linux-kernel - [PATCH] mm: update the comment in __isolate_free

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Message-ID: <1466171914-21027-1-git-send-email-zhongjiang@huawei.com>
Date:	Fri, 17 Jun 2016 21:58:34 +0800
From:	zhongjiang <zhongjiang@...wei.com>
To:	<iamjoonsoo.kim@....com>, <akpm@...ux-foundation.org>
CC:	<linux-mm@...ck.org>, <linux-kernel@...r.kernel.org>
Subject: [PATCH] mm: update the comment in __isolate_free_page

From: zhong jiang <zhongjiang@...wei.com>

we need to assure the code is consistent with comment. otherwise,
Freshman feel hard to learn it.

Signed-off-by: zhong jiang <zhongjiang@...wei.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 6903b69..3842400 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -2509,7 +2509,7 @@ int __isolate_free_page(struct page *page, unsigned int order)
 
 	set_page_owner(page, order, __GFP_MOVABLE);
 
-	/* Set the pageblock if the isolated page is at least a pageblock */
+	/* Set the pageblock if the isolated page is at least half of a pageblock */
 	if (order >= pageblock_order - 1) {
 		struct page *endpage = page + (1 << order) - 1;
 		for (; page < endpage; page += pageblock_nr_pages) {
-- 
1.8.3.1