From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail6.bemta8.messagelabs.com (mail6.bemta8.messagelabs.com [216.82.243.55]) by kanga.kvack.org (Postfix) with ESMTP id ACFC06B0012 for ; Wed, 25 May 2011 03:11:38 -0400 (EDT) Received: from m2.gw.fujitsu.co.jp (unknown [10.0.50.72]) by fgwmail5.fujitsu.co.jp (Postfix) with ESMTP id CF4BC3EE081 for ; Wed, 25 May 2011 16:11:35 +0900 (JST) Received: from smail (m2 [127.0.0.1]) by outgoing.m2.gw.fujitsu.co.jp (Postfix) with ESMTP id B672945DF55 for ; Wed, 25 May 2011 16:11:35 +0900 (JST) Received: from s2.gw.fujitsu.co.jp (s2.gw.fujitsu.co.jp [10.0.50.92]) by m2.gw.fujitsu.co.jp (Postfix) with ESMTP id 9433945DF58 for ; Wed, 25 May 2011 16:11:35 +0900 (JST) Received: from s2.gw.fujitsu.co.jp (localhost.localdomain [127.0.0.1]) by s2.gw.fujitsu.co.jp (Postfix) with ESMTP id 85D92E08001 for ; Wed, 25 May 2011 16:11:35 +0900 (JST) Received: from m105.s.css.fujitsu.com (m105.s.css.fujitsu.com [10.240.81.145]) by s2.gw.fujitsu.co.jp (Postfix) with ESMTP id 4FAD31DB803A for ; Wed, 25 May 2011 16:11:35 +0900 (JST) Message-ID: <4DDCABA0.4000207@jp.fujitsu.com> Date: Wed, 25 May 2011 16:11:28 +0900 From: KOSAKI Motohiro MIME-Version: 1.0 Subject: [PATCH 4/4] pagewalk: fix code comment for THP References: <4DDCAAC0.20102@jp.fujitsu.com> In-Reply-To: <4DDCAAC0.20102@jp.fujitsu.com> Content-Type: text/plain; charset=ISO-2022-JP Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org List-ID: To: kosaki.motohiro@jp.fujitsu.com Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org, aarcange@redhat.com, akpm@linux-foundation.org, n-horiguchi@ah.jp.nec.com, kamezawa.hiroyu@jp.fujitsu.com commit bae9c19bf1 (thp: split_huge_page_mm/vma) changed locking behavior of walk_page_range(). Thus this patch changes comment too. Signed-off-by: KOSAKI Motohiro --- mm/pagewalk.c | 3 ++- 1 files changed, 2 insertions(+), 1 deletions(-) diff --git a/mm/pagewalk.c b/mm/pagewalk.c index f792940..2f5cf10 100644 --- a/mm/pagewalk.c +++ b/mm/pagewalk.c @@ -176,7 +176,8 @@ static int walk_hugetlb_range(struct vm_area_struct *vma, * associated range, and a copy of the original mm_walk for access to * the ->private or ->mm fields. * - * No locks are taken, but the bottom level iterator will map PTE + * Usually no locks are taken, but splitting transparent huge page may + * take page table lock. And the bottom level iterator will map PTE * directories from highmem if necessary. * * If any callback returns a non-zero value, the walk is aborted and -- 1.7.3.1 -- 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