Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932147Ab2BHMvO (ORCPT ); Wed, 8 Feb 2012 07:51:14 -0500 Received: from mail-ww0-f44.google.com ([74.125.82.44]:41697 "EHLO mail-ww0-f44.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932104Ab2BHMvN (ORCPT ); Wed, 8 Feb 2012 07:51:13 -0500 MIME-Version: 1.0 In-Reply-To: <20120207132745.GH5938@suse.de> References: <1328568978-17553-1-git-send-email-mgorman@suse.de> <20120207132745.GH5938@suse.de> Date: Wed, 8 Feb 2012 20:51:11 +0800 Message-ID: Subject: Re: [PATCH 00/15] Swap-over-NBD without deadlocking V8 From: Hillf Danton To: Mel Gorman Cc: Andrew Morton , Linux-MM , Linux-Netdev , LKML , David Miller , Neil Brown , Peter Zijlstra Content-Type: text/plain; charset=UTF-8 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 910 Lines: 24 On Tue, Feb 7, 2012 at 9:27 PM, Mel Gorman wrote: > On Tue, Feb 07, 2012 at 08:45:18PM +0800, Hillf Danton wrote: >> If it is feasible to bypass hang by tuning min_mem_kbytes, > > No. Increasing or descreasing min_free_kbytes changes the timing but it > will still hang. > >> things may >> become simpler if NICs are also tagged. > > That would mean making changes to every driver and they do not necessarily > know what higher level protocol like TCP they are transmitting. How is > that simpler? What is the benefit? > The benefit is to avoid allocating sock buffer in softirq by recycling, then the changes in VM core maybe less. Thanks Hillf -- 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/