From mboxrd@z Thu Jan 1 00:00:00 1970 Message-ID: <20040205051905.19684.qmail@web9704.mail.yahoo.com> Date: Wed, 4 Feb 2004 21:19:05 -0800 (PST) From: Alok Mooley Subject: Re: Active Memory Defragmentation: Our implementation & problems In-Reply-To: <1075924593.27981.458.camel@nighthawk> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Sender: owner-linux-mm@kvack.org Return-Path: To: Dave Hansen Cc: linux-kernel , linux-mm List-ID: --- Dave Hansen wrote: > On Wed, 2004-02-04 at 10:54, Alok Mooley wrote: > > --- Dave Hansen wrote: > Depending on the quantity of work that you're trying > to do at once, this > might be unavoidable. > > I know it's a difficult thing to think about, but I > still don't > understand the precise cases that you're concerned > about. Page faults > to me seem like the least of your problems. A > bigger issue would be if > the page is written to by userspace after you copy, > but before you > install the new pte. Did I miss the code in your > patch that invalidated > the old tlb entries? This is a non issue for us right now, since we update the ptes in a lock, & so no one can access it before it is completely updated. Yes, we invalidate the old tlb entries as well as the cache entries as reqd. on some other architectures. -Alok __________________________________ Do you Yahoo!? Yahoo! Finance: Get your refund fast by filing online. http://taxes.yahoo.com/filing.html -- 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