From mboxrd@z Thu Jan 1 00:00:00 1970 From: kanoj@google.engr.sgi.com (Kanoj Sarcar) Message-Id: <200001132150.NAA28314@google.engr.sgi.com> Subject: Re: [RFC] 2.3.39 zone balancing Date: Thu, 13 Jan 2000 13:50:53 -0800 (PST) In-Reply-To: from "Alan Cox" at Jan 13, 2000 09:42:49 PM MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org Return-Path: To: Alan Cox Cc: Andrea Arcangeli , Rik van Riel , torvalds@transmeta.com, mingo@chiara.csoma.elte.hu, linux-mm@kvack.org, linux-kernel@vger.rutgers.edu List-ID: > > > doc. If you have a large number of free regular pages, and the dma > > zone is completely exhausted, the 2.2 decision of balacing the dma > > zone might never fetch an "yes" answer, because it is based on total > > number of free pages, not also the per zone free pages. Right? Things > > will get worse the more non-dma pages there are. > > We might not make good choices to free ISA DMA pages, you are correct yes And given a huge enough HIGHMEM zone, we might not make good choices to free regular memory too, right? My patch would fix this problem. I am going to make the patch bigger to fix kswapd too, then put it out in the next few hours. Kanoj > > -- > 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.nl.linux.org/Linux-MM/ > -- 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.nl.linux.org/Linux-MM/