| Date | Fri, 15 Mar 2013 15:09:50 +0800 | Subject | Re: [PATCHv2, RFC 23/30] thp: prepare zap_huge_pmd() to uncharge file pages | From | Hillf Danton <> |
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On Fri, Mar 15, 2013 at 1:50 AM, Kirill A. Shutemov <kirill.shutemov@linux.intel.com> wrote: > From: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com> > > Uncharge pages from correct counter. > > Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> > --- > 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 a23da8b..34e0385 100644 > --- a/mm/huge_memory.c > +++ b/mm/huge_memory.c > @@ -1368,10 +1368,12 @@ 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 counter; s/counter/item/ ?
> page = pmd_page(orig_pmd); > page_remove_rmap(page); > VM_BUG_ON(page_mapcount(page) < 0); > - add_mm_counter(tlb->mm, MM_ANONPAGES, -HPAGE_PMD_NR); > + counter = PageAnon(page) ? MM_ANONPAGES : MM_FILEPAGES; > + add_mm_counter(tlb->mm, counter, -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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