[PATCH 07/49] mm/mm_init: use pageblock_migratetype_init_range() in deferred_free_pages()

[Muchun Song]

Simplify deferred_free_pages by replacing the duplicate loops for
initializing pageblock migratetype with a call to
pageblock_migratetype_init_range to simplify the code.

Signed-off-by: Muchun Song <songmuchun at bytedance.com>
---
 mm/mm_init.c | 13 ++++---------
 1 file changed, 4 insertions(+), 9 deletions(-)

diff --git a/mm/mm_init.c b/mm/mm_init.c
index 4936ca78966c..a92c5053f63d 100644
--- a/mm/mm_init.c
+++ b/mm/mm_init.c
@@ -1974,13 +1974,12 @@ static void __init deferred_free_pages(unsigned long pfn,
 	if (!nr_pages)
 		return;
 
+	pageblock_migratetype_init_range(pfn, nr_pages, MIGRATE_MOVABLE);
+
 	page = pfn_to_page(pfn);
 
 	/* Free a large naturally-aligned chunk if possible */
 	if (nr_pages == MAX_ORDER_NR_PAGES && IS_MAX_ORDER_ALIGNED(pfn)) {
-		for (i = 0; i < nr_pages; i += pageblock_nr_pages)
-			init_pageblock_migratetype(page + i, MIGRATE_MOVABLE,
-					false);
 		__free_pages_core(page, MAX_PAGE_ORDER, MEMINIT_EARLY);
 		return;
 	}
@@ -1988,12 +1987,8 @@ static void __init deferred_free_pages(unsigned long pfn,
 	/* Accept chunks smaller than MAX_PAGE_ORDER upfront */
 	accept_memory(PFN_PHYS(pfn), nr_pages * PAGE_SIZE);
 
-	for (i = 0; i < nr_pages; i++, page++, pfn++) {
-		if (pageblock_aligned(pfn))
-			init_pageblock_migratetype(page, MIGRATE_MOVABLE,
-					false);
-		__free_pages_core(page, 0, MEMINIT_EARLY);
-	}
+	for (i = 0; i < nr_pages; i++)
+		__free_pages_core(page + i, 0, MEMINIT_EARLY);
 }
 
 /* Completion tracking for deferred_init_memmap() threads */
-- 
2.20.1