From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from bombadil.infradead.org ([198.137.202.9]:34871 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1758761AbcHDQA3 (ORCPT ); Thu, 4 Aug 2016 12:00:29 -0400 Date: Thu, 4 Aug 2016 09:00:07 -0700 From: Christoph Hellwig To: Dave Chinner Cc: Christoph Hellwig , "Darrick J. Wong" , linux-fsdevel@vger.kernel.org, vishal.l.verma@intel.com, bfoster@redhat.com, xfs@oss.sgi.com Subject: Re: [PATCH 11/47] xfs: move deferred operations into a separate file Message-ID: <20160804160007.GA7649@infradead.org> References: <146907695530.25461.3225785294902719773.stgit@birch.djwong.org> <146907703710.25461.16650495404061662831.stgit@birch.djwong.org> <20160801080223.GB30547@infradead.org> <20160802223950.GN16044@dastard> <20160803091627.GA5289@infradead.org> <20160803225756.GW16044@dastard> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20160803225756.GW16044@dastard> Sender: linux-fsdevel-owner@vger.kernel.org List-ID: On Thu, Aug 04, 2016 at 08:57:56AM +1000, Dave Chinner wrote: > So, please explain in more detail what the problem is and what the > proposed solution is so I (and probably Darrick, too) have some > understanding of the issue you see with this code. We were doing 1 (actually 2 with the busy extent tracking) allocations for each free extent, and now we're up to three. We need to get this down to 1 and not increase it for no benefit.