From 6416b9fa43537c01098f8faa5bcbebb4a275297d Mon Sep 17 00:00:00 2001 From: Wang Sheng-Hui Date: Thu, 17 Nov 2011 10:53:50 +0100 Subject: [PATCH] mm: cleanup the comment for head/tail pages of compound pages in mm/page_alloc.c Only tail pages point at the head page using their ->first_page fields. Signed-off-by: Wang Sheng-Hui Reviewed-by: Michal Hocko Signed-off-by: Jiri Kosina --- mm/page_alloc.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/mm/page_alloc.c b/mm/page_alloc.c index 9dd443d89d8b..e51802d7c8ff 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -333,8 +333,8 @@ out: * * The remaining PAGE_SIZE pages are called "tail pages". * - * All pages have PG_compound set. All pages have their ->private pointing at - * the head page (even the head page has this). + * All pages have PG_compound set. All tail pages have their ->first_page + * pointing at the head page. * * The first tail page's ->lru.next holds the address of the compound page's * put_page() function. Its ->lru.prev holds the order of allocation. -- 2.34.1