On Sun, May 12, 2013 at 9:23 AM, Kirill A. Shutemov
<kirill.shutemov@xxxxxxxxxxxxxxx> wrote:
> From: "Kirill A. Shutemov" <kirill.shutemov@xxxxxxxxxxxxxxx>
>
> Uncharge pages from correct counter.
>
> Signed-off-by: Kirill A. Shutemov <kirill.shutemov@xxxxxxxxxxxxxxx>
> ---
> mm/huge_memory.c | 4 +++-
> 1 file changed, 3 insertions(+), 1 deletion(-)
>
> diff --git a/mm/huge_memory.c b/mm/huge_memory.c
> index 7ad458d..a88f9b2 100644
> --- a/mm/huge_memory.c
> +++ b/mm/huge_memory.c
> @@ -1385,10 +1385,12 @@ int zap_huge_pmd(struct mmu_gather *tlb, struct vm_area_struct *vma,
> spin_unlock(&tlb->mm->page_table_lock);
> put_huge_zero_page();
> } else {
> + int member;
> page = pmd_page(orig_pmd);
Better _if_ member is determined before we touch rmap, conceptually?
> page_remove_rmap(page);
> VM_BUG_ON(page_mapcount(page) < 0);
> - add_mm_counter(tlb->mm, MM_ANONPAGES, -HPAGE_PMD_NR);
> + member = PageAnon(page) ? MM_ANONPAGES : MM_FILEPAGES;
> + add_mm_counter(tlb->mm, member, -HPAGE_PMD_NR);
> VM_BUG_ON(!PageHead(page));
> tlb->mm->nr_ptes--;
> spin_unlock(&tlb->mm->page_table_lock);
> --
> 1.7.10.4
>
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