Return-Path: Received: from fieldses.org ([173.255.197.46]:42150 "EHLO fieldses.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757843AbdCURhG (ORCPT ); Tue, 21 Mar 2017 13:37:06 -0400 Date: Tue, 21 Mar 2017 13:37:04 -0400 From: "J. Bruce Fields" To: Jeff Layton Cc: Christoph Hellwig , linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, linux-nfs@vger.kernel.org, linux-ext4@vger.kernel.org, linux-btrfs@vger.kernel.org, linux-xfs@vger.kernel.org Subject: Re: [RFC PATCH v1 00/30] fs: inode->i_version rework and optimization Message-ID: <20170321173704.GA17872@fieldses.org> References: <1482339827-7882-1-git-send-email-jlayton@redhat.com> <20161222084549.GA8833@infradead.org> <1482417724.3924.39.camel@redhat.com> <20170320214327.GA5098@fieldses.org> <20170321134500.GA1318@infradead.org> <20170321163011.GA16666@fieldses.org> <1490117004.2542.1.camel@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii In-Reply-To: <1490117004.2542.1.camel@redhat.com> Sender: linux-nfs-owner@vger.kernel.org List-ID: On Tue, Mar 21, 2017 at 01:23:24PM -0400, Jeff Layton wrote: > On Tue, 2017-03-21 at 12:30 -0400, J. Bruce Fields wrote: > > - NFS doesn't actually require that it increases, but I think it > > should. I assume 64 bits means we don't need a discussion of > > wraparound. > > I thought NFS spec required that you be able to recognize old change > attributes so that they can be discarded. I could be wrong here though. > I'd have to go back and look through the spec to be sure. https://tools.ietf.org/html/rfc7862#section-10 --b.