From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail138.messagelabs.com (mail138.messagelabs.com [216.82.249.35]) by kanga.kvack.org (Postfix) with ESMTP id 1EFD16B004D for ; Tue, 7 Jul 2009 22:22:53 -0400 (EDT) Date: Tue, 7 Jul 2009 19:27:45 -0700 (PDT) From: Linus Torvalds Subject: Re: [RFC][PATCH 3/4] get_user_pages READ fault handling special cases In-Reply-To: <20090708103807.ae17396a.kamezawa.hiroyu@jp.fujitsu.com> Message-ID: References: <20090707165101.8c14b5ac.kamezawa.hiroyu@jp.fujitsu.com> <20090707165950.7a84145a.kamezawa.hiroyu@jp.fujitsu.com> <20090708090344.aa54a008.kamezawa.hiroyu@jp.fujitsu.com> <20090708103807.ae17396a.kamezawa.hiroyu@jp.fujitsu.com> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-linux-mm@kvack.org To: KAMEZAWA Hiroyuki Cc: "linux-mm@kvack.org" , npiggin@suse.de, "hugh.dickins@tiscali.co.uk" , avi@redhat.com, "akpm@linux-foundation.org" List-ID: On Wed, 8 Jul 2009, KAMEZAWA Hiroyuki wrote: > > Is there a special reason to have to account zero page as file_rss ? > If not, pte_special() solution works well. (I think not necessary..) I would suggest _not_ accounting the zero page. After all, it doesn't actually use any memory. Linus -- 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/ . Don't email: email@kvack.org