From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932137AbWDFC4Y (ORCPT ); Wed, 5 Apr 2006 22:56:24 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751348AbWDFC4Y (ORCPT ); Wed, 5 Apr 2006 22:56:24 -0400 Received: from mail01.syd.optusnet.com.au ([211.29.132.182]:57567 "EHLO mail01.syd.optusnet.com.au") by vger.kernel.org with ESMTP id S1751346AbWDFC4X (ORCPT ); Wed, 5 Apr 2006 22:56:23 -0400 From: Con Kolivas To: Andrew Morton Subject: Re: Respin: [PATCH] mm: limit lowmem_reserve Date: Thu, 6 Apr 2006 12:55:54 +1000 User-Agent: KMail/1.9.1 Cc: linux-kernel@vger.kernel.org, ck@vds.kolivas.org, nickpiggin@yahoo.com.au, linux-mm@kvack.org References: <200604021401.13331.kernel@kolivas.org> <200604061129.41658.kernel@kolivas.org> <20060405194344.1915b57a.akpm@osdl.org> In-Reply-To: <20060405194344.1915b57a.akpm@osdl.org> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <200604061255.55055.kernel@kolivas.org> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Thursday 06 April 2006 12:43, Andrew Morton wrote: > Con Kolivas wrote: > > It is possible with a low enough lowmem_reserve ratio to make > > zone_watermark_ok fail repeatedly if the lower_zone is small enough. > > Is that actually a problem? Every single call to get_page_from_freelist will call on zone reclaim. It seems a problem to me if every call to __alloc_pages will do that? Cheers, Con From mboxrd@z Thu Jan 1 00:00:00 1970 From: Con Kolivas Subject: Re: Respin: [PATCH] mm: limit lowmem_reserve Date: Thu, 6 Apr 2006 12:55:54 +1000 References: <200604021401.13331.kernel@kolivas.org> <200604061129.41658.kernel@kolivas.org> <20060405194344.1915b57a.akpm@osdl.org> In-Reply-To: <20060405194344.1915b57a.akpm@osdl.org> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <200604061255.55055.kernel@kolivas.org> Sender: owner-linux-mm@kvack.org Return-Path: To: Andrew Morton Cc: linux-kernel@vger.kernel.org, ck@vds.kolivas.org, nickpiggin@yahoo.com.au, linux-mm@kvack.org List-ID: On Thursday 06 April 2006 12:43, Andrew Morton wrote: > Con Kolivas wrote: > > It is possible with a low enough lowmem_reserve ratio to make > > zone_watermark_ok fail repeatedly if the lower_zone is small enough. > > Is that actually a problem? Every single call to get_page_from_freelist will call on zone reclaim. It seems a problem to me if every call to __alloc_pages will do that? Cheers, Con -- 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