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Subject[PATCH] mm: remove a redundant condition in the for loop
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The variable current_order decreases from MAX_ORDER-1 to order, so the
condition current_order <= MAX_ORDER-1 is always true.

Signed-off-by: Hao Lee <haolee.swjtu@gmail.com>
---
mm/page_alloc.c | 5 ++---
1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index 2302f25..9120c2b 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -2215,9 +2215,8 @@ __rmqueue_fallback(struct zone *zone, unsigned int order, int start_migratetype)
bool can_steal;

/* Find the largest possible block of pages in the other list */
- for (current_order = MAX_ORDER-1;
- current_order >= order && current_order <= MAX_ORDER-1;
- --current_order) {
+ for (current_order = MAX_ORDER-1; current_order >= order;
+ --current_order) {
area = &(zone->free_area[current_order]);
fallback_mt = find_suitable_fallback(area, current_order,
start_migratetype, false, &can_steal);
--
2.9.3
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