From mboxrd@z Thu Jan 1 00:00:00 1970 Date: Sat, 16 Sep 2000 21:20:57 -0300 (BRST) From: Rik van Riel Subject: [PATCH] update to new VM Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-linux-mm@kvack.org Return-Path: To: linux-mm@kvack.org Cc: linux-kernel@vger.redhat.com, Linus Torvalds List-ID: Hi Linus, after increasing the test base, the following 2 problems have been noticed with the VM patch, and are (hopefully) fixed in this patch: 1) if __alloc_pages() is called without __GFP_IO in the gfp_mask, we cannot wait for kswapd -> use try_to_free_pages() the oldfashioned way instead 1b) while fixing up the other __GFP_IO problems, I noticed programs at schedule points in the VM, sleeping in S state, this is fixed by explicitly making them runnable 2) the VM was badly balanced for low-memory (8MB) machines, this has been fixed by making it easier for kswapd to go to sleep in refill_inactive() and by waking up kswapd earlier at the top of __alloc_pages() I'm still not 100% sure if this patch is completely correct, but it fixes one serious bug in the current VM inside -test9-pre1 and I'm leaving for Linux Kongress tomorrow so this is my last chance to post anything for the next few days ;( If this patch proves stable for everyone and makes 8MB machines workable again with the new VM, please include this in the next pre-patch. If it doesn't work correctly, I'll somehow find it in my email while at Linux Kongress and I'll prepare a new fix. 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/