On Thu, Apr 07, 2022 at 11:46:13AM +0200, David Hildenbrand wrote:
>On 07.04.22 11:32, Juergen Gross wrote:
>> Since commit 9d3be21bf9c0 ("mm, page_alloc: simplify zonelist
>> initialization") only zones with free memory are included in a built
>> zonelist. This is problematic when e.g. all memory of a zone has been
>> ballooned out.
>>
>> Use populated_zone() when building a zonelist as it has been done
>> before that commit.
>>
>> Cc: stable@xxxxxxxxxxxxxxx
>> Fixes: 9d3be21bf9c0 ("mm, page_alloc: simplify zonelist initialization")
>> Reported-by: Marek Marczykowski-G??recki <marmarek@xxxxxxxxxxxxxxxxxxxxxx>
>> Signed-off-by: Juergen Gross <jgross@xxxxxxxx>
>> ---
>> mm/page_alloc.c | 2 +-
>> 1 file changed, 1 insertion(+), 1 deletion(-)
>>
>> diff --git a/mm/page_alloc.c b/mm/page_alloc.c
>> index bdc8f60ae462..3d0662af3289 100644
>> --- a/mm/page_alloc.c
>> +++ b/mm/page_alloc.c
>> @@ -6128,7 +6128,7 @@ static int build_zonerefs_node(pg_data_t *pgdat, struct zoneref *zonerefs)
>> do {
>> zone_type--;
>> zone = pgdat->node_zones + zone_type;
>> - if (managed_zone(zone)) {
>> + if (populated_zone(zone)) {
>> zoneref_set_zone(zone, &zonerefs[nr_zones++]);
>> check_highest_zone(zone_type);
>> }
>
>Let's see if we have to find another way to properly handle fadump.
>
>Acked-by: David Hildenbrand <david@xxxxxxxxxx>
Ok, I see the point.
Reviewed-by: Wei Yang <richard.weiyang@xxxxxxxxx>
>
>--
>Thanks,
>
>David / dhildenb
--
Wei Yang
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