From 7d4a8be0c4b2b7ffb367929d2b352651f083806b Mon Sep 17 00:00:00 2001 From: Alistair Popple Date: Tue, 10 Jan 2023 13:57:22 +1100 Subject: mm/mmu_notifier: remove unused mmu_notifier_range_update_to_read_only export mmu_notifier_range_update_to_read_only() was originally introduced in commit c6d23413f81b ("mm/mmu_notifier: mmu_notifier_range_update_to_read_only() helper") as an optimisation for device drivers that know a range has only been mapped read-only. However there are no users of this feature so remove it. As it is the only user of the struct mmu_notifier_range.vma field remove that also. Link: https://lkml.kernel.org/r/20230110025722.600912-1-apopple@nvidia.com Signed-off-by: Alistair Popple Acked-by: Mike Rapoport (IBM) Reviewed-by: Jason Gunthorpe Reviewed-by: Christoph Hellwig Reviewed-by: Mike Kravetz Cc: Ira Weiny Cc: Jerome Glisse Cc: John Hubbard Cc: Ralph Campbell Signed-off-by: Andrew Morton --- mm/hugetlb.c | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-) (limited to 'mm/hugetlb.c') diff --git a/mm/hugetlb.c b/mm/hugetlb.c index 6fe65f14d33b..273a6522aa4c 100644 --- a/mm/hugetlb.c +++ b/mm/hugetlb.c @@ -4966,7 +4966,7 @@ int copy_hugetlb_page_range(struct mm_struct *dst, struct mm_struct *src, int ret = 0; if (cow) { - mmu_notifier_range_init(&range, MMU_NOTIFY_CLEAR, 0, src_vma, src, + mmu_notifier_range_init(&range, MMU_NOTIFY_CLEAR, 0, src, src_vma->vm_start, src_vma->vm_end); mmu_notifier_invalidate_range_start(&range); @@ -5177,7 +5177,7 @@ int move_hugetlb_page_tables(struct vm_area_struct *vma, struct mmu_notifier_range range; bool shared_pmd = false; - mmu_notifier_range_init(&range, MMU_NOTIFY_CLEAR, 0, vma, mm, old_addr, + mmu_notifier_range_init(&range, MMU_NOTIFY_CLEAR, 0, mm, old_addr, old_end); adjust_range_if_pmd_sharing_possible(vma, &range.start, &range.end); /* @@ -5391,7 +5391,7 @@ void unmap_hugepage_range(struct vm_area_struct *vma, unsigned long start, struct mmu_notifier_range range; struct mmu_gather tlb; - mmu_notifier_range_init(&range, MMU_NOTIFY_CLEAR, 0, vma, vma->vm_mm, + mmu_notifier_range_init(&range, MMU_NOTIFY_CLEAR, 0, vma->vm_mm, start, end); adjust_range_if_pmd_sharing_possible(vma, &range.start, &range.end); mmu_notifier_invalidate_range_start(&range); @@ -5597,7 +5597,7 @@ retry_avoidcopy: pages_per_huge_page(h)); __SetPageUptodate(new_page); - mmu_notifier_range_init(&range, MMU_NOTIFY_CLEAR, 0, vma, mm, haddr, + mmu_notifier_range_init(&range, MMU_NOTIFY_CLEAR, 0, mm, haddr, haddr + huge_page_size(h)); mmu_notifier_invalidate_range_start(&range); @@ -6637,7 +6637,7 @@ long hugetlb_change_protection(struct vm_area_struct *vma, * range if PMD sharing is possible. */ mmu_notifier_range_init(&range, MMU_NOTIFY_PROTECTION_VMA, - 0, vma, mm, start, end); + 0, mm, start, end); adjust_range_if_pmd_sharing_possible(vma, &range.start, &range.end); BUG_ON(address >= end); @@ -7368,7 +7368,7 @@ static void hugetlb_unshare_pmds(struct vm_area_struct *vma, * No need to call adjust_range_if_pmd_sharing_possible(), because * we have already done the PUD_SIZE alignment. */ - mmu_notifier_range_init(&range, MMU_NOTIFY_CLEAR, 0, vma, mm, + mmu_notifier_range_init(&range, MMU_NOTIFY_CLEAR, 0, mm, start, end); mmu_notifier_invalidate_range_start(&range); hugetlb_vma_lock_write(vma); -- cgit v1.2.3