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    Subject[PATCH v4 29/66] parisc: Remove mmap linked list from cache handling
    Date
    From: "Liam R. Howlett" <Liam.Howlett@Oracle.com>

    Use the VMA iterator instead.

    Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
    Signed-off-by: Liam R. Howlett <Liam.Howlett@Oracle.com>
    ---
    arch/parisc/kernel/cache.c | 9 ++++++---
    1 file changed, 6 insertions(+), 3 deletions(-)

    diff --git a/arch/parisc/kernel/cache.c b/arch/parisc/kernel/cache.c
    index 94150b91c96f..c3a8d29b6f9f 100644
    --- a/arch/parisc/kernel/cache.c
    +++ b/arch/parisc/kernel/cache.c
    @@ -519,9 +519,11 @@ static inline unsigned long mm_total_size(struct mm_struct *mm)
    {
    struct vm_area_struct *vma;
    unsigned long usize = 0;
    + VMA_ITERATOR(vmi, mm, 0);

    - for (vma = mm->mmap; vma; vma = vma->vm_next)
    + for_each_vma(vmi, vma)
    usize += vma->vm_end - vma->vm_start;
    +
    return usize;
    }

    @@ -570,6 +572,7 @@ static void flush_user_cache_tlb(struct vm_area_struct *vma,
    void flush_cache_mm(struct mm_struct *mm)
    {
    struct vm_area_struct *vma;
    + VMA_ITERATOR(vmi, mm, 0);

    /* Flushing the whole cache on each cpu takes forever on
    rp3440, etc. So, avoid it if the mm isn't too big. */
    @@ -583,13 +586,13 @@ void flush_cache_mm(struct mm_struct *mm)

    preempt_disable();
    if (mm->context == mfsp(3)) {
    - for (vma = mm->mmap; vma; vma = vma->vm_next)
    + for_each_vma(vmi, vma)
    flush_user_cache_tlb(vma, vma->vm_start, vma->vm_end);
    preempt_enable();
    return;
    }

    - for (vma = mm->mmap; vma; vma = vma->vm_next)
    + for_each_vma(vmi, vma)
    flush_cache_pages(vma, mm, vma->vm_start, vma->vm_end);
    preempt_enable();
    }
    --
    2.30.2
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