From mboxrd@z Thu Jan 1 00:00:00 1970 Date: Mon, 2 Oct 2000 16:59:57 -0300 (BRST) From: Rik van Riel Subject: Re: [highmem bug report against -test5 and -test6] Re: [PATCH] Re: simple FS application that hangs 2.4-test5, mem mgmt problem or FS buffer cache mgmt problem? (fwd) In-Reply-To: <20001002215628.D21473@athlon.random> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-linux-mm@kvack.org Return-Path: To: Andrea Arcangeli Cc: Ingo Molnar , linux-mm@kvack.org, Linus Torvalds , "Stephen C. Tweedie" List-ID: On Mon, 2 Oct 2000, Andrea Arcangeli wrote: > On Mon, Oct 02, 2000 at 04:35:43PM -0300, Rik van Riel wrote: > > because we keep the buffer heads on active pages in memory... > > A page can be the most active and the VM and never need bh on it > after the first pagein. Keeping the bh on it means wasting tons > of memory for no good reason. Indeed. On the other hand, maybe we /will/ need the buffer head again soon? Linus, I remember you saying some time ago that you would like to keep the buffer heads on a page around so we'd have them at the point where we need to swap out again. Is this still your position or should I make some code to strip the buffer heads of clean, active pages ? regards, Rik -- "What you're running that piece of shit Gnome?!?!" -- Miguel de Icaza, UKUUG 2000 http://www.conectiva.com/ http://www.surriel.com/ -- 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.eu.org/Linux-MM/