Re: [PATCH v3 04/11] mm: Make page_mapped_in_vma conditional on CONFIG_MEMORY_FAILURE

[Miaohe Lin <linmiaohe@huawei.com>]

On 2024/4/13 3:35, Matthew Wilcox (Oracle) wrote:
> This function is only currently used by the memory-failure code, so
> we can omit it if we're not compiling in the memory-failure code.
> 
> Suggested-by: Miaohe Lin <linmiaohe@huawei.com>
> Reviewed-by: Jane Chu <jane.chu@oracle.com>
> Reviewed-by: Oscar Salvador <osalvador@suse.de>
> Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>

Acked-by: Miaohe Lin <linmiaohe@huawei.com>
Thanks.
.

> ---
>  mm/page_vma_mapped.c | 2 ++
>  1 file changed, 2 insertions(+)
> 
> diff --git a/mm/page_vma_mapped.c b/mm/page_vma_mapped.c
> index c202eab84936..ae5cc42aa208 100644
> --- a/mm/page_vma_mapped.c
> +++ b/mm/page_vma_mapped.c
> @@ -314,6 +314,7 @@ bool page_vma_mapped_walk(struct page_vma_mapped_walk *pvmw)
>  	return false;
>  }
>  
> +#ifdef CONFIG_MEMORY_FAILURE
>  /**
>   * page_mapped_in_vma - check whether a page is really mapped in a VMA
>   * @page: the page to test
> @@ -344,3 +345,4 @@ unsigned long page_mapped_in_vma(struct page *page, struct vm_area_struct *vma)
>  out:
>  	return pvmw.address;
>  }
> +#endif
>