From patchwork Tue Mar 26 16:47:45 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Jerome Glisse X-Patchwork-Id: 10871629 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 AC25B13B5 for ; Tue, 26 Mar 2019 16:48:27 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 9090F28D00 for ; Tue, 26 Mar 2019 16:48:27 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 81B0228DCC; Tue, 26 Mar 2019 16:48:27 +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=-2.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_NONE autolearn=ham version=3.3.1 Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 5F91128D00 for ; Tue, 26 Mar 2019 16:48:26 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 55F9D6B0295; Tue, 26 Mar 2019 12:48:24 -0400 (EDT) Delivered-To: linux-mm-outgoing@kvack.org Received: by kanga.kvack.org (Postfix, from userid 40) id 50DB26B0296; Tue, 26 Mar 2019 12:48:24 -0400 (EDT) X-Original-To: int-list-linux-mm@kvack.org X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 3FDB36B0297; Tue, 26 Mar 2019 12:48:24 -0400 (EDT) X-Original-To: linux-mm@kvack.org X-Delivered-To: linux-mm@kvack.org Received: from mail-qt1-f197.google.com (mail-qt1-f197.google.com [209.85.160.197]) by kanga.kvack.org (Postfix) with ESMTP id 2063A6B0295 for ; Tue, 26 Mar 2019 12:48:24 -0400 (EDT) Received: by mail-qt1-f197.google.com with SMTP id f89so14148032qtb.4 for ; Tue, 26 Mar 2019 09:48:24 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-original-authentication-results:x-gm-message-state:from:to:cc :subject:date:message-id:in-reply-to:references:mime-version :content-transfer-encoding; bh=5aXxvtn0O4+PNqIUkx9q2en4OaUhYXZSTYKnUsWACz8=; b=hcwBG1l7iEp6UK7pwZust7TVSyRhEnLjbG9zTnPM+aW3hzFBaukMpB+W1/jVvsnH6b SH4XgpljPX3Dh6KH49TuI9SWkwp6XoVAgFKUnYdatKyBy4qLWaArZTgnBBIcZMMMvuQB IsVOcy8utiTnk/PusG2Kribl/v7jyeiN3V5btiBnEe9sSHPg3GYXSj8/NkSOW8FsRxpn fk4yW+cTSoBC/xAwt25YNLginiX5q866CVqVjxGsfy5GgpxvPzNprZPDxzAr6GF2jriU +zkHM3eAZA+NUtxUkUuSDvU/o+3bny7t38bAt/FD0fR2f/fuG1FFlub1HeHZLcWg/azS +xNQ== X-Original-Authentication-Results: mx.google.com; spf=pass (google.com: domain of jglisse@redhat.com designates 209.132.183.28 as permitted sender) smtp.mailfrom=jglisse@redhat.com; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=redhat.com X-Gm-Message-State: APjAAAWs7GhQybjnn42auvA6OArGwf254eYAZJDt0Iz/VZOAM63PM1TI nahz3FSMfMXcjI6Z2uaaH+s6bA0mPjL2Ek5Y/RJG+pcnVWhdjqd82AsEoFfGP3JtK37b7SyJUad XGu8cc6NuVZQGmLjBcunY5L8X7sPWoK4A06MYmnzSOuJTvnUBgk9GAfYfyO6W4REsTg== X-Received: by 2002:a0c:aee6:: with SMTP id n38mr25278125qvd.69.1553618903859; Tue, 26 Mar 2019 09:48:23 -0700 (PDT) X-Google-Smtp-Source: APXvYqydVyOUqgP3E9kLHtgUl/IsC99E/oOfk/dzw6AcfCFdWTtR/zEoxyGjhalo2eOa1p79FgrP X-Received: by 2002:a0c:aee6:: with SMTP id n38mr25278033qvd.69.1553618902574; Tue, 26 Mar 2019 09:48:22 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1553618902; cv=none; d=google.com; s=arc-20160816; b=QCnFCHml1vprOwiXM70VjZ0pltn72ca6ufLH42fgdNZHlQU1OOTzvp1sitacCb7p+c A53ABgm3l8ClMUOSdtnvBdNPZU4XnXSupNQIZduXN2uJjeaPJlEi9Wk8ifs+9G0GBZCV W2N/Rn63oqeCqcI7U99M1RmHTqLAfDTiLaxJCwPve4AzRXLldhnUg5Vlm9kqtaoRu7Cz UXsN8Yw1y3eiGW7BCzTIbszzjpYR59lxL+9KrC9LmmfD5VO7N6n8p7ORRe+kbEhrDmCd 3pwee/N0uFfZh9rA2raiKJj/3sOlp5Q5+jaMqmtdRLWZYr6UC6gJhYIBJajJySB5gVtP MKkg== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from; bh=5aXxvtn0O4+PNqIUkx9q2en4OaUhYXZSTYKnUsWACz8=; b=L7ao2pPWG3ffbwLx/TvXybgtmUlHhLGC9HxU8aO44NzUMqjcDTaqfYBTdiD3E0cvbN o/E5/eQgKxS+fo9PjOi5dC1qBrsLrvzkO3rDqpS7rUx6vbnhtiuv0D0teSd24Pz1yABR 1qcxLK70xtNoV7GFtzn1YQH6qpaH7T5UvNqoHf1nzKc3/N8HCMbx0R0b3+c5od7M2tZ9 XASUFgRQLmeTFarS8mYr3TlHCRhOKsV0FH3TtzcOHQdY2XmJH9jd2knHYVpUS2hNelsx gOGa98gHuI4MdJ+ucro6RNS/0hwvOiKeBxSTrGyhG2gUsFE/8na/lL+MtU1H8XfmY32N fbWA== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: domain of jglisse@redhat.com designates 209.132.183.28 as permitted sender) smtp.mailfrom=jglisse@redhat.com; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=redhat.com Received: from mx1.redhat.com (mx1.redhat.com. [209.132.183.28]) by mx.google.com with ESMTPS id h19si885738qto.168.2019.03.26.09.48.22 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Tue, 26 Mar 2019 09:48:22 -0700 (PDT) Received-SPF: pass (google.com: domain of jglisse@redhat.com designates 209.132.183.28 as permitted sender) client-ip=209.132.183.28; Authentication-Results: mx.google.com; spf=pass (google.com: domain of jglisse@redhat.com designates 209.132.183.28 as permitted sender) smtp.mailfrom=jglisse@redhat.com; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=redhat.com Received: from smtp.corp.redhat.com (int-mx05.intmail.prod.int.phx2.redhat.com [10.5.11.15]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 92EEC8667A; Tue, 26 Mar 2019 16:48:21 +0000 (UTC) Received: from localhost.localdomain.com (unknown [10.20.6.236]) by smtp.corp.redhat.com (Postfix) with ESMTP id EA91C17C5F; Tue, 26 Mar 2019 16:48:12 +0000 (UTC) From: jglisse@redhat.com To: linux-kernel@vger.kernel.org Cc: =?utf-8?b?SsOpcsO0bWUgR2xpc3Nl?= , Andrew Morton , linux-mm@kvack.org, =?utf-8?q?Ch?= =?utf-8?q?ristian_K=C3=B6nig?= , Joonas Lahtinen , Jani Nikula , Rodrigo Vivi , Jan Kara , Andrea Arcangeli , Peter Xu , Felix Kuehling , Jason Gunthorpe , Ross Zwisler , Dan Williams , Paolo Bonzini , =?utf-8?b?UmFkaW0gS3LEjW3DocWZ?= , Michal Hocko , Ralph Campbell , John Hubbard , kvm@vger.kernel.org, dri-devel@lists.freedesktop.org, linux-rdma@vger.kernel.org, Arnd Bergmann Subject: [PATCH v6 6/8] mm/mmu_notifier: use correct mmu_notifier events for each invalidation Date: Tue, 26 Mar 2019 12:47:45 -0400 Message-Id: <20190326164747.24405-7-jglisse@redhat.com> In-Reply-To: <20190326164747.24405-1-jglisse@redhat.com> References: <20190326164747.24405-1-jglisse@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.15 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.26]); Tue, 26 Mar 2019 16:48:21 +0000 (UTC) X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: X-Virus-Scanned: ClamAV using ClamSMTP From: Jérôme Glisse This update each existing invalidation to use the correct mmu notifier event that represent what is happening to the CPU page table. See the patch which introduced the events to see the rational behind this. Signed-off-by: Jérôme Glisse Cc: Andrew Morton Cc: linux-mm@kvack.org Cc: Christian König Cc: Joonas Lahtinen Cc: Jani Nikula Cc: Rodrigo Vivi Cc: Jan Kara Cc: Andrea Arcangeli Cc: Peter Xu Cc: Felix Kuehling Cc: Jason Gunthorpe Cc: Ross Zwisler Cc: Dan Williams Cc: Paolo Bonzini Cc: Radim Krčmář Cc: Michal Hocko Cc: Christian Koenig Cc: Ralph Campbell Cc: John Hubbard Cc: kvm@vger.kernel.org Cc: dri-devel@lists.freedesktop.org Cc: linux-rdma@vger.kernel.org Cc: Arnd Bergmann --- fs/proc/task_mmu.c | 4 ++-- kernel/events/uprobes.c | 2 +- mm/huge_memory.c | 14 ++++++-------- mm/hugetlb.c | 8 ++++---- mm/khugepaged.c | 2 +- mm/ksm.c | 4 ++-- mm/madvise.c | 2 +- mm/memory.c | 14 +++++++------- mm/migrate.c | 4 ++-- mm/mprotect.c | 5 +++-- mm/rmap.c | 6 +++--- 11 files changed, 32 insertions(+), 33 deletions(-) diff --git a/fs/proc/task_mmu.c b/fs/proc/task_mmu.c index fcbd0e574917..3b93ce496dd4 100644 --- a/fs/proc/task_mmu.c +++ b/fs/proc/task_mmu.c @@ -1151,8 +1151,8 @@ static ssize_t clear_refs_write(struct file *file, const char __user *buf, break; } - mmu_notifier_range_init(&range, MMU_NOTIFY_UNMAP, 0, - NULL, mm, 0, -1UL); + mmu_notifier_range_init(&range, MMU_NOTIFY_SOFT_DIRTY, + 0, NULL, mm, 0, -1UL); mmu_notifier_invalidate_range_start(&range); } walk_page_range(0, mm->highest_vm_end, &clear_refs_walk); diff --git a/kernel/events/uprobes.c b/kernel/events/uprobes.c index 77c3f079c723..79c84bb48ea9 100644 --- a/kernel/events/uprobes.c +++ b/kernel/events/uprobes.c @@ -161,7 +161,7 @@ static int __replace_page(struct vm_area_struct *vma, unsigned long addr, struct mmu_notifier_range range; struct mem_cgroup *memcg; - mmu_notifier_range_init(&range, MMU_NOTIFY_UNMAP, 0, vma, mm, addr, + mmu_notifier_range_init(&range, MMU_NOTIFY_CLEAR, 0, vma, mm, addr, addr + PAGE_SIZE); VM_BUG_ON_PAGE(PageTransHuge(old_page), old_page); diff --git a/mm/huge_memory.c b/mm/huge_memory.c index 4309939be22d..f0ad70c29500 100644 --- a/mm/huge_memory.c +++ b/mm/huge_memory.c @@ -1184,9 +1184,8 @@ static vm_fault_t do_huge_pmd_wp_page_fallback(struct vm_fault *vmf, cond_resched(); } - mmu_notifier_range_init(&range, MMU_NOTIFY_UNMAP, 0, vma, vma->vm_mm, - haddr, - haddr + HPAGE_PMD_SIZE); + mmu_notifier_range_init(&range, MMU_NOTIFY_CLEAR, 0, vma, vma->vm_mm, + haddr, haddr + HPAGE_PMD_SIZE); mmu_notifier_invalidate_range_start(&range); vmf->ptl = pmd_lock(vma->vm_mm, vmf->pmd); @@ -1349,9 +1348,8 @@ vm_fault_t do_huge_pmd_wp_page(struct vm_fault *vmf, pmd_t orig_pmd) vma, HPAGE_PMD_NR); __SetPageUptodate(new_page); - mmu_notifier_range_init(&range, MMU_NOTIFY_UNMAP, 0, vma, vma->vm_mm, - haddr, - haddr + HPAGE_PMD_SIZE); + mmu_notifier_range_init(&range, MMU_NOTIFY_CLEAR, 0, vma, vma->vm_mm, + haddr, haddr + HPAGE_PMD_SIZE); mmu_notifier_invalidate_range_start(&range); spin_lock(vmf->ptl); @@ -2026,7 +2024,7 @@ void __split_huge_pud(struct vm_area_struct *vma, pud_t *pud, spinlock_t *ptl; struct mmu_notifier_range range; - mmu_notifier_range_init(&range, MMU_NOTIFY_UNMAP, 0, vma, vma->vm_mm, + mmu_notifier_range_init(&range, MMU_NOTIFY_CLEAR, 0, vma, vma->vm_mm, address & HPAGE_PUD_MASK, (address & HPAGE_PUD_MASK) + HPAGE_PUD_SIZE); mmu_notifier_invalidate_range_start(&range); @@ -2245,7 +2243,7 @@ void __split_huge_pmd(struct vm_area_struct *vma, pmd_t *pmd, spinlock_t *ptl; struct mmu_notifier_range range; - mmu_notifier_range_init(&range, MMU_NOTIFY_UNMAP, 0, vma, vma->vm_mm, + mmu_notifier_range_init(&range, MMU_NOTIFY_CLEAR, 0, vma, vma->vm_mm, address & HPAGE_PMD_MASK, (address & HPAGE_PMD_MASK) + HPAGE_PMD_SIZE); mmu_notifier_invalidate_range_start(&range); diff --git a/mm/hugetlb.c b/mm/hugetlb.c index c20a8d2de3f3..44fe3565ef37 100644 --- a/mm/hugetlb.c +++ b/mm/hugetlb.c @@ -3247,7 +3247,7 @@ int copy_hugetlb_page_range(struct mm_struct *dst, struct mm_struct *src, cow = (vma->vm_flags & (VM_SHARED | VM_MAYWRITE)) == VM_MAYWRITE; if (cow) { - mmu_notifier_range_init(&range, MMU_NOTIFY_UNMAP, 0, vma, src, + mmu_notifier_range_init(&range, MMU_NOTIFY_CLEAR, 0, vma, src, vma->vm_start, vma->vm_end); mmu_notifier_invalidate_range_start(&range); @@ -3628,7 +3628,7 @@ static vm_fault_t hugetlb_cow(struct mm_struct *mm, struct vm_area_struct *vma, pages_per_huge_page(h)); __SetPageUptodate(new_page); - mmu_notifier_range_init(&range, MMU_NOTIFY_UNMAP, 0, vma, mm, haddr, + mmu_notifier_range_init(&range, MMU_NOTIFY_CLEAR, 0, vma, mm, haddr, haddr + huge_page_size(h)); mmu_notifier_invalidate_range_start(&range); @@ -4361,8 +4361,8 @@ unsigned long hugetlb_change_protection(struct vm_area_struct *vma, * start/end. Set range.start/range.end to cover the maximum possible * range if PMD sharing is possible. */ - mmu_notifier_range_init(&range, MMU_NOTIFY_UNMAP, 0, vma, mm, start, - end); + mmu_notifier_range_init(&range, MMU_NOTIFY_PROTECTION_VMA, + 0, vma, mm, start, end); adjust_range_if_pmd_sharing_possible(vma, &range.start, &range.end); BUG_ON(address >= end); diff --git a/mm/khugepaged.c b/mm/khugepaged.c index e7944f5e6258..579699d2b347 100644 --- a/mm/khugepaged.c +++ b/mm/khugepaged.c @@ -1016,7 +1016,7 @@ static void collapse_huge_page(struct mm_struct *mm, pte = pte_offset_map(pmd, address); pte_ptl = pte_lockptr(mm, pmd); - mmu_notifier_range_init(&range, MMU_NOTIFY_UNMAP, 0, NULL, mm, + mmu_notifier_range_init(&range, MMU_NOTIFY_CLEAR, 0, NULL, mm, address, address + HPAGE_PMD_SIZE); mmu_notifier_invalidate_range_start(&range); pmd_ptl = pmd_lock(mm, pmd); /* probably unnecessary */ diff --git a/mm/ksm.c b/mm/ksm.c index 01f5fe2c90cf..81c20ed57bf6 100644 --- a/mm/ksm.c +++ b/mm/ksm.c @@ -1066,7 +1066,7 @@ static int write_protect_page(struct vm_area_struct *vma, struct page *page, BUG_ON(PageTransCompound(page)); - mmu_notifier_range_init(&range, MMU_NOTIFY_UNMAP, 0, vma, mm, + mmu_notifier_range_init(&range, MMU_NOTIFY_CLEAR, 0, vma, mm, pvmw.address, pvmw.address + PAGE_SIZE); mmu_notifier_invalidate_range_start(&range); @@ -1155,7 +1155,7 @@ static int replace_page(struct vm_area_struct *vma, struct page *page, if (!pmd) goto out; - mmu_notifier_range_init(&range, MMU_NOTIFY_UNMAP, 0, vma, mm, addr, + mmu_notifier_range_init(&range, MMU_NOTIFY_CLEAR, 0, vma, mm, addr, addr + PAGE_SIZE); mmu_notifier_invalidate_range_start(&range); diff --git a/mm/madvise.c b/mm/madvise.c index c617f53a9c09..a692d2a893b5 100644 --- a/mm/madvise.c +++ b/mm/madvise.c @@ -472,7 +472,7 @@ static int madvise_free_single_vma(struct vm_area_struct *vma, range.end = min(vma->vm_end, end_addr); if (range.end <= vma->vm_start) return -EINVAL; - mmu_notifier_range_init(&range, MMU_NOTIFY_UNMAP, 0, vma, mm, + mmu_notifier_range_init(&range, MMU_NOTIFY_CLEAR, 0, vma, mm, range.start, range.end); lru_add_drain(); diff --git a/mm/memory.c b/mm/memory.c index ac6754bb30c8..c24c5ffe950f 100644 --- a/mm/memory.c +++ b/mm/memory.c @@ -1010,8 +1010,8 @@ int copy_page_range(struct mm_struct *dst_mm, struct mm_struct *src_mm, is_cow = is_cow_mapping(vma->vm_flags); if (is_cow) { - mmu_notifier_range_init(&range, MMU_NOTIFY_UNMAP, 0, vma, - src_mm, addr, end); + mmu_notifier_range_init(&range, MMU_NOTIFY_PROTECTION_PAGE, + 0, vma, src_mm, addr, end); mmu_notifier_invalidate_range_start(&range); } @@ -1358,7 +1358,7 @@ void zap_page_range(struct vm_area_struct *vma, unsigned long start, struct mmu_gather tlb; lru_add_drain(); - mmu_notifier_range_init(&range, MMU_NOTIFY_UNMAP, 0, vma, vma->vm_mm, + mmu_notifier_range_init(&range, MMU_NOTIFY_CLEAR, 0, vma, vma->vm_mm, start, start + size); tlb_gather_mmu(&tlb, vma->vm_mm, start, range.end); update_hiwater_rss(vma->vm_mm); @@ -1385,7 +1385,7 @@ static void zap_page_range_single(struct vm_area_struct *vma, unsigned long addr struct mmu_gather tlb; lru_add_drain(); - mmu_notifier_range_init(&range, MMU_NOTIFY_UNMAP, 0, vma, vma->vm_mm, + mmu_notifier_range_init(&range, MMU_NOTIFY_CLEAR, 0, vma, vma->vm_mm, address, address + size); tlb_gather_mmu(&tlb, vma->vm_mm, address, range.end); update_hiwater_rss(vma->vm_mm); @@ -2282,7 +2282,7 @@ static vm_fault_t wp_page_copy(struct vm_fault *vmf) __SetPageUptodate(new_page); - mmu_notifier_range_init(&range, MMU_NOTIFY_UNMAP, 0, vma, mm, + mmu_notifier_range_init(&range, MMU_NOTIFY_CLEAR, 0, vma, mm, vmf->address & PAGE_MASK, (vmf->address & PAGE_MASK) + PAGE_SIZE); mmu_notifier_invalidate_range_start(&range); @@ -4108,7 +4108,7 @@ static int __follow_pte_pmd(struct mm_struct *mm, unsigned long address, goto out; if (range) { - mmu_notifier_range_init(range, MMU_NOTIFY_UNMAP, 0, + mmu_notifier_range_init(range, MMU_NOTIFY_CLEAR, 0, NULL, mm, address & PMD_MASK, (address & PMD_MASK) + PMD_SIZE); mmu_notifier_invalidate_range_start(range); @@ -4127,7 +4127,7 @@ static int __follow_pte_pmd(struct mm_struct *mm, unsigned long address, goto out; if (range) { - mmu_notifier_range_init(range, MMU_NOTIFY_UNMAP, 0, NULL, mm, + mmu_notifier_range_init(range, MMU_NOTIFY_CLEAR, 0, NULL, mm, address & PAGE_MASK, (address & PAGE_MASK) + PAGE_SIZE); mmu_notifier_invalidate_range_start(range); diff --git a/mm/migrate.c b/mm/migrate.c index 8f6e4382f0ad..f37b1a4bf9c0 100644 --- a/mm/migrate.c +++ b/mm/migrate.c @@ -2351,7 +2351,7 @@ static void migrate_vma_collect(struct migrate_vma *migrate) mm_walk.mm = migrate->vma->vm_mm; mm_walk.private = migrate; - mmu_notifier_range_init(&range, MMU_NOTIFY_UNMAP, 0, NULL, mm_walk.mm, + mmu_notifier_range_init(&range, MMU_NOTIFY_CLEAR, 0, NULL, mm_walk.mm, migrate->start, migrate->end); mmu_notifier_invalidate_range_start(&range); @@ -2760,7 +2760,7 @@ static void migrate_vma_pages(struct migrate_vma *migrate) notified = true; mmu_notifier_range_init(&range, - MMU_NOTIFY_UNMAP, 0, + MMU_NOTIFY_CLEAR, 0, NULL, migrate->vma->vm_mm, addr, migrate->end); diff --git a/mm/mprotect.c b/mm/mprotect.c index b10984052ae9..65242f1e4457 100644 --- a/mm/mprotect.c +++ b/mm/mprotect.c @@ -185,8 +185,9 @@ static inline unsigned long change_pmd_range(struct vm_area_struct *vma, /* invoke the mmu notifier if the pmd is populated */ if (!range.start) { - mmu_notifier_range_init(&range, MMU_NOTIFY_UNMAP, 0, - vma, vma->vm_mm, addr, end); + mmu_notifier_range_init(&range, + MMU_NOTIFY_PROTECTION_VMA, 0, + vma, vma->vm_mm, addr, end); mmu_notifier_invalidate_range_start(&range); } diff --git a/mm/rmap.c b/mm/rmap.c index dba724f83ddd..c26becc3982c 100644 --- a/mm/rmap.c +++ b/mm/rmap.c @@ -896,8 +896,8 @@ static bool page_mkclean_one(struct page *page, struct vm_area_struct *vma, * We have to assume the worse case ie pmd for invalidation. Note that * the page can not be free from this function. */ - mmu_notifier_range_init(&range, MMU_NOTIFY_UNMAP, 0, vma, vma->vm_mm, - address, + mmu_notifier_range_init(&range, MMU_NOTIFY_PROTECTION_PAGE, + 0, vma, vma->vm_mm, address, min(vma->vm_end, address + (PAGE_SIZE << compound_order(page)))); mmu_notifier_invalidate_range_start(&range); @@ -1372,7 +1372,7 @@ static bool try_to_unmap_one(struct page *page, struct vm_area_struct *vma, * Note that the page can not be free in this function as call of * try_to_unmap() must hold a reference on the page. */ - mmu_notifier_range_init(&range, MMU_NOTIFY_UNMAP, 0, vma, vma->vm_mm, + mmu_notifier_range_init(&range, MMU_NOTIFY_CLEAR, 0, vma, vma->vm_mm, address, min(vma->vm_end, address + (PAGE_SIZE << compound_order(page))));