linux-kernel - [PATCH] mm/page_alloc: remove unneeded current

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Date:   Tue, 8 Aug 2023 10:05:55 +0800
From:   Miaohe Lin <linmiaohe@...wei.com>
To:     <akpm@...ux-foundation.org>
CC:     <linux-mm@...ck.org>, <linux-kernel@...r.kernel.org>,
        <linmiaohe@...wei.com>
Subject: [PATCH] mm/page_alloc: remove unneeded current_order check

current_order is guaranteed to '>=' min_order while min_order always '>='
order. So current_order must be '>=' order.

Signed-off-by: Miaohe Lin <linmiaohe@...wei.com>
---
 mm/page_alloc.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index 96b7c1a7d1f2..d37ec87515d0 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -2072,8 +2072,7 @@ __rmqueue_fallback(struct zone *zone, int order, int start_migratetype,
 		 * allocation falls back into a different pageblock than this
 		 * one, it won't cause permanent fragmentation.
 		 */
-		if (!can_steal && start_migratetype == MIGRATE_MOVABLE
-					&& current_order > order)
+		if (!can_steal && start_migratetype == MIGRATE_MOVABLE)
 			goto find_smallest;
 
 		goto do_steal;
-- 
2.33.0