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Commit bbf9ce97 authored by Xishi Qiu's avatar Xishi Qiu Committed by Linus Torvalds
Browse files

mm: use is_migrate_isolate_page() to simplify the code 

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

Link: http://lkml.kernel.org/r/58B94FB1.8020802@huawei.com


Signed-off-by: default avatarXishi Qiu <qiuxishi@huawei.com>
Acked-by: default avatarMichal Hocko <mhocko@suse.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Mel Gorman <mgorman@techsingularity.net>
Cc: Minchan Kim <minchan@kernel.org>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent a6ffdc07

mm/page_isolation.c

+3 −3
Original line number Diff line number Diff line
@@ -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);