Re: [PATCH] mm/mm_init.c: only align start of ZONE_MOVALBE on nodes with memory

[Wei Yang <richard.weiyang@gmail.com>]

On Tue, Feb 11, 2025 at 04:26:26PM +0100, David Hildenbrand wrote:
>On 11.02.25 09:29, Wei Yang wrote:
>> At the beginning of find_zone_movable_pfns_for_nodes(), it has properly
>> set node_states[N_MEMORY] in early_calculate_totalpages().
>> 
>> Instead of iterate on all possible nodes, we can just do the alignment
>> on nodes with memory.
>> 
>> Signed-off-by: Wei Yang <richard.weiyang@gmail.com>
>> ---
>>   mm/mm_init.c | 2 +-
>>   1 file changed, 1 insertion(+), 1 deletion(-)
>> 
>> diff --git a/mm/mm_init.c b/mm/mm_init.c
>> index 35754a8ae6c0..3ec50b5fda12 100644
>> --- a/mm/mm_init.c
>> +++ b/mm/mm_init.c
>> @@ -547,7 +547,7 @@ static void __init find_zone_movable_pfns_for_nodes(void)
>>   out2:
>>   	/* Align start of ZONE_MOVABLE on all nids to MAX_ORDER_NR_PAGES */
>> -	for (nid = 0; nid < MAX_NUMNODES; nid++) {
>> +	for_each_node_state(nid, N_MEMORY) {
>>   		unsigned long start_pfn, end_pfn;
>>   		zone_movable_pfn[nid] =
>
>I think this should work
>
>Acked-by: David Hildenbrand <david@redhat.com>
>

Thanks :-)

>-- 
>Cheers,
>
>David / dhildenb

-- 
Wei Yang
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