Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S934075AbXIKUCt (ORCPT ); Tue, 11 Sep 2007 16:02:49 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S933753AbXIKUBu (ORCPT ); Tue, 11 Sep 2007 16:01:50 -0400 Received: from mx1.redhat.com ([66.187.233.31]:37472 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933515AbXIKUBs (ORCPT ); Tue, 11 Sep 2007 16:01:48 -0400 Message-Id: <20070911195350.825778000@chello.nl> User-Agent: quilt/0.45-1 Date: Tue, 11 Sep 2007 21:53:50 +0200 From: Peter Zijlstra To: linux-mm@kvack.org, linux-kernel@vger.kernel.org Cc: miklos@szeredi.hu, akpm@linux-foundation.org, neilb@suse.de, dgc@sgi.com, tomoki.sekiyama.qu@hitachi.com, a.p.zijlstra@chello.nl, nikita@clusterfs.com, trond.myklebust@fys.uio.no, yingchao.zhou@gmail.com, richard@rsk.demon.co.uk, torvalds@linux-foundation.org Subject: [PATCH 00/23] per device dirty throttling -v10 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1275 Lines: 37 Per device dirty throttling patches These patches aim to improve balance_dirty_pages() and directly address three issues: 1) inter device starvation 2) stacked device deadlocks 3) inter process starvation 1 and 2 are a direct result from removing the global dirty limit and using per device dirty limits. By giving each device its own dirty limit is will no longer starve another device, and the cyclic dependancy on the dirty limit is broken. In order to efficiently distribute the dirty limit across the independant devices a floating proportion is used, this will allocate a share of the total limit proportional to the device's recent activity. 3 is done by also scaling the dirty limit proportional to the current task's recent dirty rate. Changes since -v9: - cleaned up the perpcu_counter_init code - little fixups - fwd port to .23-rc4-mm1 Changes since -v8: - cleanup of the proportion code - fix percpu_counter_add(&counter, -(unsigned long)) - fix per task dirty rate code - fwd port to .23-rc2-mm2 - 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/