Re: [PATCH v5 1/4] mm/memory-failure: refactor log format in soft offline code

[Miaohe Lin <linmiaohe@huawei.com>]

On 2024/6/25 0:33, Jiaqi Yan wrote:
> Logs from soft_offline_page and soft_offline_in_use_page have
> different formats than majority of the memory failure code:
> 
>   "Memory failure: 0x${pfn}: ${lower_case_message}"
> 
> Convert them to the following format:
> 
>   "Soft offline: 0x${pfn}: ${lower_case_message}"
> 
> No functional change in this commit.
> 
> Signed-off-by: Jiaqi Yan <jiaqiyan@google.com>
> ---
>  mm/memory-failure.c | 15 +++++++++------
>  1 file changed, 9 insertions(+), 6 deletions(-)
> 
> diff --git a/mm/memory-failure.c b/mm/memory-failure.c
> index d3c830e817e3..2a097af7da0e 100644
> --- a/mm/memory-failure.c
> +++ b/mm/memory-failure.c
> @@ -2631,6 +2631,9 @@ int unpoison_memory(unsigned long pfn)
>  }
>  EXPORT_SYMBOL(unpoison_memory);
>  
> +#undef pr_fmt
> +#define pr_fmt(fmt) "Soft offline: " fmt
> +
>  static bool mf_isolate_folio(struct folio *folio, struct list_head *pagelist)
>  {
>  	bool isolated = false;
> @@ -2686,7 +2689,7 @@ static int soft_offline_in_use_page(struct page *page)
>  
>  	if (!huge && folio_test_large(folio)) {
>  		if (try_to_split_thp_page(page)) {
> -			pr_info("soft offline: %#lx: thp split failed\n", pfn);
> +			pr_info("%#lx: thp split failed\n", pfn);
>  			return -EBUSY;
>  		}
>  		folio = page_folio(page);
> @@ -2698,7 +2701,7 @@ static int soft_offline_in_use_page(struct page *page)
>  	if (PageHWPoison(page)) {
>  		folio_unlock(folio);
>  		folio_put(folio);
> -		pr_info("soft offline: %#lx page already poisoned\n", pfn);
> +		pr_info("%#lx page already poisoned\n", pfn);

Again, it's better to be "%#lx: page" to make log format consistent.
Thanks.
.