Subject: Re: [PATCH v2] mm/balloon: expose per-node balloon pages in node meminfo

From: SeongJae Park <[email-masked]>
Date: Fri, 8 May 2026 18:07:28 -0700

On Fri,  8 May 2026 17:47:36 +0800 Hao Ge <[email-masked]> wrote:

> Commit 835de37603ef ("meminfo: add a per node counter for balloon
> drivers") added NR_BALLOON_PAGES and exposed it in /proc/meminfo.
> However, the per-node view at /sys/devices/system/node/nodeX/meminfo
> was not updated, even though the counter is already tracked per-node.
> 
> Add it to node_read_meminfo() so users can see balloon usage per
> NUMA node without having to parse the raw vmstat file.

Makes sense to me.

> 
> Signed-off-by: Hao Ge <[email-masked]>

Acked-by: SeongJae Park <[email-masked]>

> ---
> v2: Move Balloon field after Unaccepted to match /proc/meminfo ordering
>     (suggested by David Hildenbrand)

Adding a link to previous revision [1] would be nice.

[1] https://docs.kernel.org/process/submitting-patches.html#commentary

Thanks,
SJ

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