Messages in this thread | | | Date | Thu, 9 Jun 2022 13:18:50 +0100 | From | Matthew Wilcox <> | Subject | Re: [mm] 9b12e49e9b: BUG:Bad_page_state_in_process |
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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.
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