Re: [PATCH 2/3][v2] vmstat: add anon_scan_ratio field to zoneinfo

[KOSAKI Motohiro]

> > Well. zone->lock and zone->lru_lock should be not taked at the same time.
> 
> I looked over the code since I am out of office.
> I can't find any locking problem zone->lock and zone->lru_lock.
> Do you know any locking order problem?
> Could you explain it with call graph if you don't mind?
> 
> I am out of office by tomorrow so I can't reply quickly.
> Sorry for late reponse.

This is not lock order issue. both zone->lock and zone->lru_lock are
hotpath lock. then, same tame grabbing might cause performance impact.

thanks.



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