Re: [PATCH] vmstat: call fold_vm_zone_numa_events() before show per zone NUMA event

[Andrew Morton]

On Wed, 30 Oct 2024 16:37:37 +0800 mengensun88@xxxxxxxxx wrote:

> From: MengEn Sun <mengensun@xxxxxxxxxxx>
> 
> NUMA events will only be folded from per-CPU statistics to per
> zone and global statistics when the user actually needs it.
> 
> So, we perform this folding when reading the /proc/zoneinfo

When proposing a fix, please always fully describe the
userspace-visible effects of that fix.

> Fixes: f19298b9516c ("mm/vmstat: convert NUMA statistics to basic NUMA counters")

Since v5.14.

The information which I requested will help others decide whether
earlier kernel versions should apply this fix.