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

From	Tejun Heo <tj@kernel.org>
Newsgroups	linux.kernel
Subject	Re: [PATCH] mm, memory_hotplug: do not back off draining pcp free pages from kworker context
Date	2017-09-19 21:00 +0200
Message-ID	<urvUu-AH-11@gated-at.bofh.it> (permalink)
References	(2 earlier) <ujMSu-1Zf-21@gated-at.bofh.it> <ujMSu-1Zf-23@gated-at.bofh.it> <ukqmR-1y0-5@gated-at.bofh.it> <urhyb-7dq-9@gated-at.bofh.it> <urnkd-39c-3@gated-at.bofh.it>
Organization	linux.* mail to news gateway

Show all headers | View raw

Hello,

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.

Thanks.

-- 
tejun

Back to linux.kernel | Previous | Next — Previous in thread | Find similar | Unroll thread

Thread

Re: [PATCH] mm, memory_hotplug: do not back off draining pcp free  pages from kworker context Tejun Heo <tj@kernel.org> - 2017-09-19 05:40 +0200
  Re: [PATCH] mm, memory_hotplug: do not back off draining pcp free  pages from kworker context Michal Hocko <mhocko@kernel.org> - 2017-09-19 11:50 +0200
    Re: [PATCH] mm, memory_hotplug: do not back off draining pcp free  pages from kworker context Tejun Heo <tj@kernel.org> - 2017-09-19 21:00 +0200

csiph-web