Messages in this thread Patch in this message | | | From | Hao Lee <> | Subject | [PATCH] mm: remove a redundant condition in the for loop | Date | Mon, 19 Jun 2017 21:54:18 +0800 |
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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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