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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 7C5F6C7EE23 for ; Wed, 17 May 2023 20:32:45 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229572AbjEQUco (ORCPT ); Wed, 17 May 2023 16:32:44 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:58012 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229611AbjEQUcn (ORCPT ); Wed, 17 May 2023 16:32:43 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [IPv6:2604:1380:4641:c500::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id B420599 for ; Wed, 17 May 2023 13:32:16 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id E1BEF61574 for ; Wed, 17 May 2023 20:32:08 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 422E2C433D2; Wed, 17 May 2023 20:32:08 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linux-foundation.org; s=korg; t=1684355528; bh=7Gwitmuh3d9rd+cmi/Z4ENuccLX4avwm7US002IC6nw=; h=Date:To:From:Subject:From; b=bHdU5jTuGgLe5tncfPTOpF+/lXc8VaWglu7gPwHLHFF/q29jlPjkFpwZ2QvyvGuyF xXobxeMhCr6AfDCjkSLC5M5iIqWLR4nrf7xHen5DkHK9WWDursTYQ8h5c6jJ8xvM7v 0jFg4GKsODzsacxcYoEXt7Z847Vq6lkShiqwTWGw= Date: Wed, 17 May 2023 13:32:07 -0700 To: mm-commits@vger.kernel.org, sakari.ailus@linux.intel.com, hch@lst.de, dennis.dalessandro@cornelisnetworks.com, david@redhat.com, lstoakes@gmail.com, akpm@linux-foundation.org From: Andrew Morton Subject: + mm-gup-remove-vmas-parameter-from-pin_user_pages.patch added to mm-unstable branch Message-Id: <20230517203208.422E2C433D2@smtp.kernel.org> Precedence: bulk Reply-To: linux-kernel@vger.kernel.org List-ID: X-Mailing-List: mm-commits@vger.kernel.org The patch titled Subject: mm/gup: remove vmas parameter from pin_user_pages() has been added to the -mm mm-unstable branch. Its filename is mm-gup-remove-vmas-parameter-from-pin_user_pages.patch This patch will shortly appear at https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/mm-gup-remove-vmas-parameter-from-pin_user_pages.patch This patch will later appear in the mm-unstable branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm Before you just go and hit "reply", please: a) Consider who else should be cc'ed b) Prefer to cc a suitable mailing list as well c) Ideally: find the original patch on the mailing list and do a reply-to-all to that, adding suitable additional cc's *** Remember to use Documentation/process/submit-checklist.rst when testing your code *** The -mm tree is included into linux-next via the mm-everything branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm and is updated there every 2-3 working days ------------------------------------------------------ From: Lorenzo Stoakes Subject: mm/gup: remove vmas parameter from pin_user_pages() Date: Wed, 17 May 2023 20:25:45 +0100 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. Link: https://lkml.kernel.org/r/195a99ae949c9f5cb589d2222b736ced96ec199a.1684350871.git.lstoakes@gmail.com Signed-off-by: Lorenzo Stoakes Acked-by: David Hildenbrand Acked-by: Dennis Dalessandro (for qib) Reviewed-by: Christoph Hellwig Acked-by: Sakari Ailus (for drivers/media) Signed-off-by: Andrew Morton --- 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(-) --- a/arch/powerpc/mm/book3s64/iommu_api.c~mm-gup-remove-vmas-parameter-from-pin_user_pages +++ a/arch/powerpc/mm/book3s64/iommu_api.c @@ -105,7 +105,7 @@ static long mm_iommu_do_alloc(struct mm_ 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; --- a/drivers/infiniband/hw/qib/qib_user_pages.c~mm-gup-remove-vmas-parameter-from-pin_user_pages +++ a/drivers/infiniband/hw/qib/qib_user_pages.c @@ -111,7 +111,7 @@ int qib_get_user_pages(unsigned long sta 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; --- a/drivers/infiniband/hw/usnic/usnic_uiom.c~mm-gup-remove-vmas-parameter-from-pin_user_pages +++ a/drivers/infiniband/hw/usnic/usnic_uiom.c @@ -140,7 +140,7 @@ static int usnic_uiom_get_pages(unsigned 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; --- a/drivers/infiniband/sw/siw/siw_mem.c~mm-gup-remove-vmas-parameter-from-pin_user_pages +++ a/drivers/infiniband/sw/siw/siw_mem.c @@ -422,7 +422,7 @@ struct siw_umem *siw_umem_get(u64 start, 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; --- a/drivers/media/v4l2-core/videobuf-dma-sg.c~mm-gup-remove-vmas-parameter-from-pin_user_pages +++ a/drivers/media/v4l2-core/videobuf-dma-sg.c @@ -180,7 +180,7 @@ static int videobuf_dma_init_user_locked 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; --- a/drivers/vdpa/vdpa_user/vduse_dev.c~mm-gup-remove-vmas-parameter-from-pin_user_pages +++ a/drivers/vdpa/vdpa_user/vduse_dev.c @@ -1052,7 +1052,7 @@ static int vduse_dev_reg_umem(struct vdu 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; --- a/drivers/vhost/vdpa.c~mm-gup-remove-vmas-parameter-from-pin_user_pages +++ a/drivers/vhost/vdpa.c @@ -983,7 +983,7 @@ static int vhost_vdpa_pa_map(struct vhos 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; --- a/include/linux/mm.h~mm-gup-remove-vmas-parameter-from-pin_user_pages +++ a/include/linux/mm.h @@ -2412,8 +2412,7 @@ static inline struct page *get_user_page 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, --- a/io_uring/rsrc.c~mm-gup-remove-vmas-parameter-from-pin_user_pages +++ a/io_uring/rsrc.c @@ -1044,7 +1044,7 @@ struct page **io_pin_pages(unsigned long 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 --- a/mm/gup.c~mm-gup-remove-vmas-parameter-from-pin_user_pages +++ a/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); --- a/mm/gup_test.c~mm-gup-remove-vmas-parameter-from-pin_user_pages +++ a/mm/gup_test.c @@ -146,18 +146,17 @@ static int __gup_test_ioctl(unsigned int 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_star 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; --- a/net/xdp/xdp_umem.c~mm-gup-remove-vmas-parameter-from-pin_user_pages +++ a/net/xdp/xdp_umem.c @@ -103,7 +103,7 @@ static int xdp_umem_pin_pages(struct xdp 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) { _ Patches currently in -mm which might be from lstoakes@gmail.com are mm-mmap-separate-writenotify-and-dirty-tracking-logic.patch mm-gup-disallow-foll_longterm-gup-nonfast-writing-to-file-backed-mappings.patch mm-gup-disallow-foll_longterm-gup-fast-writing-to-file-backed-mappings.patch mm-gup-add-missing-gup_must_unshare-check-to-gup_huge_pgd.patch mm-gup-remove-unused-vmas-parameter-from-get_user_pages.patch mm-gup-remove-unused-vmas-parameter-from-pin_user_pages_remote.patch mm-gup-remove-vmas-parameter-from-get_user_pages_remote.patch io_uring-rsrc-delegate-vma-file-backed-check-to-gup.patch mm-gup-remove-vmas-parameter-from-pin_user_pages.patch mm-gup-remove-vmas-array-from-internal-gup-functions.patch