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SubjectRe: [PATCH 3/3] Zone reclaim V3: Frequency of failed reclaim attempts
> +	if (zone->last_unsuccessful_zone_reclaim == get_jiffies_64())
> + return 0;


and

>
> + unsigned long last_unsuccessful_zone_reclaim;

For long you don't need get_jiffies_64. On 32bit it would be 32bit
anyways and on 64bit even normal jiffies is 64bit. So normal
jiffies would be suffice.

But I suspect it would be better to just merge the proper patch
with the full accounting instead of this kludge.

-Andi
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