Re: [PATCH 11/12] fs/proc/page: clarify comment in get_max_dump_pfn()
From: David Hildenbrand (Arm)
Date: Thu Sep 10 2026 - 11:23:58 EST
On 9/10/26 16:41, Lorenzo Stoakes (ARM) wrote:
> On Wed, Sep 09, 2026 at 03:33:04PM +0200, David Hildenbrand (Arm) wrote:
>> pfn_to_online_page() will only succeed on some PFNs within the same
>> section, not necessarily all. Let's make that clearer.
>>
>> Signed-off-by: David Hildenbrand (Arm) <david@xxxxxxxxxx>
>
> Nit on comment below, but LGTM so:
>
> Acked-by: Lorenzo Stoakes (ARM) <ljs@xxxxxxxxxx>
>
>> ---
>> fs/proc/page.c | 7 +++----
>> 1 file changed, 3 insertions(+), 4 deletions(-)
>>
>> diff --git a/fs/proc/page.c b/fs/proc/page.c
>> index 260772b20bd99..6856ff3e3cf28 100644
>> --- a/fs/proc/page.c
>> +++ b/fs/proc/page.c
>> @@ -31,10 +31,9 @@ static inline unsigned long get_max_dump_pfn(void)
>> {
>> #ifdef CONFIG_SPARSEMEM
>> /*
>> - * The memmap of early sections is completely populated and marked
>> - * online even if max_pfn does not fall on a section boundary -
>> - * pfn_to_online_page() will succeed on all pages. Allow inspecting
>> - * these memmaps.
>> + * If max_pfn does not fall on a section boundary, pfn_to_online_page()
>> + * can succeed on PFNs beyond max_pfn within the same section. Allow
>> + * inspecting these memmaps.
>
> 'Allow inspection of' these memmaps is clearer I think. But this odd turn of
> phrase existed before this change also :)
Done, thanks!
--
Cheers,
David