From mboxrd@z Thu Jan 1 00:00:00 1970 Date: Thu, 8 Jun 2000 22:29:50 +0100 From: "Stephen C. Tweedie" Subject: Re: journaling & VM Message-ID: <20000608222950.Z3886@redhat.com> References: <393DA31A.358AE46D@reiser.to> <20000607121243.F29432@redhat.com> <20000607181144.U30951@redhat.com> <20000608114435.A15433@uni-koblenz.de> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20000608114435.A15433@uni-koblenz.de>; from ralf@uni-koblenz.de on Thu, Jun 08, 2000 at 11:44:35AM +0200 Sender: owner-linux-mm@kvack.org Return-Path: To: Ralf Baechle , linux-mm@kvack.org Cc: "Stephen C. Tweedie" List-ID: Hi, On Thu, Jun 08, 2000 at 11:44:35AM +0200, Ralf Baechle wrote: > On Wed, Jun 07, 2000 at 06:11:44PM +0100, Stephen C. Tweedie wrote: > > > Because you want to have some idea of the usage patterns of the > > pages, too, so that you can free pages which haven't been accessed > > recently regardless of who owns them. > > some device drivers may also collect relativly large amounts of memory. > In case of my HIPPI cards this may be in the range of megabytes. So I'd > like to see a hook for freeing device memory. Rik, here's yet another item for the wishlist on your new VM. :) Device drivers really are a special case because they typically need their memory at short notice, and at awkward times (such as in the middle of interrupts). What sort of flexibility do you have regarding the allocation/release of the buffer pull in your driver? Cheers, Stephen -- 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/