linux-kernel - Re: [PATCH v2 4/5] mm, kswapd: replace kswapd compaction with waking up kcompactd

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Message-Id: <20160304152507.18b1362f51b0860a1268a977@linux-foundation.org>
Date:	Fri, 4 Mar 2016 15:25:07 -0800
From:	Andrew Morton <akpm@...ux-foundation.org>
To:	Vlastimil Babka <vbabka@...e.cz>
Cc:	Joonsoo Kim <js1304@...il.com>,
	Joonsoo Kim <iamjoonsoo.kim@....com>,
	Linux Memory Management List <linux-mm@...ck.org>,
	LKML <linux-kernel@...r.kernel.org>,
	Andrea Arcangeli <aarcange@...hat.com>,
	"Kirill A. Shutemov" <kirill.shutemov@...ux.intel.com>,
	Rik van Riel <riel@...hat.com>,
	Mel Gorman <mgorman@...hsingularity.net>,
	David Rientjes <rientjes@...gle.com>,
	Michal Hocko <mhocko@...e.com>,
	Johannes Weiner <hannes@...xchg.org>
Subject: Re: [PATCH v2 4/5] mm, kswapd: replace kswapd compaction with
 waking up kcompactd

On Wed, 2 Mar 2016 16:22:43 +0100 Vlastimil Babka <vbabka@...e.cz> wrote:

> On 03/02/2016 03:59 PM, Joonsoo Kim wrote:
> > 2016-03-02 23:40 GMT+09:00 Vlastimil Babka <vbabka@...e.cz>:
> >> On 03/02/2016 03:22 PM, Joonsoo Kim wrote:
> >>
> >> So I understand that patch 5 would be just about this?
> >>
> >> -       if (compaction_restarting(zone, cc->order) && !current_is_kcompactd())
> >> +       if (compaction_restarting(zone, cc->order))
> >>                  __reset_isolation_suitable(zone);
> >
> > Yeah, you understand correctly. :)
> >
> >> I'm more inclined to fold it in that case.
> >
> > Patch would be just simple, but, I guess it would cause some difference
> > in test result. But, I'm okay for folding.
> 
> Thanks. Andrew, should I send now patch folding patch 4/5 and 5/5 with 
> all the accumulated fixlets (including those I sent earlier today) and 
> combined changelog, or do you want to apply the new fixlets separately 
> first and let them sit for a week or so? In any case, sorry for the churn.

Did I get everything?

http://ozlabs.org/~akpm/mmots/broken-out/mm-kswapd-remove-bogus-check-of-balance_classzone_idx.patch
http://ozlabs.org/~akpm/mmots/broken-out/mm-compaction-introduce-kcompactd.patch
http://ozlabs.org/~akpm/mmots/broken-out/mm-compaction-introduce-kcompactd-fix.patch
http://ozlabs.org/~akpm/mmots/broken-out/mm-compaction-introduce-kcompactd-fix-2.patch
http://ozlabs.org/~akpm/mmots/broken-out/mm-compaction-introduce-kcompactd-fix-3.patch
http://ozlabs.org/~akpm/mmots/broken-out/mm-memory-hotplug-small-cleanup-in-online_pages.patch
http://ozlabs.org/~akpm/mmots/broken-out/mm-kswapd-replace-kswapd-compaction-with-waking-up-kcompactd.patch
http://ozlabs.org/~akpm/mmots/broken-out/mm-kswapd-replace-kswapd-compaction-with-waking-up-kcompactd-fix.patch
http://ozlabs.org/~akpm/mmots/broken-out/mm-compaction-adapt-isolation_suitable-flushing-to-kcompactd.patch