From: Holger =?iso-8859-1?q?Hoffst=E4tte?= Subject: Space Maps? Date: Mon, 24 Nov 2014 12:43:51 +0000 (UTC) Message-ID: Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit To: linux-ext4@vger.kernel.org Return-path: Received: from plane.gmane.org ([80.91.229.3]:54951 "EHLO plane.gmane.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752483AbaKXMoG (ORCPT ); Mon, 24 Nov 2014 07:44:06 -0500 Received: from list by plane.gmane.org with local (Exim 4.69) (envelope-from ) id 1Xsszr-0003mq-JX for linux-ext4@vger.kernel.org; Mon, 24 Nov 2014 13:44:03 +0100 Received: from p4ff580e3.dip0.t-ipconnect.de ([79.245.128.227]) by main.gmane.org with esmtp (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Mon, 24 Nov 2014 13:44:03 +0100 Received: from holger.hoffstaette by p4ff580e3.dip0.t-ipconnect.de with local (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Mon, 24 Nov 2014 13:44:03 +0100 Sender: linux-ext4-owner@vger.kernel.org List-ID: Cleaning out some old research papers I came again across the proposal for "space maps" in ext4 [1]. What happened to that? Was it rejected due to too much risk or other technical reasons? The benefits sound appealing, so I was wondering if there's something fundamentally wrong with the suggested approach. Holger [1] https://www.kernel.org/doc/ols/2010/ols2010-pages-121-132.pdf