[PATCH 2/2] mm: page_alloc: Add unlikely for MAX_ORDER check

[SeungHun Lee <waydi1@xxxxxxxxx>]

"order >= MAX_ORDER" case is occur rarely.

So I add unlikely for this check.
---
 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 b8475ed..e644cf5 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -2408,7 +2408,7 @@ __alloc_pages_slowpath(gfp_t gfp_mask, unsigned int order,
 	 * be using allocators in order of preference for an area that is
 	 * too large.
 	 */
-	if (order >= MAX_ORDER) {
+	if (unlikely(order >= MAX_ORDER)) {
 		WARN_ON_ONCE(!(gfp_mask & __GFP_NOWARN));
 		return NULL;
 	}
-- 
1.7.0.4

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