From mboxrd@z Thu Jan 1 00:00:00 1970 Date: Thu, 10 Apr 2003 14:02:11 -0700 From: William Lee Irwin III Subject: Re: [PATCH] bootmem speedup from the IA64 tree Message-ID: <20030410210211.GI1828@holomorphy.com> References: <20030410122421.A17889@lst.de> <20030410095930.D9136@redhat.com> <20030410134334.37c86863.akpm@digeo.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20030410134334.37c86863.akpm@digeo.com> Sender: owner-linux-mm@kvack.org Return-Path: To: Andrew Morton Cc: Benjamin LaHaise , hch@lst.de, davidm@napali.hpl.hp.com, linux-mm@kvack.org, "Martin J. Bligh" List-ID: On Thu, Apr 10, 2003 at 01:43:34PM -0700, Andrew Morton wrote: > Agreed. I've updated the patch thusly. > Bootmem igornamus says: > Do we have a problem with using an `unsigned long' byte address in there on > ia32 PAE? Or are we guaranteed that this will only ever be used in the lower > 4G of physical memory? It's only ever used for lowmem on ia32, which is even below 1GB. On Thu, Apr 10, 2003 at 01:43:34PM -0700, Andrew Morton wrote: > Does the last_success cache ever need to be updated if someone frees some > previously-allocated memory? Setting preferred only puts a finger on where to begin a search. The search (and validity checking) are still carried out as usual. It could be suboptimal to set it to somewhere that's not as good as possible after a free, but it's only advice as to where to start a search and so doesn't affect correctness so long as it's in-bounds. I'm just going to grab a barfbag and run now. -- wli -- 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: aart@kvack.org