Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752021AbaFLS6Y (ORCPT ); Thu, 12 Jun 2014 14:58:24 -0400 Received: from mail-qa0-f46.google.com ([209.85.216.46]:63047 "EHLO mail-qa0-f46.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751507AbaFLS5o (ORCPT ); Thu, 12 Jun 2014 14:57:44 -0400 From: j.glisse@gmail.com To: akpm@linux-foundation.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org Cc: =?UTF-8?q?J=C3=A9r=C3=B4me=20Glisse?= Subject: [PATCH 3/5] mmu_notifier: pass through vma to invalidate_range and invalidate_page Date: Thu, 12 Jun 2014 14:57:32 -0400 Message-Id: <1402599454-3526-3-git-send-email-j.glisse@gmail.com> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1402599454-3526-1-git-send-email-j.glisse@gmail.com> References: <1402598029-3331-1-git-send-email-j.glisse@gmail.com> <1402599454-3526-1-git-send-email-j.glisse@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Jérôme Glisse New user of the mmu_notifier interface need to lookup vma in order to perform the invalidation operation. Instead of redoing a vma lookup inside the callback just pass through the vma from the call site where it is already available. This needs small refactoring in memory.c to call invalidate_range on vma boundary the overhead should be low enough. Signed-off-by: Jérôme Glisse --- drivers/gpu/drm/i915/i915_gem_userptr.c | 1 + drivers/iommu/amd_iommu_v2.c | 3 +++ drivers/misc/sgi-gru/grutlbpurge.c | 6 +++++- drivers/xen/gntdev.c | 4 +++- fs/proc/task_mmu.c | 17 ++++++++++----- include/linux/mmu_notifier.h | 18 +++++++++++++--- kernel/events/uprobes.c | 4 ++-- mm/filemap_xip.c | 2 +- mm/huge_memory.c | 26 +++++++++++----------- mm/hugetlb.c | 16 +++++++------- mm/ksm.c | 8 +++---- mm/memory.c | 38 ++++++++++++++++++++++----------- mm/migrate.c | 6 +++--- mm/mmu_notifier.c | 9 +++++--- mm/mprotect.c | 4 ++-- mm/mremap.c | 4 ++-- mm/rmap.c | 8 +++---- virt/kvm/kvm_main.c | 3 +++ 18 files changed, 113 insertions(+), 64 deletions(-) diff --git a/drivers/gpu/drm/i915/i915_gem_userptr.c b/drivers/gpu/drm/i915/i915_gem_userptr.c index 7f7b4f3..70bae03 100644 --- a/drivers/gpu/drm/i915/i915_gem_userptr.c +++ b/drivers/gpu/drm/i915/i915_gem_userptr.c @@ -55,6 +55,7 @@ struct i915_mmu_object { static void i915_gem_userptr_mn_invalidate_range_start(struct mmu_notifier *_mn, struct mm_struct *mm, + struct vm_area_struct *vma, unsigned long start, unsigned long end, enum mmu_action action) diff --git a/drivers/iommu/amd_iommu_v2.c b/drivers/iommu/amd_iommu_v2.c index 81ff80b..6f025a1 100644 --- a/drivers/iommu/amd_iommu_v2.c +++ b/drivers/iommu/amd_iommu_v2.c @@ -421,6 +421,7 @@ static void mn_change_pte(struct mmu_notifier *mn, static void mn_invalidate_page(struct mmu_notifier *mn, struct mm_struct *mm, + struct vm_area_struct *vma, unsigned long address, enum mmu_action action) { @@ -429,6 +430,7 @@ static void mn_invalidate_page(struct mmu_notifier *mn, static void mn_invalidate_range_start(struct mmu_notifier *mn, struct mm_struct *mm, + struct vm_area_struct *vma, unsigned long start, unsigned long end, enum mmu_action action) @@ -448,6 +450,7 @@ static void mn_invalidate_range_start(struct mmu_notifier *mn, static void mn_invalidate_range_end(struct mmu_notifier *mn, struct mm_struct *mm, + struct vm_area_struct *vma, unsigned long start, unsigned long end, enum mmu_action action) diff --git a/drivers/misc/sgi-gru/grutlbpurge.c b/drivers/misc/sgi-gru/grutlbpurge.c index 3427bfc..716501b 100644 --- a/drivers/misc/sgi-gru/grutlbpurge.c +++ b/drivers/misc/sgi-gru/grutlbpurge.c @@ -221,6 +221,7 @@ void gru_flush_all_tlb(struct gru_state *gru) */ static void gru_invalidate_range_start(struct mmu_notifier *mn, struct mm_struct *mm, + struct vm_area_struct *vma, unsigned long start, unsigned long end, enum mmu_action action) { @@ -235,7 +236,9 @@ static void gru_invalidate_range_start(struct mmu_notifier *mn, } static void gru_invalidate_range_end(struct mmu_notifier *mn, - struct mm_struct *mm, unsigned long start, + struct mm_struct *mm, + struct vm_area_struct *vma, + unsigned long start, unsigned long end, enum mmu_action action) { @@ -250,6 +253,7 @@ static void gru_invalidate_range_end(struct mmu_notifier *mn, } static void gru_invalidate_page(struct mmu_notifier *mn, struct mm_struct *mm, + struct vm_area_struct *vma, unsigned long address, enum mmu_action action) { diff --git a/drivers/xen/gntdev.c b/drivers/xen/gntdev.c index 84aa5a7..447c3fb 100644 --- a/drivers/xen/gntdev.c +++ b/drivers/xen/gntdev.c @@ -428,6 +428,7 @@ static void unmap_if_in_range(struct grant_map *map, static void mn_invl_range_start(struct mmu_notifier *mn, struct mm_struct *mm, + struct vm_area_struct *vma, unsigned long start, unsigned long end, enum mmu_action action) @@ -447,10 +448,11 @@ static void mn_invl_range_start(struct mmu_notifier *mn, static void mn_invl_page(struct mmu_notifier *mn, struct mm_struct *mm, + struct vm_area_struct *vma, unsigned long address, enum mmu_action action) { - mn_invl_range_start(mn, mm, address, address + PAGE_SIZE, action); + mn_invl_range_start(mn, mm, vma, address, address + PAGE_SIZE, action); } static void mn_release(struct mmu_notifier *mn, diff --git a/fs/proc/task_mmu.c b/fs/proc/task_mmu.c index fda2324..8b368f0 100644 --- a/fs/proc/task_mmu.c +++ b/fs/proc/task_mmu.c @@ -823,12 +823,19 @@ static ssize_t clear_refs_write(struct file *file, const char __user *buf, .private = &cp, }; down_read(&mm->mmap_sem); - if (type == CLEAR_REFS_SOFT_DIRTY) - mmu_notifier_invalidate_range_start(mm, 0, -1, MMU_SOFT_DIRTY); - for (vma = mm->mmap; vma; vma = vma->vm_next) + for (vma = mm->mmap; vma; vma = vma->vm_next) { + if (type == CLEAR_REFS_SOFT_DIRTY) + mmu_notifier_invalidate_range_start(mm, vma, + vma->vm_start, + vma->vm_end, + MMU_SOFT_DIRTY); walk_page_vma(vma, &clear_refs_walk); - if (type == CLEAR_REFS_SOFT_DIRTY) - mmu_notifier_invalidate_range_end(mm, 0, -1, MMU_SOFT_DIRTY); + if (type == CLEAR_REFS_SOFT_DIRTY) + mmu_notifier_invalidate_range_end(mm, vma, + vma->vm_start, + vma->vm_end, + MMU_SOFT_DIRTY); + } flush_tlb_mm(mm); up_read(&mm->mmap_sem); mmput(mm); diff --git a/include/linux/mmu_notifier.h b/include/linux/mmu_notifier.h index 90b9105..0794a73b 100644 --- a/include/linux/mmu_notifier.h +++ b/include/linux/mmu_notifier.h @@ -126,6 +126,7 @@ struct mmu_notifier_ops { */ void (*invalidate_page)(struct mmu_notifier *mn, struct mm_struct *mm, + struct vm_area_struct *vma, unsigned long address, enum mmu_action action); @@ -174,11 +175,13 @@ struct mmu_notifier_ops { */ void (*invalidate_range_start)(struct mmu_notifier *mn, struct mm_struct *mm, + struct vm_area_struct *vma, unsigned long start, unsigned long end, enum mmu_action action); void (*invalidate_range_end)(struct mmu_notifier *mn, struct mm_struct *mm, + struct vm_area_struct *vma, unsigned long start, unsigned long end, enum mmu_action action); @@ -222,13 +225,16 @@ extern void __mmu_notifier_change_pte(struct mm_struct *mm, pte_t pte, enum mmu_action action); extern void __mmu_notifier_invalidate_page(struct mm_struct *mm, + struct vm_area_struct *vma, unsigned long address, enum mmu_action action); extern void __mmu_notifier_invalidate_range_start(struct mm_struct *mm, + struct vm_area_struct *vma, unsigned long start, unsigned long end, enum mmu_action action); extern void __mmu_notifier_invalidate_range_end(struct mm_struct *mm, + struct vm_area_struct *vma, unsigned long start, unsigned long end, enum mmu_action action); @@ -265,29 +271,32 @@ static inline void mmu_notifier_change_pte(struct mm_struct *mm, } static inline void mmu_notifier_invalidate_page(struct mm_struct *mm, + struct vm_area_struct *vma, unsigned long address, enum mmu_action action) { if (mm_has_notifiers(mm)) - __mmu_notifier_invalidate_page(mm, address, action); + __mmu_notifier_invalidate_page(mm, vma, address, action); } static inline void mmu_notifier_invalidate_range_start(struct mm_struct *mm, + struct vm_area_struct *vma, unsigned long start, unsigned long end, enum mmu_action action) { if (mm_has_notifiers(mm)) - __mmu_notifier_invalidate_range_start(mm, start, end, action); + __mmu_notifier_invalidate_range_start(mm, vma, start, end, action); } static inline void mmu_notifier_invalidate_range_end(struct mm_struct *mm, + struct vm_area_struct *vma, unsigned long start, unsigned long end, enum mmu_action action) { if (mm_has_notifiers(mm)) - __mmu_notifier_invalidate_range_end(mm, start, end, action); + __mmu_notifier_invalidate_range_end(mm, vma, start, end, action); } static inline void mmu_notifier_mm_init(struct mm_struct *mm) @@ -369,12 +378,14 @@ static inline void mmu_notifier_change_pte(struct mm_struct *mm, } static inline void mmu_notifier_invalidate_page(struct mm_struct *mm, + struct vm_area_struct *vma, unsigned long address, enum mmu_action action) { } static inline void mmu_notifier_invalidate_range_start(struct mm_struct *mm, + struct vm_area_struct *vma, unsigned long start, unsigned long end, enum mmu_action action) @@ -382,6 +393,7 @@ static inline void mmu_notifier_invalidate_range_start(struct mm_struct *mm, } static inline void mmu_notifier_invalidate_range_end(struct mm_struct *mm, + struct vm_area_struct *vma, unsigned long start, unsigned long end, enum mmu_action action) diff --git a/kernel/events/uprobes.c b/kernel/events/uprobes.c index 3e2308f..a0459dd 100644 --- a/kernel/events/uprobes.c +++ b/kernel/events/uprobes.c @@ -171,7 +171,7 @@ static int __replace_page(struct vm_area_struct *vma, unsigned long addr, /* For try_to_free_swap() and munlock_vma_page() below */ lock_page(page); - mmu_notifier_invalidate_range_start(mm, mmun_start, mmun_end, MMU_UNMAP); + mmu_notifier_invalidate_range_start(mm, vma, mmun_start, mmun_end, MMU_UNMAP); err = -EAGAIN; ptep = page_check_address(page, mm, addr, &ptl, 0); if (!ptep) @@ -200,7 +200,7 @@ static int __replace_page(struct vm_area_struct *vma, unsigned long addr, err = 0; unlock: - mmu_notifier_invalidate_range_end(mm, mmun_start, mmun_end, MMU_UNMAP); + mmu_notifier_invalidate_range_end(mm, vma, mmun_start, mmun_end, MMU_UNMAP); unlock_page(page); return err; } diff --git a/mm/filemap_xip.c b/mm/filemap_xip.c index d529ab9..e01c68b 100644 --- a/mm/filemap_xip.c +++ b/mm/filemap_xip.c @@ -198,7 +198,7 @@ retry: BUG_ON(pte_dirty(pteval)); pte_unmap_unlock(pte, ptl); /* must invalidate_page _before_ freeing the page */ - mmu_notifier_invalidate_page(mm, address, MMU_UNMAP); + mmu_notifier_invalidate_page(mm, vma, address, MMU_UNMAP); page_cache_release(page); } } diff --git a/mm/huge_memory.c b/mm/huge_memory.c index 4ad9b73..05688b0 100644 --- a/mm/huge_memory.c +++ b/mm/huge_memory.c @@ -993,7 +993,7 @@ static int do_huge_pmd_wp_page_fallback(struct mm_struct *mm, mmun_start = haddr; mmun_end = haddr + HPAGE_PMD_SIZE; - mmu_notifier_invalidate_range_start(mm, mmun_start, mmun_end, MMU_THP_FAULT_WP); + mmu_notifier_invalidate_range_start(mm, vma, mmun_start, mmun_end, MMU_THP_FAULT_WP); ptl = pmd_lock(mm, pmd); if (unlikely(!pmd_same(*pmd, orig_pmd))) @@ -1023,7 +1023,7 @@ static int do_huge_pmd_wp_page_fallback(struct mm_struct *mm, page_remove_rmap(page); spin_unlock(ptl); - mmu_notifier_invalidate_range_end(mm, mmun_start, mmun_end, MMU_THP_FAULT_WP); + mmu_notifier_invalidate_range_end(mm, vma, mmun_start, mmun_end, MMU_THP_FAULT_WP); ret |= VM_FAULT_WRITE; put_page(page); @@ -1033,7 +1033,7 @@ out: out_free_pages: spin_unlock(ptl); - mmu_notifier_invalidate_range_end(mm, mmun_start, mmun_end, MMU_THP_FAULT_WP); + mmu_notifier_invalidate_range_end(mm, vma, mmun_start, mmun_end, MMU_THP_FAULT_WP); mem_cgroup_uncharge_start(); for (i = 0; i < HPAGE_PMD_NR; i++) { mem_cgroup_uncharge_page(pages[i]); @@ -1123,7 +1123,7 @@ alloc: mmun_start = haddr; mmun_end = haddr + HPAGE_PMD_SIZE; - mmu_notifier_invalidate_range_start(mm, mmun_start, mmun_end, MMU_THP_FAULT_WP); + mmu_notifier_invalidate_range_start(mm, vma, mmun_start, mmun_end, MMU_THP_FAULT_WP); spin_lock(ptl); if (page) @@ -1153,7 +1153,7 @@ alloc: } spin_unlock(ptl); out_mn: - mmu_notifier_invalidate_range_end(mm, mmun_start, mmun_end, MMU_THP_FAULT_WP); + mmu_notifier_invalidate_range_end(mm, vma, mmun_start, mmun_end, MMU_THP_FAULT_WP); out: return ret; out_unlock: @@ -1588,7 +1588,7 @@ static int __split_huge_page_splitting(struct page *page, const unsigned long mmun_start = address; const unsigned long mmun_end = address + HPAGE_PMD_SIZE; - mmu_notifier_invalidate_range_start(mm, mmun_start, mmun_end, MMU_THP_SPLIT); + mmu_notifier_invalidate_range_start(mm, vma, mmun_start, mmun_end, MMU_THP_SPLIT); pmd = page_check_address_pmd(page, mm, address, PAGE_CHECK_ADDRESS_PMD_NOTSPLITTING_FLAG, &ptl); if (pmd) { @@ -1603,7 +1603,7 @@ static int __split_huge_page_splitting(struct page *page, ret = 1; spin_unlock(ptl); } - mmu_notifier_invalidate_range_end(mm, mmun_start, mmun_end, MMU_THP_SPLIT); + mmu_notifier_invalidate_range_end(mm, vma, mmun_start, mmun_end, MMU_THP_SPLIT); return ret; } @@ -2402,7 +2402,7 @@ static void collapse_huge_page(struct mm_struct *mm, mmun_start = address; mmun_end = address + HPAGE_PMD_SIZE; - mmu_notifier_invalidate_range_start(mm, mmun_start, mmun_end, MMU_THP_SPLIT); + mmu_notifier_invalidate_range_start(mm, vma, mmun_start, mmun_end, MMU_THP_SPLIT); pmd_ptl = pmd_lock(mm, pmd); /* probably unnecessary */ /* * After this gup_fast can't run anymore. This also removes @@ -2412,7 +2412,7 @@ static void collapse_huge_page(struct mm_struct *mm, */ _pmd = pmdp_clear_flush(vma, address, pmd); spin_unlock(pmd_ptl); - mmu_notifier_invalidate_range_end(mm, mmun_start, mmun_end, MMU_THP_SPLIT); + mmu_notifier_invalidate_range_end(mm, vma, mmun_start, mmun_end, MMU_THP_SPLIT); spin_lock(pte_ptl); isolated = __collapse_huge_page_isolate(vma, address, pte); @@ -2801,24 +2801,24 @@ void __split_huge_page_pmd(struct vm_area_struct *vma, unsigned long address, mmun_start = haddr; mmun_end = haddr + HPAGE_PMD_SIZE; again: - mmu_notifier_invalidate_range_start(mm, mmun_start, mmun_end, MMU_THP_SPLIT); + mmu_notifier_invalidate_range_start(mm, vma, mmun_start, mmun_end, MMU_THP_SPLIT); ptl = pmd_lock(mm, pmd); if (unlikely(!pmd_trans_huge(*pmd))) { spin_unlock(ptl); - mmu_notifier_invalidate_range_end(mm, mmun_start, mmun_end, MMU_THP_SPLIT); + mmu_notifier_invalidate_range_end(mm, vma, mmun_start, mmun_end, MMU_THP_SPLIT); return; } if (is_huge_zero_pmd(*pmd)) { __split_huge_zero_page_pmd(vma, haddr, pmd); spin_unlock(ptl); - mmu_notifier_invalidate_range_end(mm, mmun_start, mmun_end, MMU_THP_SPLIT); + mmu_notifier_invalidate_range_end(mm, vma, mmun_start, mmun_end, MMU_THP_SPLIT); return; } page = pmd_page(*pmd); VM_BUG_ON_PAGE(!page_count(page), page); get_page(page); spin_unlock(ptl); - mmu_notifier_invalidate_range_end(mm, mmun_start, mmun_end, MMU_THP_SPLIT); + mmu_notifier_invalidate_range_end(mm, vma, mmun_start, mmun_end, MMU_THP_SPLIT); split_huge_page(page); diff --git a/mm/hugetlb.c b/mm/hugetlb.c index bfb455e..0ab7b24 100644 --- a/mm/hugetlb.c +++ b/mm/hugetlb.c @@ -2540,7 +2540,7 @@ int copy_hugetlb_page_range(struct mm_struct *dst, struct mm_struct *src, mmun_start = vma->vm_start; mmun_end = vma->vm_end; if (cow) - mmu_notifier_invalidate_range_start(src, mmun_start, mmun_end, MMU_COW); + mmu_notifier_invalidate_range_start(src, vma, mmun_start, mmun_end, MMU_COW); for (addr = vma->vm_start; addr < vma->vm_end; addr += sz) { spinlock_t *src_ptl, *dst_ptl; @@ -2574,7 +2574,7 @@ int copy_hugetlb_page_range(struct mm_struct *dst, struct mm_struct *src, } if (cow) - mmu_notifier_invalidate_range_end(src, mmun_start, mmun_end, MMU_COW); + mmu_notifier_invalidate_range_end(src, vma, mmun_start, mmun_end, MMU_COW); return ret; } @@ -2626,7 +2626,7 @@ void __unmap_hugepage_range(struct mmu_gather *tlb, struct vm_area_struct *vma, BUG_ON(end & ~huge_page_mask(h)); tlb_start_vma(tlb, vma); - mmu_notifier_invalidate_range_start(mm, mmun_start, mmun_end, MMU_UNMAP); + mmu_notifier_invalidate_range_start(mm, vma, mmun_start, mmun_end, MMU_UNMAP); again: for (address = start; address < end; address += sz) { ptep = huge_pte_offset(mm, address); @@ -2697,7 +2697,7 @@ unlock: if (address < end && !ref_page) goto again; } - mmu_notifier_invalidate_range_end(mm, mmun_start, mmun_end, MMU_UNMAP); + mmu_notifier_invalidate_range_end(mm, vma, mmun_start, mmun_end, MMU_UNMAP); tlb_end_vma(tlb, vma); } @@ -2884,7 +2884,7 @@ retry_avoidcopy: mmun_start = address & huge_page_mask(h); mmun_end = mmun_start + huge_page_size(h); - mmu_notifier_invalidate_range_start(mm, mmun_start, mmun_end, MMU_UNMAP); + mmu_notifier_invalidate_range_start(mm, vma, mmun_start, mmun_end, MMU_UNMAP); /* * Retake the page table lock to check for racing updates * before the page tables are altered @@ -2904,7 +2904,7 @@ retry_avoidcopy: new_page = old_page; } spin_unlock(ptl); - mmu_notifier_invalidate_range_end(mm, mmun_start, mmun_end, MMU_UNMAP); + mmu_notifier_invalidate_range_end(mm, vma, mmun_start, mmun_end, MMU_UNMAP); page_cache_release(new_page); page_cache_release(old_page); @@ -3342,7 +3342,7 @@ unsigned long hugetlb_change_protection(struct vm_area_struct *vma, BUG_ON(address >= end); flush_cache_range(vma, address, end); - mmu_notifier_invalidate_range_start(mm, start, end, action); + mmu_notifier_invalidate_range_start(mm, vma, start, end, action); mutex_lock(&vma->vm_file->f_mapping->i_mmap_mutex); for (; address < end; address += huge_page_size(h)) { spinlock_t *ptl; @@ -3372,7 +3372,7 @@ unsigned long hugetlb_change_protection(struct vm_area_struct *vma, */ flush_tlb_range(vma, start, end); mutex_unlock(&vma->vm_file->f_mapping->i_mmap_mutex); - mmu_notifier_invalidate_range_end(mm, start, end, action); + mmu_notifier_invalidate_range_end(mm, vma, start, end, action); return pages << h->order; } diff --git a/mm/ksm.c b/mm/ksm.c index 6a32bc4..3752820 100644 --- a/mm/ksm.c +++ b/mm/ksm.c @@ -872,7 +872,7 @@ static int write_protect_page(struct vm_area_struct *vma, struct page *page, mmun_start = addr; mmun_end = addr + PAGE_SIZE; - mmu_notifier_invalidate_range_start(mm, mmun_start, mmun_end, MMU_KSM_RONLY); + mmu_notifier_invalidate_range_start(mm, vma, mmun_start, mmun_end, MMU_KSM_RONLY); ptep = page_check_address(page, mm, addr, &ptl, 0); if (!ptep) @@ -912,7 +912,7 @@ static int write_protect_page(struct vm_area_struct *vma, struct page *page, out_unlock: pte_unmap_unlock(ptep, ptl); out_mn: - mmu_notifier_invalidate_range_end(mm, mmun_start, mmun_end, MMU_KSM_RONLY); + mmu_notifier_invalidate_range_end(mm, vma, mmun_start, mmun_end, MMU_KSM_RONLY); out: return err; } @@ -949,7 +949,7 @@ static int replace_page(struct vm_area_struct *vma, struct page *page, mmun_start = addr; mmun_end = addr + PAGE_SIZE; - mmu_notifier_invalidate_range_start(mm, mmun_start, mmun_end, MMU_KSM); + mmu_notifier_invalidate_range_start(mm, vma, mmun_start, mmun_end, MMU_KSM); ptep = pte_offset_map_lock(mm, pmd, addr, &ptl); if (!pte_same(*ptep, orig_pte)) { @@ -972,7 +972,7 @@ static int replace_page(struct vm_area_struct *vma, struct page *page, pte_unmap_unlock(ptep, ptl); err = 0; out_mn: - mmu_notifier_invalidate_range_end(mm, mmun_start, mmun_end, MMU_KSM); + mmu_notifier_invalidate_range_end(mm, vma, mmun_start, mmun_end, MMU_KSM); out: return err; } diff --git a/mm/memory.c b/mm/memory.c index 55d4e91..33f2028 100644 --- a/mm/memory.c +++ b/mm/memory.c @@ -1049,7 +1049,7 @@ int copy_page_range(struct mm_struct *dst_mm, struct mm_struct *src_mm, mmun_start = addr; mmun_end = end; if (is_cow) - mmu_notifier_invalidate_range_start(src_mm, mmun_start, + mmu_notifier_invalidate_range_start(src_mm, vma, mmun_start, mmun_end, MMU_COW); ret = 0; @@ -1067,7 +1067,7 @@ int copy_page_range(struct mm_struct *dst_mm, struct mm_struct *src_mm, } while (dst_pgd++, src_pgd++, addr = next, addr != end); if (is_cow) - mmu_notifier_invalidate_range_end(src_mm, mmun_start, mmun_end, + mmu_notifier_invalidate_range_end(src_mm, vma, mmun_start, mmun_end, MMU_COW); return ret; } @@ -1374,10 +1374,17 @@ void unmap_vmas(struct mmu_gather *tlb, { struct mm_struct *mm = vma->vm_mm; - mmu_notifier_invalidate_range_start(mm, start_addr, end_addr, MMU_MUNMAP); - for ( ; vma && vma->vm_start < end_addr; vma = vma->vm_next) + for ( ; vma && vma->vm_start < end_addr; vma = vma->vm_next) { + mmu_notifier_invalidate_range_start(mm, vma, + max(start_addr, vma->vm_start), + min(end_addr, vma->vm_end), + MMU_MUNMAP); unmap_single_vma(tlb, vma, start_addr, end_addr, NULL); - mmu_notifier_invalidate_range_end(mm, start_addr, end_addr, MMU_MUNMAP); + mmu_notifier_invalidate_range_end(mm, vma, + max(start_addr, vma->vm_start), + min(end_addr, vma->vm_end), + MMU_MUNMAP); + } } /** @@ -1399,10 +1406,17 @@ void zap_page_range(struct vm_area_struct *vma, unsigned long start, lru_add_drain(); tlb_gather_mmu(&tlb, mm, start, end); update_hiwater_rss(mm); - mmu_notifier_invalidate_range_start(mm, start, end, MMU_MUNMAP); - for ( ; vma && vma->vm_start < end; vma = vma->vm_next) + for ( ; vma && vma->vm_start < end; vma = vma->vm_next) { + mmu_notifier_invalidate_range_start(mm, vma, + max(start, vma->vm_start), + min(end, vma->vm_end), + MMU_MUNMAP); unmap_single_vma(&tlb, vma, start, end, details); - mmu_notifier_invalidate_range_end(mm, start, end, MMU_MUNMAP); + mmu_notifier_invalidate_range_end(mm, vma, + max(start, vma->vm_start), + min(end, vma->vm_end), + MMU_MUNMAP); + } tlb_finish_mmu(&tlb, start, end); } @@ -1425,9 +1439,9 @@ static void zap_page_range_single(struct vm_area_struct *vma, unsigned long addr lru_add_drain(); tlb_gather_mmu(&tlb, mm, address, end); update_hiwater_rss(mm); - mmu_notifier_invalidate_range_start(mm, address, end, MMU_MUNMAP); + mmu_notifier_invalidate_range_start(mm, vma, address, end, MMU_MUNMAP); unmap_single_vma(&tlb, vma, address, end, details); - mmu_notifier_invalidate_range_end(mm, address, end, MMU_MUNMAP); + mmu_notifier_invalidate_range_end(mm, vma, address, end, MMU_MUNMAP); tlb_finish_mmu(&tlb, address, end); } @@ -2210,7 +2224,7 @@ gotten: mmun_start = address & PAGE_MASK; mmun_end = mmun_start + PAGE_SIZE; - mmu_notifier_invalidate_range_start(mm, mmun_start, mmun_end, MMU_FAULT_WP); + mmu_notifier_invalidate_range_start(mm, vma, mmun_start, mmun_end, MMU_FAULT_WP); /* * Re-check the pte - we dropped the lock @@ -2279,7 +2293,7 @@ gotten: unlock: pte_unmap_unlock(page_table, ptl); if (mmun_end > mmun_start) - mmu_notifier_invalidate_range_end(mm, mmun_start, mmun_end, MMU_FAULT_WP); + mmu_notifier_invalidate_range_end(mm, vma, mmun_start, mmun_end, MMU_FAULT_WP); if (old_page) { /* * Don't let another task, with possibly unlocked vma, diff --git a/mm/migrate.c b/mm/migrate.c index 01cd98a..6b2797d 100644 --- a/mm/migrate.c +++ b/mm/migrate.c @@ -1827,12 +1827,12 @@ int migrate_misplaced_transhuge_page(struct mm_struct *mm, WARN_ON(PageLRU(new_page)); /* Recheck the target PMD */ - mmu_notifier_invalidate_range_start(mm, mmun_start, mmun_end, MMU_MIGRATE); + mmu_notifier_invalidate_range_start(mm, vma, mmun_start, mmun_end, MMU_MIGRATE); ptl = pmd_lock(mm, pmd); if (unlikely(!pmd_same(*pmd, entry) || page_count(page) != 2)) { fail_putback: spin_unlock(ptl); - mmu_notifier_invalidate_range_end(mm, mmun_start, mmun_end, MMU_MIGRATE); + mmu_notifier_invalidate_range_end(mm, vma, mmun_start, mmun_end, MMU_MIGRATE); /* Reverse changes made by migrate_page_copy() */ if (TestClearPageActive(new_page)) @@ -1898,7 +1898,7 @@ fail_putback: */ mem_cgroup_end_migration(memcg, page, new_page, true); spin_unlock(ptl); - mmu_notifier_invalidate_range_end(mm, mmun_start, mmun_end, MMU_MIGRATE); + mmu_notifier_invalidate_range_end(mm, vma, mmun_start, mmun_end, MMU_MIGRATE); /* Take an "isolate" reference and put new page on the LRU. */ get_page(new_page); diff --git a/mm/mmu_notifier.c b/mm/mmu_notifier.c index a906744..0b0e1ca 100644 --- a/mm/mmu_notifier.c +++ b/mm/mmu_notifier.c @@ -139,6 +139,7 @@ void __mmu_notifier_change_pte(struct mm_struct *mm, } void __mmu_notifier_invalidate_page(struct mm_struct *mm, + struct vm_area_struct *vma, unsigned long address, enum mmu_action action) { @@ -148,12 +149,13 @@ void __mmu_notifier_invalidate_page(struct mm_struct *mm, id = srcu_read_lock(&srcu); hlist_for_each_entry_rcu(mn, &mm->mmu_notifier_mm->list, hlist) { if (mn->ops->invalidate_page) - mn->ops->invalidate_page(mn, mm, address, action); + mn->ops->invalidate_page(mn, mm, vma, address, action); } srcu_read_unlock(&srcu, id); } void __mmu_notifier_invalidate_range_start(struct mm_struct *mm, + struct vm_area_struct *vma, unsigned long start, unsigned long end, enum mmu_action action) @@ -165,13 +167,14 @@ void __mmu_notifier_invalidate_range_start(struct mm_struct *mm, id = srcu_read_lock(&srcu); hlist_for_each_entry_rcu(mn, &mm->mmu_notifier_mm->list, hlist) { if (mn->ops->invalidate_range_start) - mn->ops->invalidate_range_start(mn, mm, start, end, action); + mn->ops->invalidate_range_start(mn, mm, vma, start, end, action); } srcu_read_unlock(&srcu, id); } EXPORT_SYMBOL_GPL(__mmu_notifier_invalidate_range_start); void __mmu_notifier_invalidate_range_end(struct mm_struct *mm, + struct vm_area_struct *vma, unsigned long start, unsigned long end, enum mmu_action action) @@ -182,7 +185,7 @@ void __mmu_notifier_invalidate_range_end(struct mm_struct *mm, id = srcu_read_lock(&srcu); hlist_for_each_entry_rcu(mn, &mm->mmu_notifier_mm->list, hlist) { if (mn->ops->invalidate_range_end) - mn->ops->invalidate_range_end(mn, mm, start, end, action); + mn->ops->invalidate_range_end(mn, mm, vma, start, end, action); } srcu_read_unlock(&srcu, id); } diff --git a/mm/mprotect.c b/mm/mprotect.c index 6c2846f..ebe92d1 100644 --- a/mm/mprotect.c +++ b/mm/mprotect.c @@ -158,7 +158,7 @@ static inline unsigned long change_pmd_range(struct vm_area_struct *vma, /* invoke the mmu notifier if the pmd is populated */ if (!mni_start) { mni_start = addr; - mmu_notifier_invalidate_range_start(mm, mni_start, end, action); + mmu_notifier_invalidate_range_start(mm, vma, mni_start, end, action); } if (pmd_trans_huge(*pmd)) { @@ -186,7 +186,7 @@ static inline unsigned long change_pmd_range(struct vm_area_struct *vma, } while (pmd++, addr = next, addr != end); if (mni_start) - mmu_notifier_invalidate_range_end(mm, mni_start, end, action); + mmu_notifier_invalidate_range_end(mm, vma, mni_start, end, action); if (nr_huge_updates) count_vm_numa_events(NUMA_HUGE_PTE_UPDATES, nr_huge_updates); diff --git a/mm/mremap.c b/mm/mremap.c index ceb8a47..0b008a0 100644 --- a/mm/mremap.c +++ b/mm/mremap.c @@ -177,7 +177,7 @@ unsigned long move_page_tables(struct vm_area_struct *vma, mmun_start = old_addr; mmun_end = old_end; - mmu_notifier_invalidate_range_start(vma->vm_mm, mmun_start, mmun_end, MMU_MREMAP); + mmu_notifier_invalidate_range_start(vma->vm_mm, vma, mmun_start, mmun_end, MMU_MREMAP); for (; old_addr < old_end; old_addr += extent, new_addr += extent) { cond_resched(); @@ -228,7 +228,7 @@ unsigned long move_page_tables(struct vm_area_struct *vma, if (likely(need_flush)) flush_tlb_range(vma, old_end-len, old_addr); - mmu_notifier_invalidate_range_end(vma->vm_mm, mmun_start, mmun_end, MMU_MREMAP); + mmu_notifier_invalidate_range_end(vma->vm_mm, vma, mmun_start, mmun_end, MMU_MREMAP); return len + old_addr - old_end; /* how much done */ } diff --git a/mm/rmap.c b/mm/rmap.c index 3db669e..383970a 100644 --- a/mm/rmap.c +++ b/mm/rmap.c @@ -836,7 +836,7 @@ static int page_mkclean_one(struct page *page, struct vm_area_struct *vma, pte_unmap_unlock(pte, ptl); if (ret) { - mmu_notifier_invalidate_page(mm, address, MMU_FILE_WB); + mmu_notifier_invalidate_page(mm, vma, address, MMU_FILE_WB); (*cleaned)++; } out: @@ -1258,7 +1258,7 @@ static int try_to_unmap_one(struct page *page, struct vm_area_struct *vma, out_unmap: pte_unmap_unlock(pte, ptl); if (ret != SWAP_FAIL && !(flags & TTU_MUNLOCK)) - mmu_notifier_invalidate_page(mm, address, action); + mmu_notifier_invalidate_page(mm, vma, address, action); out: return ret; @@ -1350,7 +1350,7 @@ static int try_to_unmap_cluster(unsigned long cursor, unsigned int *mapcount, mmun_start = address; mmun_end = end; - mmu_notifier_invalidate_range_start(mm, mmun_start, mmun_end, action); + mmu_notifier_invalidate_range_start(mm, vma, mmun_start, mmun_end, action); /* * If we can acquire the mmap_sem for read, and vma is VM_LOCKED, @@ -1415,7 +1415,7 @@ static int try_to_unmap_cluster(unsigned long cursor, unsigned int *mapcount, (*mapcount)--; } pte_unmap_unlock(pte - 1, ptl); - mmu_notifier_invalidate_range_end(mm, mmun_start, mmun_end, action); + mmu_notifier_invalidate_range_end(mm, vma, mmun_start, mmun_end, action); if (locked_vma) up_read(&vma->vm_mm->mmap_sem); return ret; diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c index eb5a635..1bd7117 100644 --- a/virt/kvm/kvm_main.c +++ b/virt/kvm/kvm_main.c @@ -262,6 +262,7 @@ static inline struct kvm *mmu_notifier_to_kvm(struct mmu_notifier *mn) static void kvm_mmu_notifier_invalidate_page(struct mmu_notifier *mn, struct mm_struct *mm, + struct vm_area_struct *vma, unsigned long address, enum mmu_action action) { @@ -318,6 +319,7 @@ static void kvm_mmu_notifier_change_pte(struct mmu_notifier *mn, static void kvm_mmu_notifier_invalidate_range_start(struct mmu_notifier *mn, struct mm_struct *mm, + struct vm_area_struct *vma, unsigned long start, unsigned long end, enum mmu_action action) @@ -345,6 +347,7 @@ static void kvm_mmu_notifier_invalidate_range_start(struct mmu_notifier *mn, static void kvm_mmu_notifier_invalidate_range_end(struct mmu_notifier *mn, struct mm_struct *mm, + struct vm_area_struct *vma, unsigned long start, unsigned long end, enum mmu_action action) -- 1.9.0 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/