From 400bc7fd4fa7d33c96d836e6b65eeed246f1959a Mon Sep 17 00:00:00 2001 From: zhong jiang Date: Thu, 28 Jul 2016 15:45:07 -0700 Subject: [PATCH] mm: update the comment in __isolate_free_page We need to assure the comment is consistent with the code. [akpm@linux-foundation.org: coding-style fixes] Link: http://lkml.kernel.org/r/1466171914-21027-1-git-send-email-zhongjiang@huawei.com Signed-off-by: zhong jiang Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- mm/page_alloc.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/mm/page_alloc.c b/mm/page_alloc.c index 452513bf02ce..b6d38b1c1cdb 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -2517,7 +2517,10 @@ int __isolate_free_page(struct page *page, unsigned int order) zone->free_area[order].nr_free--; rmv_page_order(page); - /* 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) { -- 2.11.0