Re: [PATCH v2 2/2] mm: vmscan: fix node reclaim ignoring swappiness parameter

[Ridong Chen]

On 7/16/2026 2:06 PM, Tao Cui wrote:
> Hi Ridong,
>
> Reproduced the bug and verified the fix in a QEMU x86_64 guest with
> CONFIG_MEMCG disabled. Global vm.swappiness pinned to 1, then:
>
>      echo "64M swappiness=<x>" > /sys/devices/system/node/node0/reclaim
>
>    swappiness= | buggy (anon/file)   | patched (anon/file)
>    ----------- | -------------------- | --------------------
>    max         |      0  /  16385     |  16292  /  0
>    200         |      2  /  16384     |  16837  /  0
>    1           |      0  /  16386     |      0  /  16467
>
> Unpatched ignores the swappiness arg (always file); patched honors it.
> Matches the commit message.
>
> Tested-by: Song Hu <husong@xxxxxxxxxx>
> Reviewed-by: Song Hu <husong@xxxxxxxxxx>
Thanks.

--
Best regards
Ridong