From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751663Ab1GONEF (ORCPT ); Fri, 15 Jul 2011 09:04:05 -0400 Received: from mail04-md.ns.itscom.net ([175.177.155.114]:56319 "EHLO mail04-md.ns.itscom.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751529Ab1GONEE (ORCPT ); Fri, 15 Jul 2011 09:04:04 -0400 From: "J. R. Okajima" Subject: Re: [PATCH 0/7] overlay filesystem: request for inclusion To: Miklos Szeredi , Andrew Morton , NeilBrown , viro@ZenIV.linux.org.uk, torvalds@linux-foundation.org, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, apw@canonical.com, nbd@openwrt.org, hramrach@centrum.cz, jordipujolp@gmail.com, ezk@fsl.cs.sunysb.edu In-Reply-To: <12864.1310734928@jrobl> References: <1306932380-10280-1-git-send-email-miklos@szeredi.hu> <20110608153208.dc705cda.akpm@linux-foundation.org> <20110609115934.3c53f78f@notabene.brown> <20110608205233.ebfedc4d.akpm@linux-foundation.org> <87wrgvb28a.fsf@tucsk.pomaz.szeredi.hu> <20110609123843.77153b27.akpm@linux-foundation.org> <877h8uzmsi.fsf@tucsk.pomaz.szeredi.hu> <21324.1307677721@jrobl> <871uyxa7ol.fsf@tucsk.pomaz.szeredi.hu> <8739ig3k93.fsf@tucsk.pomaz.szeredi.hu> <8536.1310214135@jrobl> <87k4bjd8pc.fsf@tucsk.pomaz.szeredi.hu> <12864.1310734928@jrobl> Date: Fri, 15 Jul 2011 22:04:00 +0900 Message-ID: <12880.1310735040@jrobl> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org > > st_nlink==1 for directories is widely accepted way of saying that the > > number of subdirectories is unknown. Various filesystems already do > > this, and versions of GNU utils that I have come across accept it. > > When the upperdir is tmpfs, the link count of the directories in it will > not be 1, won't it? Ah, I've found overlayfs sets it to 1 now. Thanks J. R. Okajima