From mboxrd@z Thu Jan 1 00:00:00 1970 From: Andi Kleen Subject: Re: [PATCH]: Adding a counter in vma to indicate the number =?iso-8859-15?q?of=09physical_pages_backing?= it Date: Tue, 13 Jun 2006 19:31:36 +0200 References: <1149903235.31417.84.camel@galaxy.corp.google.com> <200606130551.23825.ak@suse.de> <1150217948.9576.67.camel@galaxy.corp.google.com> In-Reply-To: <1150217948.9576.67.camel@galaxy.corp.google.com> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-15" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <200606131931.36165.ak@suse.de> Sender: owner-linux-mm@kvack.org Return-Path: To: rohitseth@google.com Cc: Nick Piggin , Andrew Morton , Linux-mm@kvack.org, Linux-kernel@vger.kernel.org List-ID: > This information is for user land applications to have the knowledge of > which virtual ranges are getting actively used and which are not. If you think the kernel needs better information on that wouldn't it be better to use the page accessed bits of the hardware more aggressively? Before giving up and adding hacks like you're proposing it would be better to explore fully automatic mechanisms fully. -Andi -- 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: email@kvack.org