+ mm-compaction-__compact_pgdat-code-cleanuup.patch added to -mm tree

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The patch titled
     Subject: mm/compaction.c: __compact_pgdat() code cleanuup
has been added to the -mm tree.  Its filename is
     mm-compaction-__compact_pgdat-code-cleanuup.patch

This patch should soon appear at
    http://ozlabs.org/~akpm/mmots/broken-out/mm-compaction-__compact_pgdat-code-cleanuup.patch
and later at
    http://ozlabs.org/~akpm/mmotm/broken-out/mm-compaction-__compact_pgdat-code-cleanuup.patch

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------------------------------------------------------
From: Joonsoo Kim <js1304@xxxxxxxxx>
Subject: mm/compaction.c: __compact_pgdat() code cleanuup

This patch uses is_via_compact_memory() to distinguish compaction from
sysfs or sysctl.  And, this patch also reduces indentation on
compaction_defer_reset() by filtering these cases first before checking
watermark.

There is no functional change.

Signed-off-by: Joonsoo Kim <iamjoonsoo.kim@xxxxxxx>
Acked-by: Yaowei Bai <baiyaowei@xxxxxxxxxxxxxxxxxxxx>
Acked-by: David Rientjes <rientjes@xxxxxxxxxx>
Acked-by: Vlastimil Babka <vbabka@xxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---

 mm/compaction.c |   13 +++++++------
 1 file changed, 7 insertions(+), 6 deletions(-)

diff -puN mm/compaction.c~mm-compaction-__compact_pgdat-code-cleanuup mm/compaction.c
--- a/mm/compaction.c~mm-compaction-__compact_pgdat-code-cleanuup
+++ a/mm/compaction.c
@@ -1658,14 +1658,15 @@ static void __compact_pgdat(pg_data_t *p
 				!compaction_deferred(zone, cc->order))
 			compact_zone(zone, cc);
 
-		if (cc->order > 0) {
-			if (zone_watermark_ok(zone, cc->order,
-						low_wmark_pages(zone), 0, 0))
-				compaction_defer_reset(zone, cc->order, false);
-		}
-
 		VM_BUG_ON(!list_empty(&cc->freepages));
 		VM_BUG_ON(!list_empty(&cc->migratepages));
+
+		if (is_via_compact_memory(cc->order))
+			continue;
+
+		if (zone_watermark_ok(zone, cc->order,
+				low_wmark_pages(zone), 0, 0))
+			compaction_defer_reset(zone, cc->order, false);
 	}
 }
 
_

Patches currently in -mm which might be from js1304@xxxxxxxxx are

mm-page_isolation-return-last-tested-pfn-rather-than-failure-indicator.patch
mm-page_isolation-add-new-tracepoint-test_pages_isolated.patch
mm-cma-always-check-which-page-cause-allocation-failure.patch
mm-cma-always-check-which-page-cause-allocation-failure-v2.patch
mm-compaction-__compact_pgdat-code-cleanuup.patch

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