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    Subject[PATCH v14 67/70] mm/vmscan: Use vma iterator instead of vm_next
    Date
    Use the vma iterator in in get_next_vma() instead of the linked list.

    Suggested-by: Yu Zhao <yuzhao@google.com>
    Signed-off-by: Liam R. Howlett <Liam.Howlett@oracle.com>
    ---
    mm/vmscan.c | 15 +++------------
    1 file changed, 3 insertions(+), 12 deletions(-)

    diff --git a/mm/vmscan.c b/mm/vmscan.c
    index 340b8a624f57..bb3256d07a43 100644
    --- a/mm/vmscan.c
    +++ b/mm/vmscan.c
    @@ -3776,23 +3776,14 @@ static bool get_next_vma(unsigned long mask, unsigned long size, struct mm_walk
    {
    unsigned long start = round_up(*vm_end, size);
    unsigned long end = (start | ~mask) + 1;
    + VMA_ITERATOR(vmi, args->mm, start);

    VM_WARN_ON_ONCE(mask & size);
    VM_WARN_ON_ONCE((start & mask) != (*vm_start & mask));

    - while (args->vma) {
    - if (start >= args->vma->vm_end) {
    - args->vma = args->vma->vm_next;
    + for_each_vma_range(vmi, args->vma, end) {
    + if (should_skip_vma(args->vma->vm_start, args->vma->vm_end, args))
    continue;
    - }
    -
    - if (end && end <= args->vma->vm_start)
    - return false;
    -
    - if (should_skip_vma(args->vma->vm_start, args->vma->vm_end, args)) {
    - args->vma = args->vma->vm_next;
    - continue;
    - }

    *vm_start = max(start, args->vma->vm_start);
    *vm_end = min(end - 1, args->vma->vm_end - 1) + 1;
    --
    2.35.1
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