On Thu, Jun 09, 2022 at 12:42:16PM +0800, Baolin Wang wrote: > diff --git a/arch/x86/mm/pgtable.c b/arch/x86/mm/pgtable.c > index 6cccf52e156a..cae74e972426 100644 > --- a/arch/x86/mm/pgtable.c > +++ b/arch/x86/mm/pgtable.c > @@ -858,6 +858,7 @@ int pmd_free_pte_page(pmd_t *pmd, unsigned long addr) > /* INVLPG to clear all paging-structure caches */ > flush_tlb_kernel_range(addr, addr + PAGE_SIZE-1); > > + pgtable_clear_and_dec(virt_to_page(pte)); > free_page((unsigned long)pte); > > return 1; If you're going to call virt_to_page() here, you may as well cache the result and call __free_page(page) to avoid calling virt_to_page() twice.
