Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757317AbXHEPCZ (ORCPT ); Sun, 5 Aug 2007 11:02:25 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752621AbXHEPCN (ORCPT ); Sun, 5 Aug 2007 11:02:13 -0400 Received: from relay.2ka.mipt.ru ([194.85.82.65]:44771 "EHLO 2ka.mipt.ru" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753364AbXHEPCL (ORCPT ); Sun, 5 Aug 2007 11:02:11 -0400 Date: Sun, 5 Aug 2007 19:01:55 +0400 From: Evgeniy Polyakov To: Daniel Phillips Cc: netdev@vger.kernel.org, linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org Subject: Re: Distributed storage. Message-ID: <20070805150154.GA32132@2ka.mipt.ru> References: <20070731171347.GA14267@2ka.mipt.ru> <200708031741.18404.phillips@phunq.net> <20070804164438.GC14175@2ka.mipt.ru> <200708050106.58383.phillips@phunq.net> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <200708050106.58383.phillips@phunq.net> User-Agent: Mutt/1.5.9i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 741 Lines: 18 On Sun, Aug 05, 2007 at 01:06:58AM -0700, Daniel Phillips (phillips@phunq.net) wrote: > > DST original code worked as device mapper plugin too, but its two > > additional allocations (io and clone) per block request ended up for > > me as a show stopper. > > Ah, sorry, I misread. A show stopper in terms of efficiency, or in > terms of deadlock? At least as in terms of efficiency. Device mapper lives in happy world where memory does not end and allocations are fast. -- Evgeniy Polyakov - 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/