From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail190.messagelabs.com (mail190.messagelabs.com [216.82.249.51]) by kanga.kvack.org (Postfix) with SMTP id 0F3586B01EE for ; Wed, 21 Apr 2010 09:21:18 -0400 (EDT) Message-ID: <4BCEFBAB.4070403@redhat.com> Date: Wed, 21 Apr 2010 09:20:43 -0400 From: Rik van Riel MIME-Version: 1.0 Subject: Re: [RFC PATCH 0/3] Avoid the use of congestion_wait under zone pressure References: <20100322235053.GD9590@csn.ul.ie> <4BA940E7.2030308@redhat.com> <20100324145028.GD2024@csn.ul.ie> <4BCC4B0C.8000602@linux.vnet.ibm.com> <20100419214412.GB5336@cmpxchg.org> <4BCD55DA.2020000@linux.vnet.ibm.com> <20100420153202.GC5336@cmpxchg.org> <4BCDE2F0.3010009@redhat.com> <4BCE7DD1.70900@linux.vnet.ibm.com> In-Reply-To: <4BCE7DD1.70900@linux.vnet.ibm.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org To: Christian Ehrhardt Cc: Johannes Weiner , Mel Gorman , Andrew Morton , linux-mm@kvack.org, Nick Piggin , Chris Mason , Jens Axboe , linux-kernel@vger.kernel.org, gregkh@novell.com, Corrado Zoccolo List-ID: On 04/21/2010 12:23 AM, Christian Ehrhardt wrote: > IMHO it is fine to prevent that nightly backup job from not being > finished when the user arrives at morning because we didn't give him > some more cache How on earth would a backup job benefit from cache? It only accesses each bit of data once, so caching the to-be-backed-up data is a waste of memory. -- 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/ . Don't email: email@kvack.org