From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from relay.sgi.com (relay1.corp.sgi.com [137.38.102.111]) by oss.sgi.com (Postfix) with ESMTP id 616EB7F3F for ; Tue, 11 Mar 2014 11:48:25 -0500 (CDT) Received: from cuda.sgi.com (cuda3.sgi.com [192.48.176.15]) by relay1.corp.sgi.com (Postfix) with ESMTP id 56DE88F807A for ; Tue, 11 Mar 2014 09:48:22 -0700 (PDT) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.9]) by cuda.sgi.com with ESMTP id WyL0D1yb6wrx3YwT (version=TLSv1 cipher=AES256-SHA bits=256 verify=NO) for ; Tue, 11 Mar 2014 09:48:20 -0700 (PDT) Date: Tue, 11 Mar 2014 09:48:16 -0700 From: Christoph Hellwig Subject: Re: Multi-CPU harmless lockdep on x86 while copying data Message-ID: <20140311164816.GA15676@infradead.org> References: <531BD8B9.1090400@gmail.com> <20140310025523.GV6851@dastard> <20140310103716.GA1431@infradead.org> <20140310111253.GA4801@infradead.org> <20140310205118.GX6851@dastard> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20140310205118.GX6851@dastard> List-Id: XFS Filesystem from SGI List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: xfs-bounces@oss.sgi.com Sender: xfs-bounces@oss.sgi.com To: Dave Chinner Cc: "Michael L. Semon" , xfs-oss On Tue, Mar 11, 2014 at 07:51:18AM +1100, Dave Chinner wrote: > Yeah, b) seems like the way to simplify it - the filestreams code > really only needs to track the parent/ag relationship rather than > the child/parent relationship if there is a reliable way of > determining the parent from the child. > > What do we do with hardlinked files in this case? I'm happy to say > "too bad" for these files mainly because the filestream allocator is > aimed at associating multiple file creations together, so hard links > really don't matter AFAICT... We could flatly refuse filesystems for files with i_nlink > 1, or just grab the first parent we get at. Refusing seems like the better alternative to me. _______________________________________________ xfs mailing list xfs@oss.sgi.com http://oss.sgi.com/mailman/listinfo/xfs