Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758996Ab1CCWh7 (ORCPT ); Thu, 3 Mar 2011 17:37:59 -0500 Received: from smtp1.linux-foundation.org ([140.211.169.13]:37472 "EHLO smtp1.linux-foundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1758618Ab1CCWh5 (ORCPT ); Thu, 3 Mar 2011 17:37:57 -0500 MIME-Version: 1.0 In-Reply-To: <87hbbj96yh.fsf@devron.myhome.or.jp> References: <20110303032454.GI22723@ZenIV.linux.org.uk> <20110303060352.GK22723@ZenIV.linux.org.uk> <87tyfk7x0c.fsf@devron.myhome.or.jp> <87lj0v9984.fsf@devron.myhome.or.jp> <87hbbj96yh.fsf@devron.myhome.or.jp> From: Linus Torvalds Date: Thu, 3 Mar 2011 14:37:36 -0800 Message-ID: Subject: Re: [RFC] st_nlink after rmdir() and rename() To: OGAWA Hirofumi Cc: Al Viro , linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org Content-Type: text/plain; charset=ISO-8859-1 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1394 Lines: 35 On Thu, Mar 3, 2011 at 2:26 PM, OGAWA Hirofumi wrote: > > I don't know much about NFS though, I imaged the NFS just fill the > stat.st_nlink to return to userland by 0 if sillyrenamed dentry? (of > course, I'm not saying let's emulate "i_nlink >= 1" on all > filesystems. just about i_nlink == 0) I was thinking Al is working for > it... So even if we did that, WHAT WOULD BE THE UPSIDE? Code that cares wouldn't run on any other Unix, or on any older version of Linux. And I claim that there is not a single reason to do it anyway. That whole "code that cares" is totally theoretical. Such code simply doesn't exist. If you just opened a directory, and then did a "rmdir()" on that directory, then you're just a f*cking moron if you go around saying "ok, let me now do an fstat() on that fd to see if it really got deleted or not". That's just _stupid_. Really. There is absolutely no point in introducing a new rule that nobody cares about, that we haven't followed ourselves historically, and that would require us to play insane hacky games. WHY DO IT? WHY CARE? WHY, WHY, WHY? Linus -- 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/