From mboxrd@z Thu Jan 1 00:00:00 1970 Date: Thu, 18 Jan 2001 22:54:17 +1100 (EST) From: Rik van Riel Subject: Re: pre2 swap_out() changes In-Reply-To: Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-linux-mm@kvack.org Return-Path: To: Linus Torvalds Cc: Marcelo Tosatti , Zlatko Calusic , linux-mm@kvack.org List-ID: On Fri, 12 Jan 2001, Linus Torvalds wrote: > If the page truly is new (because of some other user), then > page_launder() won't drop it, and it doesn't matter. But > dropping it from the VM means that the list handling can work > right, and that the page will be aged (and thrown out) at the > same rate as other pages. Presuming the page isn't shared between multiple processes. And even then, only the *down* aging will be at the same rate as the other pages. The *up* aging will still be at the rate we scan the virtual memory of the processes. _This_ is one of the main reasons I want to try the reverse page mappings ... the sheer fact that getting the balancing right with the current scheme is hard, if not impossible. regards, Rik -- Virtual memory is like a game you can't win; However, without VM there's truly nothing to lose... http://www.surriel.com/ http://www.conectiva.com/ http://distro.conectiva.com.br/ -- 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/