[PATCH 2/2] mm: use is_migrate_isolate_page() to simplify the code

[Xishi Qiu]

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

Signed-off-by: Xishi Qiu <qiuxi...@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