Re: [RFC][PATCH] vmscan: don't export nr_saved_scan in /proc/zoneinfo

[Rik van Riel]

Wu Fengguang wrote:
> The lru->nr_saved_scan's are not meaningful counters for even kernel
> developers.  They typically are smaller than 32 and are always 0 for
> large lists. So remove them from /proc/zoneinfo.
>
> Hopefully this interface change won't break too many scripts.
> /proc/zoneinfo is too unstructured to be script friendly, and I wonder
> the affected scripts - if there are any - are still bleeding since the
> not long ago commit "vmscan: split LRU lists into anon & file sets",
> which also touched the "scanned" line :)
>
> If we are to re-export accumulated vmscan counts in the future, they
> can go to new lines in /proc/zoneinfo instead of the current form, or
> to /sys/devices/system/node/node0/meminfo?
>
> CC: Christoph Lameter <cl@xxxxxxxxxxxxxxxxxxxx>
> Signed-off-by: Wu Fengguang <fengguang.wu@xxxxxxxxx>

Acked-by: Rik van Riel <riel@xxxxxxxxxx>

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