From: Wei Yang <richard.weiyang@linux.alibaba.com>
To: akpm@linux-foundation.org
Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org,
Wei Yang <richard.weiyang@linux.alibaba.com>
Subject: [PATCH] mm/page_alloc: fallbacks at most has 3 elements
Date: Fri, 26 Jun 2020 07:10:22 +0800 [thread overview]
Message-ID: <20200625231022.18784-1-richard.weiyang@linux.alibaba.com> (raw)
MIGRAGE_TYPES is used to be the mark of end and there are at most 3
elements for the one dimension array.
Reduce to 3 to save little memory.
Signed-off-by: Wei Yang <richard.weiyang@linux.alibaba.com>
---
mm/page_alloc.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index dabec744ceff..8b0df4aeb8c6 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -2266,7 +2266,7 @@ struct page *__rmqueue_smallest(struct zone *zone, unsigned int order,
* This array describes the order lists are fallen back to when
* the free lists for the desirable migrate type are depleted
*/
-static int fallbacks[MIGRATE_TYPES][4] = {
+static int fallbacks[MIGRATE_TYPES][3] = {
[MIGRATE_UNMOVABLE] = { MIGRATE_RECLAIMABLE, MIGRATE_MOVABLE, MIGRATE_TYPES },
[MIGRATE_MOVABLE] = { MIGRATE_RECLAIMABLE, MIGRATE_UNMOVABLE, MIGRATE_TYPES },
[MIGRATE_RECLAIMABLE] = { MIGRATE_UNMOVABLE, MIGRATE_MOVABLE, MIGRATE_TYPES },
--
2.20.1 (Apple Git-117)
next reply other threads:[~2020-06-25 23:10 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-06-25 23:10 Wei Yang [this message]
2020-06-30 13:31 ` David Hildenbrand
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