Re: [PATCH] mm/vmstat: Fix placement of per-node stats in /proc/zoneinfo

[Andrew Morton]

On Thu, 25 Jul 2024 16:26:26 +0530 Shivank Garg <shivankg@xxxxxxx> wrote:

> The per-node stats in /proc/zoneinfo output are incorrectly inserted
> between the first populated zone title and its specific stats. This
> creates confusion while reading or parsing its output.

I pity anyone who has to write a parser for that mess.

> This patch relocates the per-node stats at the beginning for each node,
> followed by the individual zone statistics. This fix results in a clearer
> and more consistent output format.

> Fixes: e2ecc8a79ed4 ("mm, vmstat: print node-based stats in zoneinfo file")

It's been this way since 2016?  Surely there's a risk of breaking
existing userspace parsers?