Merge tag 'core-mm-2021-02-17' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull tlb gather updates from Ingo Molnar:
 "Theses fix MM (soft-)dirty bit management in the procfs code & clean
  up the TLB gather API"

* tag 'core-mm-2021-02-17' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/ldt: Use tlb_gather_mmu_fullmm() when freeing LDT page-tables
  tlb: arch: Remove empty __tlb_remove_tlb_entry() stubs
  tlb: mmu_gather: Remove start/end arguments from tlb_gather_mmu()
  tlb: mmu_gather: Introduce tlb_gather_mmu_fullmm()
  tlb: mmu_gather: Remove unused start/end arguments from tlb_finish_mmu()
  mm: proc: Invalidate TLB after clearing soft-dirty page state

1 files changed, 2 insertions, 16 deletions

diff --git a/mm/hugetlb.c b/mm/hugetlb.c
index 4bdb58ab14cb..905a7d549b00 100644
--- a/mm/hugetlb.c
+++ b/mm/hugetlb.c
@@ -4008,25 +4008,11 @@ void __unmap_hugepage_range_final(struct mmu_gather *tlb,
 void unmap_hugepage_range(struct vm_area_struct *vma, unsigned long start,
 			  unsigned long end, struct page *ref_page)
 {
-	struct mm_struct *mm;
 	struct mmu_gather tlb;
-	unsigned long tlb_start = start;
-	unsigned long tlb_end = end;
 
-	/*
-	 * If shared PMDs were possibly used within this vma range, adjust
-	 * start/end for worst case tlb flushing.
-	 * Note that we can not be sure if PMDs are shared until we try to
-	 * unmap pages.  However, we want to make sure TLB flushing covers
-	 * the largest possible range.
-	 */
-	adjust_range_if_pmd_sharing_possible(vma, &tlb_start, &tlb_end);
-
-	mm = vma->vm_mm;
-
-	tlb_gather_mmu(&tlb, mm, tlb_start, tlb_end);
+	tlb_gather_mmu(&tlb, vma->vm_mm);
 	__unmap_hugepage_range(&tlb, vma, start, end, ref_page);
-	tlb_finish_mmu(&tlb, tlb_start, tlb_end);
+	tlb_finish_mmu(&tlb);
 }
 
 /*