Messages in this thread | | | Date | Mon, 26 Nov 2012 10:32:12 -0500 | From | Rik van Riel <> | Subject | Re: [PATCH] mm,vmscan: only loop back if compaction would fail in all zones |
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On 11/25/2012 11:10 PM, Johannes Weiner wrote:
> From: Johannes Weiner <hannes@cmpxchg.org> > Subject: [patch] mm: vmscan: fix endless loop in kswapd balancing > > Kswapd does not in all places have the same criteria for when it > considers a zone balanced. This leads to zones being not reclaimed > because they are considered just fine and the compaction checks to > loop over the zonelist again because they are considered unbalanced, > causing kswapd to run forever. > > Add a function, zone_balanced(), that checks the watermark and if > compaction has enough free memory to do its job. Then use it > uniformly for when kswapd needs to check if a zone is balanced. > > Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>
Reviewed-by: Rik van Riel <riel@redhat.com>
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