From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail144.messagelabs.com (mail144.messagelabs.com [216.82.254.51]) by kanga.kvack.org (Postfix) with ESMTP id 1AB236B0069 for ; Thu, 17 Nov 2011 03:22:49 -0500 (EST) Date: Thu, 17 Nov 2011 09:22:42 +0100 From: Michal Hocko Subject: Re: [PATCH] mm: cleanup the comment for head/tail pages of compound pages in mm/page_alloc.c Message-ID: <20111117082148.GA30544@tiehlicka.suse.cz> References: <4EC21D78.4080508@gmail.com> <20111115132409.GA7551@tiehlicka.suse.cz> <4EC2FE33.7030905@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <4EC2FE33.7030905@gmail.com> Sender: owner-linux-mm@kvack.org List-ID: To: Wang Sheng-Hui Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org, trivial@kernel.org [CCing trivial tree] Unquoted patch at https://lkml.org/lkml/2011/11/15/402 On Wed 16-11-11 08:05:07, Wang Sheng-Hui wrote: [...] > Thanks, Michal. > > New patch generated. > > > [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 > --- > mm/page_alloc.c | 4 ++-- > 1 files changed, 2 insertions(+), 2 deletions(-) > > diff --git a/mm/page_alloc.c b/mm/page_alloc.c > index 6e8ecb6..e7dd848 100644 > --- a/mm/page_alloc.c > +++ b/mm/page_alloc.c > @@ -332,8 +332,8 @@ 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. > -- > 1.7.1 -- Michal Hocko SUSE Labs SUSE LINUX s.r.o. Lihovarska 1060/12 190 00 Praha 9 Czech Republic -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Fight unfair telecom internet charges in Canada: sign http://stopthemeter.ca/ Don't email: email@kvack.org