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authorVlastimil Babka <vbabka@suse.cz>2014-12-10 15:43:04 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2014-12-10 17:41:05 -0800
commitec25af84b23b6862341b5b5b68d24be3f53b8d2c (patch)
tree9a65520b903949e04b901f80f1cbe04dd6728d82 /mm/page_isolation.c
parent93481ff0e5a0c7636359a7ee52248856da5e7859 (diff)
downloadop-kernel-dev-ec25af84b23b6862341b5b5b68d24be3f53b8d2c.zip
op-kernel-dev-ec25af84b23b6862341b5b5b68d24be3f53b8d2c.tar.gz
mm, page_isolation: drain single zone pcplists
When setting MIGRATETYPE_ISOLATE on a pageblock, pcplists are drained to have a better chance that all pages will be successfully isolated and not left in the per-cpu caches. Since isolation is always concerned with a single zone, we can reduce the pcplists drain to the single zone, which is now possible. The change should make memory isolation 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> Cc: Michal Nazarewicz <mina86@mina86.com> Cc: Marek Szyprowski <m.szyprowski@samsung.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/page_isolation.c')
-rw-r--r--mm/page_isolation.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/mm/page_isolation.c b/mm/page_isolation.c
index f2452e5..72f5ac3 100644
--- a/mm/page_isolation.c
+++ b/mm/page_isolation.c
@@ -68,7 +68,7 @@ out:
spin_unlock_irqrestore(&zone->lock, flags);
if (!ret)
- drain_all_pages(NULL);
+ drain_all_pages(zone);
return ret;
}
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