From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from psmtp.com (na3sys010amx181.postini.com [74.125.245.181]) by kanga.kvack.org (Postfix) with SMTP id 428926B002C for ; Wed, 8 Feb 2012 07:51:13 -0500 (EST) Received: by wibhj13 with SMTP id hj13so446229wib.14 for ; Wed, 08 Feb 2012 04:51:11 -0800 (PST) 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 Content-Type: text/plain; charset=UTF-8 Sender: owner-linux-mm@kvack.org List-ID: To: Mel Gorman Cc: Andrew Morton , Linux-MM , Linux-Netdev , LKML , David Miller , Neil Brown , Peter Zijlstra 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, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Fight unfair telecom internet charges in Canada: sign http://stopthemeter.ca/ Don't email: email@kvack.org