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    SubjectRe: [PATCH v4 29/66] parisc: Remove mmap linked list from cache handling
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    On 12/1/21 15:30, Liam Howlett wrote:
    > 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>

    Acked-by: Vlastimil Babka <vbabka@suse.cz>

    > ---
    > 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();
    > }

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