Messages in this thread Patch in this message | | | From | Vlastimil Babka <> | Subject | [PATCH 3/4] mm, cma: drain single zone pcplists | Date | Thu, 2 Oct 2014 17:48:59 +0200 |
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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@suse.cz> Cc: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com> Cc: Mel Gorman <mgorman@suse.de> Cc: Rik van Riel <riel@redhat.com> Cc: Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com> Cc: Zhang Yanfei <zhangyanfei@cn.fujitsu.com> Cc: Xishi Qiu <qiuxishi@huawei.com> Cc: Vladimir Davydov <vdavydov@parallels.com> Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com> --- mm/page_alloc.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/mm/page_alloc.c b/mm/page_alloc.c index bc3db3e..e758159 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -6417,7 +6417,7 @@ int alloc_contig_range(unsigned long start, unsigned long end, */ lru_add_drain_all(); - drain_all_pages(NULL); + drain_all_pages(cc.zone); order = 0; outer_start = start; -- 1.8.4.5
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