From: Matthew Wilcox <willy@infradead.org>
To: Baolin Wang <baolin.wang@linux.alibaba.com>
Cc: kernel test robot <oliver.sang@intel.com>,
0day robot <lkp@intel.com>, LKML <linux-kernel@vger.kernel.org>,
linux-csky@vger.kernel.org, openrisc@lists.librecores.org,
linux-arch@vger.kernel.org, lkp@lists.01.org,
akpm@linux-foundation.org, linux-mm@kvack.org
Subject: Re: [mm] 9b12e49e9b: BUG:Bad_page_state_in_process
Date: Thu, 9 Jun 2022 13:18:50 +0100 [thread overview]
Message-ID: <YqHlKj5LbmtYGWUy@casper.infradead.org> (raw)
In-Reply-To: <d64da0da-9f71-3ae9-4d72-00b0c42fce5e@linux.alibaba.com>
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.
next prev parent reply other threads:[~2022-06-09 12:19 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-06-04 1:32 [RFC PATCH 0/3] Add PUD and kernel PTE level pagetable account Baolin Wang
2022-06-04 1:32 ` [RFC PATCH 1/3] mm: Factor out the pagetable pages account into new helper function Baolin Wang
2022-06-04 1:32 ` [RFC PATCH 2/3] mm: Add PUD level pagetable account Baolin Wang
2022-06-04 1:32 ` [RFC PATCH 3/3] mm: Add kernel PTE level pagetable pages account Baolin Wang
2022-06-08 14:38 ` [mm] 9b12e49e9b: BUG:Bad_page_state_in_process kernel test robot
2022-06-08 15:07 ` Matthew Wilcox
2022-06-09 4:45 ` Baolin Wang
2022-06-09 4:42 ` Baolin Wang
2022-06-09 12:18 ` Matthew Wilcox [this message]
2022-06-10 3:58 ` Baolin Wang
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