Subject: + mm-compaction-cleanup-isolate_freepages-fix-2.patch added to -mm tree
To: vbabka@xxxxxxx,b.zolnierkie@xxxxxxxxxxx,cl@xxxxxxxxx,d.j.shin@xxxxxxxxxxx,iamjoonsoo.kim@xxxxxxx,mgorman@xxxxxxx,mina86@xxxxxxxxxx,minchan@xxxxxxxxxx,n-horiguchi@xxxxxxxxxxxxx,riel@xxxxxxxxxx,sunghwan.yun@xxxxxxxxxxx
From: akpm@xxxxxxxxxxxxxxxxxxxx
Date: Tue, 22 Apr 2014 12:59:16 -0700
The patch titled
Subject: mm-compaction-cleanup-isolate_freepages-fix 2
has been added to the -mm tree. Its filename is
mm-compaction-cleanup-isolate_freepages-fix-2.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/mm-compaction-cleanup-isolate_freepages-fix-2.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/mm-compaction-cleanup-isolate_freepages-fix-2.patch
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------------------------------------------------------
From: Vlastimil Babka <vbabka@xxxxxxx>
Subject: mm-compaction-cleanup-isolate_freepages-fix 2
Cleanup detection of compaction scanners crossing in isolate_freepages().
To make sure compact_finished() observes scanners crossing, we can just
set free_pfn to migrate_pfn instead of confusing max() construct.
Suggested-by: Minchan Kim <minchan@xxxxxxxxxx>
Signed-off-by: Vlastimil Babka <vbabka@xxxxxxx>
Cc: Bartlomiej Zolnierkiewicz <b.zolnierkie@xxxxxxxxxxx>
Cc: Christoph Lameter <cl@xxxxxxxxx>
Cc: Dongjun Shin <d.j.shin@xxxxxxxxxxx>
Cc: Joonsoo Kim <iamjoonsoo.kim@xxxxxxx>
Cc: Mel Gorman <mgorman@xxxxxxx>
Cc: Michal Nazarewicz <mina86@xxxxxxxxxx>
Cc: Minchan Kim <minchan@xxxxxxxxxx>
Cc: Naoya Horiguchi <n-horiguchi@xxxxxxxxxxxxx>
Cc: Rik van Riel <riel@xxxxxxxxxx>
Cc: Sunghwan Yun <sunghwan.yun@xxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/compaction.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff -puN mm/compaction.c~mm-compaction-cleanup-isolate_freepages-fix-2 mm/compaction.c
--- a/mm/compaction.c~mm-compaction-cleanup-isolate_freepages-fix-2
+++ a/mm/compaction.c
@@ -758,7 +758,7 @@ static void isolate_freepages(struct zon
* so that compact_finished() may detect this
*/
if (pfn < low_pfn)
- next_free_pfn = max(pfn, zone->zone_start_pfn);
+ next_free_pfn = cc->migrate_pfn;
cc->free_pfn = next_free_pfn;
cc->nr_freepages = nr_freepages;
_
Patches currently in -mm which might be from vbabka@xxxxxxx are
mm-compaction-make-isolate_freepages-start-at-pageblock-boundary.patch
mm-compactionc-isolate_freepages_block-small-tuneup.patch
mm-page_alloc-prevent-migrate_reserve-pages-from-being-misplaced.patch
mm-page_alloc-debug_vm-checks-for-free_list-placement-of-cma-and-reserve-pages.patch
mm-compaction-clean-up-unused-code-lines.patch
mm-compaction-cleanup-isolate_freepages.patch
mm-compaction-cleanup-isolate_freepages-fix.patch
mm-compaction-cleanup-isolate_freepages-fix-2.patch
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