Re: [PATCH 19/27] mm: Move vmscan writes and file write accounting to the node

[Vlastimil Babka]

On 06/09/2016 08:04 PM, Mel Gorman wrote:
> As reclaim is now node-based, it follows that page write activity
> due to page reclaim should also be accounted for on the node. For
> consistency, also account page writes and page dirtying on a per-node
> basis.
>
> After this patch, there are a few remaining zone counters that may
> appear strange but are fine. NUMA stats are still per-zone as this is a
> user-space interface that tools consume. NR_MLOCK, NR_SLAB_*, NR_PAGETABLE,
> NR_KERNEL_STACK and NR_BOUNCE are all allocations that potentially pin
> low memory and cannot trivially be reclaimed on demand. This information
> is still useful for debugging a page allocation failure warning.
>
> Signed-off-by: Mel Gorman <mgorman@xxxxxxxxxxxxxxxxxxx>

Acked-by: Vlastimil Babka <vbabka@xxxxxxx>