Re: [PATCH 1/2] thp: fix anononymous page accounting in fallback path for COW of HZP
From: Bob Liu <hidden>
Date: 2012-12-03 03:14:40
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On Fri, Nov 30, 2012 at 11:03 PM, Kirill A. Shutemov [off-list ref] wrote:
From: "Kirill A. Shutemov" <redacted> Don't forget to account newly allocated page in fallback path for copy-on-write of huge zero page.
What about fallback path in do_huge_pmd_wp_page_fallback()? I think we should also account newly allocated page in it.
quoted hunk ↗ jump to hunk
Signed-off-by: Kirill A. Shutemov <redacted> --- mm/huge_memory.c | 1 + 1 file changed, 1 insertion(+)diff --git a/mm/huge_memory.c b/mm/huge_memory.c index 57f0024..9d6f521 100644 --- a/mm/huge_memory.c +++ b/mm/huge_memory.c@@ -1164,6 +1164,7 @@ static int do_huge_pmd_wp_zero_page_fallback(struct mm_struct *mm, pmd_populate(mm, pmd, pgtable); spin_unlock(&mm->page_table_lock); put_huge_zero_page(); + inc_mm_counter(mm, MM_ANONPAGES); mmu_notifier_invalidate_range_end(mm, mmun_start, mmun_end); --1.7.11.7
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