pages + i); break; case PIN_BASIC_TEST: - nr = pin_user_pages(addr, nr, gup->gup_flags, pages + i, - NULL); + nr = pin_user_pages(addr, nr, gup->gup_flags, pages + i); break; case PIN_LONGTERM_BENCHMARK: nr = pin_user_pages(addr, nr, gup->gup_flags | FOLL_LONGTERM, - pages + i, NULL); + pages + i); break; case DUMP_USER_PAGES_TEST: if (gup->test_flags & GUP_TEST_FLAG_DUMP_PAGES_USE_PIN) nr = pin_user_pages(addr, nr, gup->gup_flags, - pages + i, NULL); + pages + i); else nr = get_user_pages(addr, nr, gup->gup_flags, pages + i); @@ -270,7 +269,7 @@ static inline int pin_longterm_test_start(unsigned long arg) gup_flags, pages); else cur_pages = pin_user_pages(addr, remaining_pages, - gup_flags, pages, NULL); + gup_flags, pages); if (cur_pages < 0) { pin_longterm_test_stop(); ret = cur_pages; diff --git a/net/xdp/xdp_umem.c b/net/xdp/xdp_umem.c index 02207e852d79..06cead2b8e34 100644 --- a/net/xdp/xdp_umem.c +++ b/net/xdp/xdp_umem.c @@ -103,7 +103,7 @@ static int xdp_umem_pin_pages(struct xdp_umem *umem, unsigned long address) mmap_read_lock(current->mm); npgs = pin_user_pages(address, umem->npgs, - gup_flags | FOLL_LONGTERM, &umem->pgs[0], NULL); + gup_flags | FOLL_LONGTERM, &umem->pgs[0]); mmap_read_unlock(current->mm); if (npgs != umem->npgs) {