The patch titled
Subject: mm, cma: drain single zone pcplists
has been added to the -mm tree. Its filename is
mm-cma-drain-single-zone-pcplists.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/mm-cma-drain-single-zone-pcplists.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/mm-cma-drain-single-zone-pcplists.patch
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From: Vlastimil Babka <vbabka@xxxxxxx>
Subject: mm, cma: drain single zone pcplists
CMA allocation drains pcplists so that pages can merge back to buddy
allocator. Since it operates on a single zone, we can reduce the pcplists
drain to the single zone, which is now possible.
The change should make CMA allocations faster and not disturbing unrelated
pcplists anymore.
Signed-off-by: Vlastimil Babka <vbabka@xxxxxxx>
Cc: Naoya Horiguchi <n-horiguchi@xxxxxxxxxxxxx>
Cc: Mel Gorman <mgorman@xxxxxxx>
Cc: Rik van Riel <riel@xxxxxxxxxx>
Cc: Yasuaki Ishimatsu <isimatu.yasuaki@xxxxxxxxxxxxxx>
Cc: Zhang Yanfei <zhangyanfei@xxxxxxxxxxxxxx>
Cc: Xishi Qiu <qiuxishi@xxxxxxxxxx>
Cc: Vladimir Davydov <vdavydov@xxxxxxxxxxxxx>
Cc: Joonsoo Kim <iamjoonsoo.kim@xxxxxxx>
Cc: Michal Nazarewicz <mina86@xxxxxxxxxx>
Cc: Marek Szyprowski <m.szyprowski@xxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/page_alloc.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff -puN mm/page_alloc.c~mm-cma-drain-single-zone-pcplists mm/page_alloc.c
--- a/mm/page_alloc.c~mm-cma-drain-single-zone-pcplists
+++ a/mm/page_alloc.c
@@ -6417,7 +6417,7 @@ int alloc_contig_range(unsigned long sta
*/
lru_add_drain_all();
- drain_all_pages(NULL);
+ drain_all_pages(cc.zone);
order = 0;
outer_start = start;
_
Patches currently in -mm which might be from vbabka@xxxxxxx are
origin.patch
mm-compaction-avoid-premature-range-skip-in-isolate_migratepages_range.patch
mm-introduce-single-zone-pcplists-drain.patch
mm-page_isolation-drain-single-zone-pcplists.patch
mm-cma-drain-single-zone-pcplists.patch
mm-memory_hotplug-failure-drain-single-zone-pcplists.patch
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