Return-Path: linux-nfs-owner@vger.kernel.org Received: from fieldses.org ([174.143.236.118]:57882 "EHLO fieldses.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752582AbaGJQU2 (ORCPT ); Thu, 10 Jul 2014 12:20:28 -0400 Date: Thu, 10 Jul 2014 12:20:19 -0400 From: "J. Bruce Fields" To: Jeff Layton Cc: Christoph Hellwig , linux-nfs@vger.kernel.org Subject: Re: [PATCH v4 015/100] nfsd: clean up reset_union_bmap_deny Message-ID: <20140710162019.GG26851@fieldses.org> References: <1404842668-22521-1-git-send-email-jlayton@primarydata.com> <1404842668-22521-16-git-send-email-jlayton@primarydata.com> <20140710103100.GA6935@infradead.org> <20140710081912.4af7c35b@tlielax.poochiereds.net> <20140710131650.GA6806@infradead.org> <20140710092101.28558ab4@tlielax.poochiereds.net> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii In-Reply-To: <20140710092101.28558ab4@tlielax.poochiereds.net> Sender: linux-nfs-owner@vger.kernel.org List-ID: On Thu, Jul 10, 2014 at 09:21:01AM -0400, Jeff Layton wrote: > On Thu, 10 Jul 2014 06:16:50 -0700 > Christoph Hellwig wrote: > > > Ok, feel free do drop my comments re the access/deny bitmap. I don't > > really think this is worth it to avoid the small false positive to > > allow downgrading if a different open owner had a r/o or w/o open, but > > it's probably indeed way to much churn for this series to do anything > > about it. > > > > Ok, thanks. > > I agree that having to track this is a little ridiculous. No real client > really cares about that, but there are some pynfs tests that will fail > if we remove it altogether. I broke it a couple of years ago and Bruce > dinged me on it, so I'm inclined not to change it here. Looking back at the spec again, that server behavior is a SHOULD, but I'm not sure why. I suppose it's just an attempt to keep clients to the stricter behavior in case some other server implementation requires it. It seems like a low priority, so if it makes your life easier, we can ditch it. --b.