On 6/9/2022 8:18 PM, Matthew Wilcox wrote:
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.
Right, will do in next version. Thanks.
