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    Subject[PATCH v10 39/69] um: remove vma linked list walk
    Date
    From: "Matthew Wilcox (Oracle)" <willy@infradead.org>

    Use the VMA iterator instead.

    Link: https://lkml.kernel.org/r/20220504011345.662299-24-Liam.Howlett@oracle.com
    Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
    Signed-off-by: Liam R. Howlett <Liam.Howlett@Oracle.com>
    Cc: Catalin Marinas <catalin.marinas@arm.com>
    Cc: David Howells <dhowells@redhat.com>
    Cc: SeongJae Park <sj@kernel.org>
    Cc: Vlastimil Babka <vbabka@suse.cz>
    Cc: Will Deacon <will@kernel.org>
    Cc: Davidlohr Bueso <dave@stgolabs.net>
    Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
    ---
    arch/um/kernel/tlb.c | 14 ++++++--------
    1 file changed, 6 insertions(+), 8 deletions(-)

    diff --git a/arch/um/kernel/tlb.c b/arch/um/kernel/tlb.c
    index bc38f79ca3a3..ad449173a1a1 100644
    --- a/arch/um/kernel/tlb.c
    +++ b/arch/um/kernel/tlb.c
    @@ -584,21 +584,19 @@ void flush_tlb_mm_range(struct mm_struct *mm, unsigned long start,

    void flush_tlb_mm(struct mm_struct *mm)
    {
    - struct vm_area_struct *vma = mm->mmap;
    + struct vm_area_struct *vma;
    + VMA_ITERATOR(vmi, mm, 0);

    - while (vma != NULL) {
    + for_each_vma(vmi, vma)
    fix_range(mm, vma->vm_start, vma->vm_end, 0);
    - vma = vma->vm_next;
    - }
    }

    void force_flush_all(void)
    {
    struct mm_struct *mm = current->mm;
    - struct vm_area_struct *vma = mm->mmap;
    + struct vm_area_struct *vma;
    + VMA_ITERATOR(vmi, mm, 0);

    - while (vma != NULL) {
    + for_each_vma(vmi, vma)
    fix_range(mm, vma->vm_start, vma->vm_end, 1);
    - vma = vma->vm_next;
    - }
    }
    --
    2.35.1
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