Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1759038AbXHNLgL (ORCPT ); Tue, 14 Aug 2007 07:36:11 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1754823AbXHNLft (ORCPT ); Tue, 14 Aug 2007 07:35:49 -0400 Received: from phunq.net ([64.81.85.152]:40606 "EHLO moonbase.phunq.net" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1752592AbXHNLfr (ORCPT ); Tue, 14 Aug 2007 07:35:47 -0400 From: Daniel Phillips To: Evgeniy Polyakov Subject: Re: Block device throttling [Re: Distributed storage.] Date: Tue, 14 Aug 2007 04:35:43 -0700 User-Agent: KMail/1.9.5 Cc: Jens Axboe , netdev@vger.kernel.org, linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org, Peter Zijlstra References: <20070731171347.GA14267@2ka.mipt.ru> <200708140413.12530.phillips@phunq.net> <20070814113039.GA20780@2ka.mipt.ru> In-Reply-To: <20070814113039.GA20780@2ka.mipt.ru> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <200708140435.44979.phillips@phunq.net> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 674 Lines: 16 On Tuesday 14 August 2007 04:30, Evgeniy Polyakov wrote: > > And it will not solve the deadlock problem in general. (Maybe it > > works for your virtual device, but I wonder...) If the virtual > > device allocates memory during generic_make_request then the memory > > needs to be throttled. > > Daniel, if device process bio by itself, it has a limit and thus it > will wait in generic_make_request() What will make it wait? - 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/