Re: [PATCH] mm, memory_hotplug: do not back off draining pcp free pages from kworker context

From: Tejun Heo
Date: Tue Sep 19 2017 - 14:57:53 EST


On Tue, Sep 19, 2017 at 11:45:21AM +0200, Michal Hocko wrote:
> > So, this shouldn't be an issue. This may get affected by direct
> > reclaim frenzy but it's only a small piece of the whole symptom and we
> > gotta fix that at the source.
> OK, so there shouldn't be any issue with the patch, right?

idk, it'll make the code path more susceptible to direct reclaim
starvations, so it's difficult to claim that there won't be *any*
problems; however, given the extent of the starvation problem, this
likely won't add any noticeable issues.