Re: [PATCH 02/10] mm: zone_reclaim: compaction: scan all memory with /proc/sys/vm/compact_memory

[Wanpeng Li <liwanp@linux.vnet.ibm.com>]

On Tue, Jul 16, 2013 at 03:41:46PM +0200, Andrea Arcangeli wrote:
>Reset the stats so /proc/sys/vm/compact_memory will scan all memory.
>
>Signed-off-by: Andrea Arcangeli <aarcange@redhat.com>
>Reviewed-by: Rik van Riel <riel@redhat.com>
>Acked-by: Rafael Aquini <aquini@redhat.com>
>Acked-by: Mel Gorman <mgorman@suse.de>

Reviewed-by: Wanpeng Li <liwanp@linux.vnet.ibm.com>

>---
> mm/compaction.c | 4 +++-
> 1 file changed, 3 insertions(+), 1 deletion(-)
>
>diff --git a/mm/compaction.c b/mm/compaction.c
>index 05ccb4c..cac9594 100644
>--- a/mm/compaction.c
>+++ b/mm/compaction.c
>@@ -1136,12 +1136,14 @@ void compact_pgdat(pg_data_t *pgdat, int order)
>
> static void compact_node(int nid)
> {
>+	pg_data_t *pgdat = NODE_DATA(nid);
> 	struct compact_control cc = {
> 		.order = -1,
> 		.sync = true,
> 	};
>
>-	__compact_pgdat(NODE_DATA(nid), &cc);
>+	reset_isolation_suitable(pgdat);
>+	__compact_pgdat(pgdat, &cc);
> }
>
> /* Compact all nodes in the system */
>
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