Messages in this thread Patch in this message | | | Date | Sat, 15 Jun 2013 19:05:39 +0800 | From | Zhang Yanfei <> | Subject | [PATCH] mm: Add unlikely for current_order test |
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From: Zhang Yanfei <zhangyanfei@cn.fujitsu.com>
Since we have an unlikely for the "current_order >= pageblock_order / 2" test above, adding an unlikely for this "current_order >= pageblock_order" test seems more appropriate.
Signed-off-by: Zhang Yanfei <zhangyanfei@cn.fujitsu.com> --- mm/page_alloc.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/mm/page_alloc.c b/mm/page_alloc.c index c3edb62..1b6d7de 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -1071,7 +1071,7 @@ __rmqueue_fallback(struct zone *zone, int order, int start_migratetype) rmv_page_order(page); /* Take ownership for orders >= pageblock_order */ - if (current_order >= pageblock_order && + if (unlikely(current_order >= pageblock_order) && !is_migrate_cma(migratetype)) change_pageblock_range(page, current_order, start_migratetype); -- 1.7.1
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