Messages in this thread | | | From | KOSAKI Motohiro <> | Date | Wed, 11 Apr 2012 14:51:19 -0400 | Subject | Re: [PATCH 2/3] mm: vmscan: Do not stall on writeback during memory compaction |
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On Wed, Apr 11, 2012 at 1:26 PM, Rik van Riel <riel@redhat.com> wrote: > On 04/11/2012 12:38 PM, Mel Gorman wrote: >> >> This patch stops reclaim/compaction entering sync reclaim as this was only >> intended for lumpy reclaim and an oversight. Page migration has its own >> logic for stalling on writeback pages if necessary and memory compaction >> is already using it. >> >> Waiting on page writeback is bad for a number of reasons but the primary >> one is that waiting on writeback to a slow device like USB can take a >> considerable length of time. Page reclaim instead uses >> wait_iff_congested() >> to throttle if too many dirty pages are being scanned. >> >> Signed-off-by: Mel Gorman<mgorman@suse.de> > > > Acked-by: Rik van Riel <riel@redhat.com>
Acked-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
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