On March 01, 2017 5:40 AM Johannes Weiner wrote:
>
> PF_MEMALLOC direct reclaimers get throttled on a node when the sum of
> all free pages in each zone fall below half the min watermark. During
> the summation, we want to exclude zones that don't have reclaimables.
> Checking the same pgdat over and over again doesn't make sense.
>
> Fixes: 599d0c954f91 ("mm, vmscan: move LRU lists to node")
> Signed-off-by: Johannes Weiner <han...@cmpxchg.org>
> ---
Acked-by: Hillf Danton <hillf...@alibaba-inc.com>
