Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752135AbbEZGsj (ORCPT ); Tue, 26 May 2015 02:48:39 -0400 Received: from mx1.redhat.com ([209.132.183.28]:56481 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751486AbbEZGsf (ORCPT ); Tue, 26 May 2015 02:48:35 -0400 Message-ID: <5563F5C8.2040806@redhat.com> Date: Tue, 26 May 2015 00:25:44 -0400 From: Rik van Riel User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Thunderbird/31.4.0 MIME-Version: 1.0 To: Daniel Phillips , David Lang CC: Jan Kara , linux-fsdevel@vger.kernel.org, tux3@tux3.org, linux-kernel@vger.kernel.org, OGAWA Hirofumi Subject: Re: [FYI] tux3: Core changes References: <8f886f13-6550-4322-95be-93244ae61045@phunq.net> <55545C2F.8040207@phunq.net> <20150519140045.GA16313@quack.suse.cz> <555B8C79.4090909@phunq.net> <20150520144429.GA17783@quack.suse.cz> <555CB4B6.8050305@phunq.net> <555CE62C.5030202@redhat.com> <555D0FDF.3070303@phunq.net> <555D500B.4080901@phunq.net> <13c8bcdf-70e8-43d5-a05f-58ad839dbfd0@phunq.net> In-Reply-To: <13c8bcdf-70e8-43d5-a05f-58ad839dbfd0@phunq.net> Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 892 Lines: 23 On 05/21/2015 03:53 PM, Daniel Phillips wrote: > On Wednesday, May 20, 2015 8:51:46 PM PDT, David Lang wrote: >> how do you prevent it from continuing to interact with the old version >> of the page and never see updates or have it's changes reflected on >> the current page? > > Why would it do that, and what would be surprising about it? Did > you have a specific case in mind? After a get_page(), page_cache_get(), or other equivalent function, a piece of code has the expectation that it can continue using that page until after it has released the reference count. This can be an arbitrarily long period of time. -- All rights reversed -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/