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Message-ID: <58B94FB1.8020802@huawei.com>
Date: Fri, 3 Mar 2017 19:12:49 +0800
From: Xishi Qiu <qiuxishi@huawei.com>
MIME-Version: 1.0
Subject: [PATCH 2/2] mm: use is_migrate_isolate_page() to simplify the code
References: <58B94F15.6060606@huawei.com>
In-Reply-To: <58B94F15.6060606@huawei.com>
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Sender: owner-linux-mm@kvack.org
List-ID: <linux-mm.kvack.org>
To: Andrew Morton <akpm@linux-foundation.org>, Vlastimil Babka <vbabka@suse.cz>, Mel Gorman <mgorman@techsingularity.net>, Minchan Kim <minchan@kernel.org>, Michal Hocko <mhocko@kernel.org>, Joonsoo Kim <iamjoonsoo.kim@lge.com>
Cc: Yisheng Xie <xieyisheng1@huawei.com>, Linux MM <linux-mm@kvack.org>, LKML <linux-kernel@vger.kernel.org>

Use is_migrate_isolate_page() to simplify the code, no functional changes.

Signed-off-by: Xishi Qiu <qiuxishi@huawei.com>
---
 mm/page_isolation.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/mm/page_isolation.c b/mm/page_isolation.c
index f4e17a5..7927bbb 100644
--- a/mm/page_isolation.c
+++ b/mm/page_isolation.c
@@ -88,7 +88,7 @@ static void unset_migratetype_isolate(struct page *page, unsigned migratetype)
 
 	zone = page_zone(page);
 	spin_lock_irqsave(&zone->lock, flags);
-	if (get_pageblock_migratetype(page) != MIGRATE_ISOLATE)
+	if (!is_migrate_isolate_page(page))
 		goto out;
 
 	/*
@@ -205,7 +205,7 @@ int undo_isolate_page_range(unsigned long start_pfn, unsigned long end_pfn,
 	     pfn < end_pfn;
 	     pfn += pageblock_nr_pages) {
 		page = __first_valid_page(pfn, pageblock_nr_pages);
-		if (!page || get_pageblock_migratetype(page) != MIGRATE_ISOLATE)
+		if (!page || !is_migrate_isolate_page(page))
 			continue;
 		unset_migratetype_isolate(page, migratetype);
 	}
@@ -262,7 +262,7 @@ int test_pages_isolated(unsigned long start_pfn, unsigned long end_pfn,
 	 */
 	for (pfn = start_pfn; pfn < end_pfn; pfn += pageblock_nr_pages) {
 		page = __first_valid_page(pfn, pageblock_nr_pages);
-		if (page && get_pageblock_migratetype(page) != MIGRATE_ISOLATE)
+		if (page && !is_migrate_isolate_page(page))
 			break;
 	}
 	page = __first_valid_page(start_pfn, end_pfn - start_pfn);
-- 
1.8.3.1


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