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SubjectRe: [PATCH v2 1/1] mm: Always release pages to the buddy allocator in memblock_free_late().

* Aaron Thompson <dev@aaront.org> wrote:

> For example, on an Amazon EC2 t3.micro VM (1 GB) booting via EFI:
>
> v6.2-rc2:
> # grep -E 'Node|spanned|present|managed' /proc/zoneinfo
> Node 0, zone DMA
> spanned 4095
> present 3999
> managed 3840
> Node 0, zone DMA32
> spanned 246652
> present 245868
> managed 178867
>
> v6.2-rc2 + patch:
> # grep -E 'Node|spanned|present|managed' /proc/zoneinfo
> Node 0, zone DMA
> spanned 4095
> present 3999
> managed 3840
> Node 0, zone DMA32
> spanned 246652
> present 245868
> managed 222816 # +43,949 pages

[ Note the annotation I added to the output - might be useful in the changelog too. ]

So this patch adds around +17% of RAM to this 1 GB virtual system? That
looks rather significant ...

Thanks,

Ingo

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